Amplitude shift keying (ask).pptx
•Download as PPTX, PDF•
1 like•494 views
Digital data is represented as variations in the amplitude of a carrier wave in amplitude-shift keying (ASK), a type of modulation. In an ASK system, a symbol, representing one or more bits, is sent by transmitting a fixed-amplitude carrier wave at a fixed frequency for a specific time duration. A simple form of ASK modulation is considered that amplitude modulates a carrier based on a direct mapping of the source data bits to the waveform symbol. The most rudimentary form of ASK is given the special name On–Off Keying (OOK) modulation.
Report
Share
Report
Share
Recommended
Amplitude shift keying (ask)
Amplitude Shift Keying (ASK) is a modulation technique where the amplitude of a carrier signal is varied according to the amplitude levels of a digital signal. In ASK, a digital signal of 1s and 0s is multiplied with a carrier signal, with a 1 having no effect on the carrier signal but a 0 reducing the carrier signal amplitude to zero. ASK has high efficiency and low noise interference but also high bandwidth and power consumption, making it suitable for applications like satellite links.
Amplitude shift keying
Amplitude shift keying (ASK) is a digital modulation technique that represents binary data by changing the amplitude of a carrier wave. In binary ASK (BASK), also known as on-off keying (OOK), a high amplitude represents a binary 1 and a low or off amplitude represents a binary 0. The demodulator determines the amplitude of the received signal to recover the original data. ASK transmitters and receivers have a simple design but the transmission is susceptible to noise. ASK is used in early telephone modems and transmitting digital data over optical fibers.
Modulation
This ppt is a detailed description of modulation. It covers almost everything of amplitude modulation.
Modulation techniques
This document discusses various digital modulation techniques including:
- Amplitude Shift Keying (ASK) which represents data as changes in signal amplitude.
- Frequency Shift Keying (FSK) which represents data as changes in carrier frequency.
- Phase Shift Keying (PSK) which represents data as changes in the phase of the carrier signal.
- Minimum Shift Keying (MSK) and Gaussian Minimum Shift Keying (GMSK) which are continuous phase modulation schemes used in wireless communications for their spectral efficiency.
- Quadrature Amplitude Modulation (QAM) which combines ASK and PSK to send multiple bits per symbol.
Amplitude Modulation ppt
This document discusses amplitude modulation (AM) as a type of modulation used to transmit information signals. Modulation involves varying a high frequency carrier signal by an information signal in order to transmit the information signal over long distances. In AM, the amplitude of the carrier signal is varied in accordance with the instantaneous amplitude of the modulating or information signal. This creates two new sideband frequencies above and below the carrier frequency equal to the modulation frequency. The carrier and sidebands together make up the modulated signal. Only a portion of the transmitted power is present in the sidebands containing the information, while the rest is wasted in the carrier.
Frequency Modulation
This document discusses frequency modulation (FM) and its types: phase modulation and frequency modulation. It describes the key characteristics of FM including its constant amplitude, higher signal-to-noise ratio, and infinite bandwidth. FM is classified as narrowband FM (NBFM) or wideband FM (WBFM) based on the modulation index. The document also covers pre-emphasis and de-emphasis circuits, methods for generating NBFM and WBFM signals including the direct and indirect (Armstrong's) methods.
Digital Modulation Techniques ppt
The most fundamental digital modulation techniques are based on keying: PSK (phase-shift keying): a finite number of phases are used. FSK (frequency-shift keying): a finite number of frequencies are used. ... QAM (quadrature amplitude modulation): a finite number of at least two phases and at least two amplitudes are used.
ASk,FSK,PSK
1. Digital modulation techniques are used to modulate digital information so that it can be transmitted via different mediums. Common digital modulation methods include binary amplitude shift keying (ASK), frequency shift keying (FSK), and phase shift keying (PSK).
2. FSK conveys information by changing the instantaneous frequency of a carrier wave. It is less susceptible to errors than ASK but has a larger spectrum bandwidth. PSK varies the phase of the transmitted signal. BPSK uses two phases while QPSK uses four phases.
3. The performance of digital modulation techniques can be compared using the energy per bit to noise power spectral density ratio (Eb/N0). Lower Eb/N0 values
Recommended
Amplitude shift keying (ask)
Amplitude Shift Keying (ASK) is a modulation technique where the amplitude of a carrier signal is varied according to the amplitude levels of a digital signal. In ASK, a digital signal of 1s and 0s is multiplied with a carrier signal, with a 1 having no effect on the carrier signal but a 0 reducing the carrier signal amplitude to zero. ASK has high efficiency and low noise interference but also high bandwidth and power consumption, making it suitable for applications like satellite links.
Amplitude shift keying
Amplitude shift keying (ASK) is a digital modulation technique that represents binary data by changing the amplitude of a carrier wave. In binary ASK (BASK), also known as on-off keying (OOK), a high amplitude represents a binary 1 and a low or off amplitude represents a binary 0. The demodulator determines the amplitude of the received signal to recover the original data. ASK transmitters and receivers have a simple design but the transmission is susceptible to noise. ASK is used in early telephone modems and transmitting digital data over optical fibers.
Modulation
This ppt is a detailed description of modulation. It covers almost everything of amplitude modulation.
Modulation techniques
This document discusses various digital modulation techniques including:
- Amplitude Shift Keying (ASK) which represents data as changes in signal amplitude.
- Frequency Shift Keying (FSK) which represents data as changes in carrier frequency.
- Phase Shift Keying (PSK) which represents data as changes in the phase of the carrier signal.
- Minimum Shift Keying (MSK) and Gaussian Minimum Shift Keying (GMSK) which are continuous phase modulation schemes used in wireless communications for their spectral efficiency.
- Quadrature Amplitude Modulation (QAM) which combines ASK and PSK to send multiple bits per symbol.
Amplitude Modulation ppt
This document discusses amplitude modulation (AM) as a type of modulation used to transmit information signals. Modulation involves varying a high frequency carrier signal by an information signal in order to transmit the information signal over long distances. In AM, the amplitude of the carrier signal is varied in accordance with the instantaneous amplitude of the modulating or information signal. This creates two new sideband frequencies above and below the carrier frequency equal to the modulation frequency. The carrier and sidebands together make up the modulated signal. Only a portion of the transmitted power is present in the sidebands containing the information, while the rest is wasted in the carrier.
Frequency Modulation
This document discusses frequency modulation (FM) and its types: phase modulation and frequency modulation. It describes the key characteristics of FM including its constant amplitude, higher signal-to-noise ratio, and infinite bandwidth. FM is classified as narrowband FM (NBFM) or wideband FM (WBFM) based on the modulation index. The document also covers pre-emphasis and de-emphasis circuits, methods for generating NBFM and WBFM signals including the direct and indirect (Armstrong's) methods.
Digital Modulation Techniques ppt
The most fundamental digital modulation techniques are based on keying: PSK (phase-shift keying): a finite number of phases are used. FSK (frequency-shift keying): a finite number of frequencies are used. ... QAM (quadrature amplitude modulation): a finite number of at least two phases and at least two amplitudes are used.
ASk,FSK,PSK
1. Digital modulation techniques are used to modulate digital information so that it can be transmitted via different mediums. Common digital modulation methods include binary amplitude shift keying (ASK), frequency shift keying (FSK), and phase shift keying (PSK).
2. FSK conveys information by changing the instantaneous frequency of a carrier wave. It is less susceptible to errors than ASK but has a larger spectrum bandwidth. PSK varies the phase of the transmitted signal. BPSK uses two phases while QPSK uses four phases.
3. The performance of digital modulation techniques can be compared using the energy per bit to noise power spectral density ratio (Eb/N0). Lower Eb/N0 values
Digital modulation techniques...
This document discusses various digital modulation techniques. It begins by defining modulation as adding information to a carrier signal. It then distinguishes between analog and digital modulation. Digital modulation modulates an analog carrier signal with a discrete signal, and can be considered as converting digital-to-analog and vice versa. Some key digital modulation techniques discussed include amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK), quadrature amplitude modulation (QAM), and differential phase shift keying (DPSK). Metrics for comparing digital modulation techniques include power efficiency, bandwidth efficiency, and implementation cost-effectiveness.
Digital communication system
The document discusses digital communication systems. It provides examples of digital communication including an email sent to invite team members to a meeting. It then explains the key building blocks of a digital communication system including the input source, source encoder, channel encoder, digital modulator, channel, digital demodulator, channel decoder, source decoder and output transducer. The document also discusses channels used for digital communication, causes of signal loss, and comparisons between digital and analog communication systems.
Lecture6 modulation
Modulation involves combining a carrier signal with a message signal for transmission. There are three main types of analog modulation: frequency modulation, phase modulation, and amplitude modulation. Frequency modulation varies the carrier frequency based on the message signal frequency. It has good noise resistance but requires more complex receivers. Phase modulation varies the carrier phase based on the message signal amplitude. It has less interference but can cause phase ambiguity. Amplitude modulation varies the carrier amplitude based on the message signal, requiring simple circuits but more power. Each type has advantages and disadvantages for different applications in radio, recording, and telecommunications.
Chapter 4
This document provides an overview of amplitude (linear) modulation techniques. It defines key concepts like modulation, baseband communication, and carrier communication. It then describes various amplitude modulation schemes including AM, DSB-SC, QAM, SSB, and VSB. Implementation and demodulation of these techniques is discussed. The document also covers frequency mixing, superheterodyne receivers, frequency division multiplexing, and carrier acquisition using phase-locked loops. Suggested problems are provided at the end.
Phase modulation
Phase modulation (PM) is a form of modulation where information is represented by variations in the instantaneous phase of a carrier wave. The phase angle of the complex envelope is changed in direct proportion to the message signal. PM can be considered a special case of FM where the carrier frequency modulation is given by the time derivative of the phase modulation. The bandwidth of PM for a single sinusoidal signal is approximately equal to the modulation index multiplied by the carrier frequency.
Amplitude modulation & demodulation
This document discusses amplitude modulation and demodulation. It defines amplitude modulation as varying the amplitude of a carrier wave linearly with a message signal while keeping frequency and phase constant. Modulation is used to transmit signals over long distances and allow multiple signals over the same channel. Demodulation recovers the signal intelligence by reversing the modulation process through rectification and filtering. The document describes amplitude modulation and different types of AM demodulation techniques.
Frequency modulation
Frequency modulation was invented by Edwin Howard Armstrong in 1890 and comes in two types: narrow band FM and wide band FM. It works by varying the frequency of the carrier signal based on the modulating signal. FM has advantages like being resilient to noise and signal strength variations while not requiring linear amplifiers, and it allows for greater transmission efficiency than some other modulation modes. However, it requires a more complex demodulator and has lower data spectral efficiency than some other modes since its sidebands extend to infinity. Narrow band FM has a modulation index of less than 1 and a maximum modulating frequency of 3kHz with a maximum frequency deviation of 75kHz.
M ary psk modulation
M- Ary PSK Modulation Technique , make it easier to understand this type of modulation technique which is usually used in communication system
Demodulation of AM wave
AM wave demodulation, Envelop detector, Square law detection, Difference between AM modulation and FM modulation
Phase shift keying(PSK)
Phase-shift keying (PSK) is a digital modulation technique that conveys data by changing the phase of a carrier wave. There are several types of PSK including binary PSK (BPSK) and quadrature PSK (QPSK). BPSK uses two phases separated by 180 degrees to transmit 1 bit per symbol, while QPSK uses four phases separated by 90 degrees to transmit 2 bits per symbol for higher data rates. PSK has advantages like more efficient data transmission compared to frequency-shift keying. However, it is non-coherent and more prone to incorrect demodulations. PSK finds applications in optical communications, local oscillators, and delay-and-add demodulation.
Frequency shift keying report
Frequency shift keying (FSK) is a digital modulation technique that encodes digital information by shifting the frequency of a carrier wave. There are different types of FSK including binary FSK, which uses two discrete frequencies to represent binary 1 and 0, and double frequency shift keying (DFSK), which uses four frequencies to transmit two independent data streams simultaneously. FSK modulation can be demodulated using either FM detector demodulators, which treat the FSK signal as an FM signal, or filter-type demodulators, which use optimal filters matched to the FSK signal parameters. The filters are used to detect the mark and space frequencies, and a decision circuit then determines which was transmitted.
Generation and detection of psk and fsk
Phase-shift keying (PSK) is a digital modulation scheme that conveys data by changing (modulating) the phase of a reference signal (the carrier wave). The modulation is impressed by varying the sine and cosine inputs at a precise time. It is widely used for wireless LANs, RFID and Bluetooth communication
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal.[1] The technology is used for communication systems such as amateur radio, caller ID and emergency broadcasts
Comparison of modulation methods
The document discusses various digital modulation schemes, their advantages, disadvantages, and applications. It covers schemes such as DSB-SC, SSB-SC, VSB-SC, FM, PM, PSK, ASK, PAM, QAM, and their uses in applications like analog and digital television broadcasting, radio broadcasting, satellite transmission, cable communication, and optical and telephone communications. Key aspects covered are power and bandwidth efficiency, complexity of generation and detection, immunity to noise, and ability to transmit multiple bits per symbol.
Digital modulation basics(nnm)
Digital modulation techniques allow for more efficient transmission of digital data by varying certain properties of the carrier signal, such as amplitude, frequency, or phase, based on the digital bit stream. There are tradeoffs between bandwidth efficiency, power efficiency, and implementation complexity for different modulation schemes. Common digital modulation techniques include amplitude-shift keying (ASK), frequency-shift keying (FSK), phase-shift keying (PSK), and quadrature amplitude modulation (QAM), with higher-order schemes transmitting more than one bit per symbol. Performance metrics like bit error rate (BER) are used to evaluate and compare modulation techniques.
Communication system 1 chapter 1 ppt
A communications system allows for the transfer of information from an information source to an information sink. It consists of a transmitter that encodes a message from the information source into a transmitted signal, a channel to carry the signal, and a receiver to decode the signal back into a message for the information sink.
The transmitter may perform operations like modulation, amplification, and filtering on the message signal. The channel can be a wireline medium like coaxial cable or a wireless medium like free space. It is subject to degradation from noise, interference and distortion. The receiver performs complementary operations to the transmitter like demodulation, amplification and filtering to recover the original message from the received signal for the information sink.
Ssb generation method
The document discusses three main methods for generating single-sideband suppressed carrier (SSB-SC) signals: the filter method, phase shift method, and Weaver method. The filter method uses a balanced modulator followed by a filter to remove the unwanted sideband. The phase shift method uses two balanced modulators with one audio input phase shifted 90 degrees. The Weaver method uses four balanced modulators, two audio filters, and two 90 degree phase shifters to generate the SSB signal without a filter or complex phase shifter.
3.1 structure of a wireless communicaiton link
The document describes the structure of a wireless communication link. It involves various processes between the transmitter and receiver including source coding, channel coding, modulation, upconversion to radio frequency, propagation over the wireless channel, downconversion to baseband, and decoding. Key components are the analog to digital converter and digital to analog converter, local oscillators, filters, amplifiers, modulators, demodulators, multiplexers, and decoders. The goal is to transmit digital data over an analog wireless channel reliably while accounting for noise and interference.
Amplitude modulation
Analog modulation involves representing analog information as an analog signal. It is needed when the transmission medium is bandpass in nature or only a bandpass channel is available. There are three main types of analog modulation: amplitude modulation (AM), which changes the amplitude of the carrier signal; frequency modulation (FM), which changes the frequency; and phase modulation (PM), which changes the phase. AM encodes the modulating signal as variations in the envelope of the carrier signal. This results in a spectrum with the carrier frequency flanked by upper and lower sidebands. The bandwidth required is twice that of the modulating signal.
Phase shift keying
Phase Shift Keying (PSK) is a digital modulation technique that encodes data by manipulating the phase of a carrier wave. There are three main types of PSK: BPSK uses two phases separated by 180 degrees to represent 1 and 0; QPSK uses four phases separated by 90 degrees to represent 2 bits per symbol; DPSK shifts the phase relative to the previous symbol by 0 or 180 degrees without a reference carrier. PSK is commonly used in optical communications systems due to its efficiency and noise resistance.
Digital modulation techniques
This presentation contain each and every single information on the topic.
If you like it do follow and like my presentation.
It would be worth my efforts.
ANALOG-TO-DIGITAL CONVERSION
Analog-to-digital conversion (ADC) is an electronic process in which a continuously variable, or analog, the signal is changed into a multilevel digital signal without altering its essential content.
Combating fading channels (1) (3)
Wireless communication systems are impacted by fading effects that cause fluctuations in signal strength. Fading occurs due to multipath propagation which results in multiple versions of the transmitted signal reaching the receiver at different times. This can cause either flat or frequency selective fading depending on the delay spread. Modulation techniques like BPSK can be used to combat fading. Simulation of a Rayleigh fading channel, which occurs when there is no dominant signal path, showed that it significantly impacts the bit error rate of a BPSK modulated signal. Future work could explore additional modulation techniques and integrating the model into a network simulator.
More Related Content
What's hot
Digital modulation techniques...
This document discusses various digital modulation techniques. It begins by defining modulation as adding information to a carrier signal. It then distinguishes between analog and digital modulation. Digital modulation modulates an analog carrier signal with a discrete signal, and can be considered as converting digital-to-analog and vice versa. Some key digital modulation techniques discussed include amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK), quadrature amplitude modulation (QAM), and differential phase shift keying (DPSK). Metrics for comparing digital modulation techniques include power efficiency, bandwidth efficiency, and implementation cost-effectiveness.
Digital communication system
The document discusses digital communication systems. It provides examples of digital communication including an email sent to invite team members to a meeting. It then explains the key building blocks of a digital communication system including the input source, source encoder, channel encoder, digital modulator, channel, digital demodulator, channel decoder, source decoder and output transducer. The document also discusses channels used for digital communication, causes of signal loss, and comparisons between digital and analog communication systems.
Lecture6 modulation
Modulation involves combining a carrier signal with a message signal for transmission. There are three main types of analog modulation: frequency modulation, phase modulation, and amplitude modulation. Frequency modulation varies the carrier frequency based on the message signal frequency. It has good noise resistance but requires more complex receivers. Phase modulation varies the carrier phase based on the message signal amplitude. It has less interference but can cause phase ambiguity. Amplitude modulation varies the carrier amplitude based on the message signal, requiring simple circuits but more power. Each type has advantages and disadvantages for different applications in radio, recording, and telecommunications.
Chapter 4
This document provides an overview of amplitude (linear) modulation techniques. It defines key concepts like modulation, baseband communication, and carrier communication. It then describes various amplitude modulation schemes including AM, DSB-SC, QAM, SSB, and VSB. Implementation and demodulation of these techniques is discussed. The document also covers frequency mixing, superheterodyne receivers, frequency division multiplexing, and carrier acquisition using phase-locked loops. Suggested problems are provided at the end.
Phase modulation
Phase modulation (PM) is a form of modulation where information is represented by variations in the instantaneous phase of a carrier wave. The phase angle of the complex envelope is changed in direct proportion to the message signal. PM can be considered a special case of FM where the carrier frequency modulation is given by the time derivative of the phase modulation. The bandwidth of PM for a single sinusoidal signal is approximately equal to the modulation index multiplied by the carrier frequency.
Amplitude modulation & demodulation
This document discusses amplitude modulation and demodulation. It defines amplitude modulation as varying the amplitude of a carrier wave linearly with a message signal while keeping frequency and phase constant. Modulation is used to transmit signals over long distances and allow multiple signals over the same channel. Demodulation recovers the signal intelligence by reversing the modulation process through rectification and filtering. The document describes amplitude modulation and different types of AM demodulation techniques.
Frequency modulation
Frequency modulation was invented by Edwin Howard Armstrong in 1890 and comes in two types: narrow band FM and wide band FM. It works by varying the frequency of the carrier signal based on the modulating signal. FM has advantages like being resilient to noise and signal strength variations while not requiring linear amplifiers, and it allows for greater transmission efficiency than some other modulation modes. However, it requires a more complex demodulator and has lower data spectral efficiency than some other modes since its sidebands extend to infinity. Narrow band FM has a modulation index of less than 1 and a maximum modulating frequency of 3kHz with a maximum frequency deviation of 75kHz.
M ary psk modulation
M- Ary PSK Modulation Technique , make it easier to understand this type of modulation technique which is usually used in communication system
Demodulation of AM wave
AM wave demodulation, Envelop detector, Square law detection, Difference between AM modulation and FM modulation
Phase shift keying(PSK)
Phase-shift keying (PSK) is a digital modulation technique that conveys data by changing the phase of a carrier wave. There are several types of PSK including binary PSK (BPSK) and quadrature PSK (QPSK). BPSK uses two phases separated by 180 degrees to transmit 1 bit per symbol, while QPSK uses four phases separated by 90 degrees to transmit 2 bits per symbol for higher data rates. PSK has advantages like more efficient data transmission compared to frequency-shift keying. However, it is non-coherent and more prone to incorrect demodulations. PSK finds applications in optical communications, local oscillators, and delay-and-add demodulation.
Frequency shift keying report
Frequency shift keying (FSK) is a digital modulation technique that encodes digital information by shifting the frequency of a carrier wave. There are different types of FSK including binary FSK, which uses two discrete frequencies to represent binary 1 and 0, and double frequency shift keying (DFSK), which uses four frequencies to transmit two independent data streams simultaneously. FSK modulation can be demodulated using either FM detector demodulators, which treat the FSK signal as an FM signal, or filter-type demodulators, which use optimal filters matched to the FSK signal parameters. The filters are used to detect the mark and space frequencies, and a decision circuit then determines which was transmitted.
Generation and detection of psk and fsk
Phase-shift keying (PSK) is a digital modulation scheme that conveys data by changing (modulating) the phase of a reference signal (the carrier wave). The modulation is impressed by varying the sine and cosine inputs at a precise time. It is widely used for wireless LANs, RFID and Bluetooth communication
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal.[1] The technology is used for communication systems such as amateur radio, caller ID and emergency broadcasts
Comparison of modulation methods
The document discusses various digital modulation schemes, their advantages, disadvantages, and applications. It covers schemes such as DSB-SC, SSB-SC, VSB-SC, FM, PM, PSK, ASK, PAM, QAM, and their uses in applications like analog and digital television broadcasting, radio broadcasting, satellite transmission, cable communication, and optical and telephone communications. Key aspects covered are power and bandwidth efficiency, complexity of generation and detection, immunity to noise, and ability to transmit multiple bits per symbol.
Digital modulation basics(nnm)
Digital modulation techniques allow for more efficient transmission of digital data by varying certain properties of the carrier signal, such as amplitude, frequency, or phase, based on the digital bit stream. There are tradeoffs between bandwidth efficiency, power efficiency, and implementation complexity for different modulation schemes. Common digital modulation techniques include amplitude-shift keying (ASK), frequency-shift keying (FSK), phase-shift keying (PSK), and quadrature amplitude modulation (QAM), with higher-order schemes transmitting more than one bit per symbol. Performance metrics like bit error rate (BER) are used to evaluate and compare modulation techniques.
Communication system 1 chapter 1 ppt
A communications system allows for the transfer of information from an information source to an information sink. It consists of a transmitter that encodes a message from the information source into a transmitted signal, a channel to carry the signal, and a receiver to decode the signal back into a message for the information sink.
The transmitter may perform operations like modulation, amplification, and filtering on the message signal. The channel can be a wireline medium like coaxial cable or a wireless medium like free space. It is subject to degradation from noise, interference and distortion. The receiver performs complementary operations to the transmitter like demodulation, amplification and filtering to recover the original message from the received signal for the information sink.
Ssb generation method
The document discusses three main methods for generating single-sideband suppressed carrier (SSB-SC) signals: the filter method, phase shift method, and Weaver method. The filter method uses a balanced modulator followed by a filter to remove the unwanted sideband. The phase shift method uses two balanced modulators with one audio input phase shifted 90 degrees. The Weaver method uses four balanced modulators, two audio filters, and two 90 degree phase shifters to generate the SSB signal without a filter or complex phase shifter.
3.1 structure of a wireless communicaiton link
The document describes the structure of a wireless communication link. It involves various processes between the transmitter and receiver including source coding, channel coding, modulation, upconversion to radio frequency, propagation over the wireless channel, downconversion to baseband, and decoding. Key components are the analog to digital converter and digital to analog converter, local oscillators, filters, amplifiers, modulators, demodulators, multiplexers, and decoders. The goal is to transmit digital data over an analog wireless channel reliably while accounting for noise and interference.
Amplitude modulation
Analog modulation involves representing analog information as an analog signal. It is needed when the transmission medium is bandpass in nature or only a bandpass channel is available. There are three main types of analog modulation: amplitude modulation (AM), which changes the amplitude of the carrier signal; frequency modulation (FM), which changes the frequency; and phase modulation (PM), which changes the phase. AM encodes the modulating signal as variations in the envelope of the carrier signal. This results in a spectrum with the carrier frequency flanked by upper and lower sidebands. The bandwidth required is twice that of the modulating signal.
Phase shift keying
Phase Shift Keying (PSK) is a digital modulation technique that encodes data by manipulating the phase of a carrier wave. There are three main types of PSK: BPSK uses two phases separated by 180 degrees to represent 1 and 0; QPSK uses four phases separated by 90 degrees to represent 2 bits per symbol; DPSK shifts the phase relative to the previous symbol by 0 or 180 degrees without a reference carrier. PSK is commonly used in optical communications systems due to its efficiency and noise resistance.
Digital modulation techniques
This presentation contain each and every single information on the topic.
If you like it do follow and like my presentation.
It would be worth my efforts.
What's hot (20)
Similar to Amplitude shift keying (ask).pptx
ANALOG-TO-DIGITAL CONVERSION
Analog-to-digital conversion (ADC) is an electronic process in which a continuously variable, or analog, the signal is changed into a multilevel digital signal without altering its essential content.
Combating fading channels (1) (3)
Wireless communication systems are impacted by fading effects that cause fluctuations in signal strength. Fading occurs due to multipath propagation which results in multiple versions of the transmitted signal reaching the receiver at different times. This can cause either flat or frequency selective fading depending on the delay spread. Modulation techniques like BPSK can be used to combat fading. Simulation of a Rayleigh fading channel, which occurs when there is no dominant signal path, showed that it significantly impacts the bit error rate of a BPSK modulated signal. Future work could explore additional modulation techniques and integrating the model into a network simulator.
Modulation demodulation assignment
The document discusses modems and their functions. It begins by defining a modem as a device that modulates and demodulates signals to allow computers to communicate over telephone lines. It then describes the main components of a modem:
1. Modulation: The process of varying a carrier signal to encode digital data for transmission.
2. Demodulation: The process of extracting the original digital data from the received modulated carrier signal.
3. Analog to digital and digital to analog conversion: Processes that allow analog signals to be transmitted over phone lines by converting between analog and digital formats.
The document goes on to discuss different types of modulation, demodulation, and conversion techniques in more detail.
Digital Modulation ppt for everyone who wants it
This document provides an introduction to digital modulation techniques. It explains that digital modulation encodes digital data onto an analog carrier signal for transmission. There are three main types of digital modulation: amplitude shift keying (ASK) which varies the amplitude of the carrier, frequency shift keying (FSK) which varies the frequency, and phase shift keying (PSK) which varies the phase. Each technique modifies one characteristic of the carrier signal based on the digital data. Simulink implementations are also shown for each technique.
RF Mixed Signal Guidi-McIllree-Stannard
The document summarizes the design of a DSP-based modem developed jointly by the University of South Australia and JNS Electronics for high data-rate transmission applications. Key aspects of the modem design include:
1) Achieving high spectral efficiency to minimize spurious emissions outside frequency bands, addressing both microwave terrestrial and satellite communications.
2) The modulator and demodulator blocks, including digital modulation schemes like 8PSK and 16QAM for spectral efficiency and error correction coding.
3) The upconverter and downconverter designs which meet Australia's tight emission specifications and minimize phase noise and filtering distortions.
4) The digital aspects of the modem including filters, synchronization algorithms, and specialized hardware like FPG
Data encoding and modulation
Data encoding and modulation techniques are discussed. Modulation involves varying properties of a high-frequency carrier signal according to a message signal. This allows transmission of baseband signals over long distances. Common modulation types are amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). Encoding converts data into formats for transmission, storage, processing and more. Common encoding schemes for digital data transmission include non-return to zero (NRZ) encoding and Manchester encoding. Pulse modulation can transmit signals as pulses using techniques like pulse code modulation (PCM).
Modulation in telecommunication
Modulation is the process of encoding information from a message source for transmission. This is done by altering the characteristics of a carrier wave, such as its amplitude, frequency, or phase. There are two main types of modulation - analog and digital. Analog modulation varies the carrier wave continuously while digital modulation uses discrete levels. Modulation is used in telecommunications to allow signals like voice and video to travel long distances wirelessly by transmitting them on carrier waves with much higher frequencies than the original signals. This reduces the necessary antenna size and allows separation of channels to prevent interference during transmission.
Chapter_1.pptx
The document provides an overview of key topics in wireless and mobile communication including fundamental communication terms, types of communication systems and channels, bandwidth, and the evolution of wireless technologies. It discusses models of wireless digital communication links and describes the basic functions of transmitters and receivers. The document also outlines tasks performed at the transmitter and receiver such as channel estimation, equalization, and modulation/demodulation.
Networking notes part2 final
what is modulation and types of it, amplitude modulation, frequency modulation, Phase modulation, Digital to Analog , Analog to Digital, Amplitude Shift Keying, Frequency Shift Keying, Phase Shift Keying
AM modulation and Demodulation with Circuit and Output
Here we use IC8038 as a signal generator to generate modulating and carrier signal. IC1496 a Balance Modulator IC used for modulation purpose, for demodulation purpose simple Diode Detector(Envelop type) is used.
SIGNAL_CONVERSION.docx
1) Analog to digital conversion involves sampling, quantizing, and encoding an analog signal to represent it as discrete digital values. Pulse code modulation is the most common technique which uses a low pass filter, sampler, and encoder.
2) Digital to analog conversion reconstructs the analog signal from discrete digital values using techniques like amplitude shift keying, frequency shift keying, and phase shift keying that modulate properties of a carrier signal.
3) A wireless sensor network is an ad hoc network of sensors that monitor physical conditions and communicate wirelessly, enabling applications in areas like environmental monitoring and healthcare. Challenges include energy efficiency, security, and coping with node failures.
Iuhtophc bffcss prdtdfdh- BHDMB, FVIB, FVIB/FB blgFVIB/FG
This document discusses wireless network modulation techniques. It covers signal encoding/modulation where digital data is transmitted using analog signals. Encoding converts data into a specified format for transmission while decoding extracts the information. Modulation involves superimposing a low-frequency information signal onto a high-frequency carrier signal. Common analog modulation methods include amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). The document also discusses types of modulation like amplitude shift keying (ASK), binary frequency shift keying (BFSK), and phase-shift keying (PSK). Modulation is needed to transmit baseband signals over longer distances by increasing their strength using a high frequency carrier wave.
Cs2204 analog & digital communication question bank
This document contains a syllabus for the subject "Analog and Digital Communication". It includes 5 units:
1. Fundamentals of Analog Communication covering AM modulation, bandwidth, and angle modulation.
2. Digital Communication including Shannon limit, digital modulation techniques like FSK, PSK, and QAM.
3. Digital Transmission covering pulse modulation techniques like PCM, DPCM, and eye patterns.
4. Data Communications covering standards, circuits, error control codes and interfaces.
5. Spread Spectrum and Multiple Access covering DS-SS, FH-SS, TDMA, CDMA and speech coding for wireless systems.
The syllabus provides learning outcomes for each unit and
Communication System (3).ppt
Digital communication systems have several advantages over analog systems:
1) Digital signals can be repeated without amplification, avoiding cumulative noise.
2) Digital error correction allows transmission over longer distances with better data integrity.
3) Digital techniques facilitate higher bandwidth and more efficient multiplexing of multiple signals.
Iboc technology for digital radio
This document discusses IBOC (In Band On Channel) technology for digital radio broadcasting. IBOC allows digital signals to be transmitted simultaneously with analog signals on the same frequency band. It utilizes additional digital subcarriers or sidebands to "multiplex" digital information onto existing AM or FM analog broadcasts. IBOC maintains compatibility with existing analog radio formats. The document explores IBOC's hybrid and extended hybrid transmission modes, implementation techniques like low-level and high-level signal combining, advantages over analog like improved sound quality and data services, and challenges delaying its adoption like high equipment costs.
Comparison of Single Carrier and Multi-carrier.ppt
This document describes a project comparing single carrier and multi-carrier transmission schemes in a wireless multipath channel. A group of electrical engineering students - Asghar Hasnain, Anantakrishna Varanasi, and Pavan Venugopal - worked on the project under professor Dr. Pao Lo Liu and teaching assistant Saurav Bandyopadhyay. The project involved using MATLAB to simulate both transmission schemes and measure their bit error rates in the presence of inter-symbol interference caused by multipath delay spread. The results showed that multi-carrier transmission via OFDM outperformed single carrier transmission for a given channel and equal forward error correction.
Send message with optic communication english
This document describes a circuit designed to improve optical communication by reducing power consumption and increasing transmission rates. The circuit uses lasers and optical fibers to transmit digital or analog signals with low error rates. It works by converting electrical signals to optical pulses using a laser, transmitting the pulses through optical fibers, and then converting them back to electrical signals. By switching to optical fiber transmission, the circuit avoids issues like noise, signal loss over long distances, and interference from electromagnetic fields. It further optimizes the system using techniques like pulse amplitude modulation and assigning more bits to represent lower probability values to reduce power usage.
Digital communication viva questions
Digital communication viva questions.( 50+)
MCQ of digital communication (50+)
communication systems MCQ. (50+)
communication systems viva questions (50+)
covered topic list:
sampling,quantization,digital,discrete,AM,FM,PM,ASK,FSK,PSK,DM,DPCM,QPSK,ADM,differences,modulation,block diagram,applications,PAM,PWM,PPM,line encoding,polar encoding,bipolar encoding,unipolar encoding,RZ,NRZ,AMI,HDB3,B8ZS
EC 6651 Communication Engineering
This document provides an overview of the Communication Engineering course EC6651. The objectives are to introduce various analog and digital communication methods, source and line coding techniques, and multiple access techniques used in communication systems. The 5 units cover topics like analog communication systems, digital communication, source and line codes/error control, multiple access techniques, and satellite/optical fiber/powerline communications. The course aims to help students understand and analyze linear and digital electronic circuits as applied to communication systems.
Design and Implementation of OFDM Trans-Receiver for IEEE 802.11(WLAN)
Electrical Engineering,Mechanical Engineering,Computer Science & Engineering,Artificial Intelligence,Material Science,Mathematicse,Applied physics,Applied Chemistry,Electronics Engineering,Instrumentation Engineering,Civil Engineering,Earth quake Engineering,Structural engineering,
Similar to Amplitude shift keying (ask).pptx (20)
AM modulation and Demodulation with Circuit and Output
AM modulation and Demodulation with Circuit and Output
Iuhtophc bffcss prdtdfdh- BHDMB, FVIB, FVIB/FB blgFVIB/FG
Iuhtophc bffcss prdtdfdh- BHDMB, FVIB, FVIB/FB blgFVIB/FG
Cs2204 analog & digital communication question bank
Cs2204 analog & digital communication question bank
Comparison of Single Carrier and Multi-carrier.ppt
Comparison of Single Carrier and Multi-carrier.ppt
Design and Implementation of OFDM Trans-Receiver for IEEE 802.11(WLAN)
Design and Implementation of OFDM Trans-Receiver for IEEE 802.11(WLAN)
More from LamisaFaria
Blood Bank Management System
Blood bank management system is an online software system that helps in managing various blood banks in a better way. This project gives information about various blood deposits available along with associated details. Blood Bank Management System (BBMS) is a web based system that can assists the information of blood bag during its handling in the blood bank.
Blue Economy
The blue economy refers to the sustainable use and preservation of ocean resources for economic growth. It includes industries like fishing, aquaculture, tourism, biotechnology, and shipping. Bangladesh has significant potential for blue economic development given its location and resources. Key sectors include fisheries and aquaculture, natural resources and energy, and tourism. Realizing this potential will require reliable data, long and short-term planning, technology and skills, sustainable practices, and global partnerships.
Goal based agent
Goal-based agent is capable of thinking beyond the present
moment to decide the best actions to take in order to achieve its
goal. It has a model based basic purpose and has knowledge of
the past. Its main purpose is searching and planning. It has
flexibility to adjust its actions based on successfully reaching a
goal.
IBM
The document summarizes a presentation on patterns of management at IBM. It discusses factors that made IBM successful such as vision, recruitment policies, and corporate culture. It also analyzes statements about IBM establishing an open-door policy to eliminate top management isolation, and basing recruitment on competence not personal liking in line with management principles. Finally, it considers IBM's job cutting decision as wise given changing markets, and recommends ways to tackle cutting over 10,000 jobs such as giving time to find other jobs and extra payment.
The internet of things.pptx
The document discusses the Internet of Things (IoT). It provides examples of IoT devices like smart homes, smart locks, and smart mirrors. It outlines advantages like convenience, tracking capabilities, and cost savings. Disadvantages include lack of compatibility standards, complexity, privacy/security risks, and potential safety issues if devices are hacked. Finally, it briefly profiles several IoT companies like ARM, Bosch, and Ericsson that are helping enable the connection of billions of devices through sensors and networking.
The main gdp drivers of bangladesh & the impact of the covid 19 pandemic on t...
The main GDP drivers of Bangladesh are agriculture, industry, and services. The Covid-19 pandemic is estimated to reduce Bangladesh's GDP growth rate in 2020 to 2% from the projected 8.2% due to lockdowns. Key sectors like ready-made garments, exports, and remittances have been negatively impacted. The pandemic has increased poverty and unemployment in Bangladesh as the economy struggles to recover.
More from LamisaFaria (6)
The main gdp drivers of bangladesh & the impact of the covid 19 pandemic on t...
The main gdp drivers of bangladesh & the impact of the covid 19 pandemic on t...
Recently uploaded
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECT
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
china’s geo economic outreach in central Asian countries and its future prospect. China is thriving in trade,
pipeline politics, and winning states, according to this study, thanks to important instruments like the
Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
China is seeing significant success in commerce, pipeline politics, and gaining influence on other
governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, SerbiaNew techniques for characterising damage in rock slopes.pdf
rock mass characterization and New techniques for characterising damage in rock slopes
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
Understanding Inductive Bias in Machine Learning
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Literature Review Basics and Understanding Reference Management.pptx
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
Casting-Defect-inSlab continuous casting.pdf
Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
Comparative analysis between traditional aquaponics and reconstructed aquapon...
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
A review on techniques and modelling methodologies used for checking electrom...
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
Recycled Concrete Aggregate in Construction Part II
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Modelagem de um CSTR com reação endotermica.pdf
Modelagem em função de transferencia. CSTR não-linear.
22CYT12-Unit-V-E Waste and its Management.ppt
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Embedded machine learning-based road conditions and driving behavior monitoring
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
哪里办理(csu毕业证书)查尔斯特大学毕业证硕士学历原版一模一样
原版一模一样【微信：741003700 】【(csu毕业证书)查尔斯特大学毕业证硕士学历】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Recently uploaded (20)
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECT
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECT
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
Generative AI leverages algorithms to create various forms of content
Generative AI leverages algorithms to create various forms of content
New techniques for characterising damage in rock slopes.pdf
New techniques for characterising damage in rock slopes.pdf
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Literature Review Basics and Understanding Reference Management.pptx
Literature Review Basics and Understanding Reference Management.pptx
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...
A review on techniques and modelling methodologies used for checking electrom...
A review on techniques and modelling methodologies used for checking electrom...
Recycled Concrete Aggregate in Construction Part II
Recycled Concrete Aggregate in Construction Part II
ML Based Model for NIDS MSc Updated Presentation.v2.pptx
ML Based Model for NIDS MSc Updated Presentation.v2.pptx
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Embedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoring
Amplitude shift keying (ask).pptx
- 1. AMPLITUDE SHIFT KEYING (ASK) SubmittedTo: Mr. Rifat Ahommed Lecturer Department of Computer Science & Engineering Southeast University Group Members: Lamisa Sobnom Faria 2019000000097 Md. Faysal Khandker 2019000000099 Shanta Akter 2019000000103
- 2. CONTENTS • Introduction • Modulation • Demodulation • Waveform • Equation • Advantages • Disadvantages • Applications
- 3. INTRODUCTION •Amplitude-shift keying (ASK) is a form of modulation that represents digital data as variations in the amplitude of a carrier wave. •The amplitude of an analog carrier signal varies in accordance with the bit stream (modulating signal), keeping frequency and phase constant. •The level of amplitude can be used to represent binary logic 0s and 1s.
- 4. MODULATION • Generate carrier signal. • Start FOR loop • Generate binary data, message signal(on-off form) • Generate ASK modulated signal. • Plot message signal and ASK modulated signal. • End FOR loop. • Plot the binary data and carrier.
- 5. DEMODULATION • Perform correlation of ASK signal with carrier to get decision variable. • Make decision to get demodulated binary data. If x>0, choose ‘1’ else choose ‘0’ • Plot the demodulated binary data. • Some sort of decision-making circuitry to get the bit stream back.
- 6. WAVEFORM
- 7. EQUATIONS
- 8. ADVANTAGES • It can be used to transmit digital data over optical fiber. • The receiver and transmitter have a simple design which also makes it comparatively inexpensive. • It uses lesser bandwidth as compared to FSK thus it offers high bandwidth efficiency. • The wave generated is quite simple to detect and generate
- 9. DISADVANTAGES • It has very poor bandwidth efficiency . • Not suitable for wireless communication. • It is not fit for high bit rate data transmission. • High power consumption.
- 10. APPLICATIONS • Low-frequency RF applications. • Home automation devices. • Industrial networks devices. • Wireless base stations. • Tire pressuring monitoring systems. • Used in satellite link.
- 11. THANK YOU