Unguided Media
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This document discusses different types of unguided media used for wireless communication, including radio waves, microwaves, and infrared waves. It provides information on the electromagnetic spectrum ranges, propagation modes, antenna types, common usages, advantages, disadvantages, and dangers of each type of unguided media. Presenters and their member IDs are listed at the beginning.
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Unguided media
Unguided media, also known as wireless media, transmit data through space without the use of wires or cables. This includes transmission via radio waves, microwaves, and infrared waves. Radio waves are used for WiFi, mobile phones, remote controls, television broadcasts, and more. Modulation involves varying properties of a signal, and can be analog, transferring signals like audio, or digital, transferring bit streams. Infrared waves are used for short-range communication like night vision cameras, remote controls, and file sharing between devices that require a direct line of sight.
Wireless Network
Wireless networks communicate using electromagnetic waves transmitted through antennas without physical connections like wires. They have advantages over wired networks such as quick installation, mobility, and lower maintenance costs. There are different types of wireless networks including WPAN for personal networks covering short distances, WLAN for local networks, WMAN for metropolitan networks, and WWAN for wide area networks. Key wireless technologies discussed include Bluetooth, WiMax, and protocols for mobile phones.
Guided and unguided media
Guided media uses physical cabling to guide transmission signals along a specific path and includes twisted pair cable, coaxial cable, and optical fiber. Twisted pair cable consists of two insulated copper wires twisted together, and can be unshielded or shielded. Coaxial cable contains two conductors separated by insulation. Fiber optic cable transmits information using pulses of light through glass cores. Unguided media uses electromagnetic waves to transmit without cabling through radio waves, microwaves, or infrared signals broadcast through free space. Radio waves can travel long distances, microwaves require line-of-sight and focused antennas, while infrared works for short-range indoor use.
Ppt for tranmission media
Transmission media are located below the physical layer and are used to transmit signals representing data. There are two main types of transmission media: guided media (wired), which provide a conduit for transmission, and unguided media (wireless), which transmit via electromagnetic waves without a physical pathway. Common guided media include twisted-pair cable, coaxial cable, and fiber-optic cable. Unguided media include radio waves, microwaves, and infrared. Each type of transmission media has different characteristics that determine its suitable uses.
Wi fi and it’s applications
This document discusses Wi-Fi and its applications. It defines Wi-Fi as a wireless technology brand owned by the Wi-Fi Alliance that uses IEEE 802.11 standards for interoperable wireless local area network (WLAN) products. The document outlines the history of Wi-Fi, its common uses like sharing files and streaming media, benefits such as mobility and reduced costs, security goals, typical ranges, and applications like enabling collaboration and providing internet access in public spaces.
Unguided media in Networks
Computers and devices use electromagnetic signals to transmit data through transmission media. Transmission media can be divided into guided and unguided categories. Unguided media, also called wireless communication, transports signals through the air without a physical conductor. Unguided signals can travel from source to destination in several ways, including ground propagation along the earth's surface, sky propagation reflecting signals off the ionosphere, and line-of-sight propagation transmitting signals directly between antennas.
Wireless communication technologies
Wireless communication technologies allow for mobility and flexibility through radio signals rather than wired connections. They include technologies like Bluetooth, WiFi, wireless LANs and MANs that enable applications such as video conferencing, telemedicine, and distance learning. Common wireless standards are IEEE 802.11 for WiFi and IEEE 802.16 for WiMax. Wireless networks face challenges of limited spectrum availability, lower bandwidth and higher delays compared to wired networks. Emerging wireless technologies are expanding connectivity and access to services for more users.
Wireless Communication
The presentation introduces wireless communication, including its definition as transmitting and receiving voice and data using electromagnetic waves without wires. It discusses why wireless communication is needed, such as freedom from wires and global coverage. It then covers how wireless communication takes place, the mechanisms involved, and common types of wireless systems like radio, Wi-Fi, Bluetooth, and cellular networks.
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Unguided media
Unguided media, also known as wireless media, transmit data through space without the use of wires or cables. This includes transmission via radio waves, microwaves, and infrared waves. Radio waves are used for WiFi, mobile phones, remote controls, television broadcasts, and more. Modulation involves varying properties of a signal, and can be analog, transferring signals like audio, or digital, transferring bit streams. Infrared waves are used for short-range communication like night vision cameras, remote controls, and file sharing between devices that require a direct line of sight.
Wireless Network
Wireless networks communicate using electromagnetic waves transmitted through antennas without physical connections like wires. They have advantages over wired networks such as quick installation, mobility, and lower maintenance costs. There are different types of wireless networks including WPAN for personal networks covering short distances, WLAN for local networks, WMAN for metropolitan networks, and WWAN for wide area networks. Key wireless technologies discussed include Bluetooth, WiMax, and protocols for mobile phones.
Guided and unguided media
Guided media uses physical cabling to guide transmission signals along a specific path and includes twisted pair cable, coaxial cable, and optical fiber. Twisted pair cable consists of two insulated copper wires twisted together, and can be unshielded or shielded. Coaxial cable contains two conductors separated by insulation. Fiber optic cable transmits information using pulses of light through glass cores. Unguided media uses electromagnetic waves to transmit without cabling through radio waves, microwaves, or infrared signals broadcast through free space. Radio waves can travel long distances, microwaves require line-of-sight and focused antennas, while infrared works for short-range indoor use.
Ppt for tranmission media
Transmission media are located below the physical layer and are used to transmit signals representing data. There are two main types of transmission media: guided media (wired), which provide a conduit for transmission, and unguided media (wireless), which transmit via electromagnetic waves without a physical pathway. Common guided media include twisted-pair cable, coaxial cable, and fiber-optic cable. Unguided media include radio waves, microwaves, and infrared. Each type of transmission media has different characteristics that determine its suitable uses.
Wi fi and it’s applications
This document discusses Wi-Fi and its applications. It defines Wi-Fi as a wireless technology brand owned by the Wi-Fi Alliance that uses IEEE 802.11 standards for interoperable wireless local area network (WLAN) products. The document outlines the history of Wi-Fi, its common uses like sharing files and streaming media, benefits such as mobility and reduced costs, security goals, typical ranges, and applications like enabling collaboration and providing internet access in public spaces.
Unguided media in Networks
Computers and devices use electromagnetic signals to transmit data through transmission media. Transmission media can be divided into guided and unguided categories. Unguided media, also called wireless communication, transports signals through the air without a physical conductor. Unguided signals can travel from source to destination in several ways, including ground propagation along the earth's surface, sky propagation reflecting signals off the ionosphere, and line-of-sight propagation transmitting signals directly between antennas.
Wireless communication technologies
Wireless communication technologies allow for mobility and flexibility through radio signals rather than wired connections. They include technologies like Bluetooth, WiFi, wireless LANs and MANs that enable applications such as video conferencing, telemedicine, and distance learning. Common wireless standards are IEEE 802.11 for WiFi and IEEE 802.16 for WiMax. Wireless networks face challenges of limited spectrum availability, lower bandwidth and higher delays compared to wired networks. Emerging wireless technologies are expanding connectivity and access to services for more users.
Wireless Communication
The presentation introduces wireless communication, including its definition as transmitting and receiving voice and data using electromagnetic waves without wires. It discusses why wireless communication is needed, such as freedom from wires and global coverage. It then covers how wireless communication takes place, the mechanisms involved, and common types of wireless systems like radio, Wi-Fi, Bluetooth, and cellular networks.
Communication Channels
In telecommunications and computer networking, a communication channel or channel, refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel. A channel is used to convey an information signal, for example a digital bit stream, from one or several senders (or transmitters) to one or several receivers. A channel has a certain capacity for transmitting information, often measured by its bandwidth in Hz or its data rate in bits per second.Communicating data from one location to another requires some form of pathway or medium. These pathways, called communication channels, use two types of media: cable (twisted-pair wire, cable, and fiber-optic cable) and broadcast (microwave, satellite, radio, and infrared). Cable or wire line media use physical wires of cables to transmit data and information. Twisted-pair wire and coaxial cables are made of copper, and fiber-optic cable is made of glass.
These are examples of commonly used channel capacity and performance measures:
Spectral bandwidth in Hertz
Symbol rate in baud, pulses/s or symbols/s
Digital bandwidth bit/s measures: gross bit rate (signalling rate), net bit rate (information rate), channel capacity, and maximum throughput
Channel utilization
Link spectral efficiency
Signal-to-noise ratio measures: signal-to-interference ratio, Eb/No, carrier-to-interference ratio in decibel
Bit-error rate (BER), packet-error rate (PER)
Latency in seconds: propagation time, transmission time
Delay jitter
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2.4 GHz Open band
Globally available
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Up to 8 active devices can be in the same piconet
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Microwave Transmission
Microwave technology can be used for LANs, extended LANs, and mobile computing. It uses either terrestrial (ground-based) links or satellite links. There are three forms of mobile computing: packet-radio networking, cellular networking, and satellite station networking. Terrestrial microwave links employ line-of-sight transmitters and receivers in the low gigahertz range, requiring stations every 30 miles, while satellite links use geosynchronous satellites to relay signals over long distances. Microwave systems offer advantages like no cables and wide bandwidth but have disadvantages like disruption from obstacles and signal absorption.
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Communication Channels
A communication channel is a medium through which information is transmitted between two points. It can be either guided or unguided. Guided channels use physical transmission media like twisted pair cables, coaxial cables, and fiber optic cables to transmit signals. Unguided channels transmit signals through the air without physical connections, using technologies like microwaves, communication satellites, radio broadcasts, and cellular networks. Communication channels are evaluated based on their bandwidth, or how much data they can carry per unit of time. Fiber optic cables provide the highest bandwidth and fastest transmission speeds of all communication channel types.
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Human: Thank you for the summary. It effectively captured the key points about wireless communication in just 3 sentences as requested.
Pstn (Public Switched Telephone Networks)
PSTN is the global collection of interconnects originally designed to support circuit switched voice communication.
The PSTN provides traditional Plain Old Telephone Service (POTS), also known as “landline phone” service , to residences & many other establishments.
Parts of the PSTN are also utilized for DSL, voIP & other Internet based network technologies.
Unguided media
Transmission media can be either guided or unguided. Guided media uses physical pathways like cables to transmit signals while unguided or wireless media transmits electromagnetic waves without a physical conductor. Wireless transmission uses radio waves, microwaves, and infrared signals to transmit data through methods like ground propagation, sky propagation, and line-of-sight propagation from an antenna of one device to another.
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wired and wireless networks
This document discusses and compares wired and wireless networks. Wired networks transmit data through physical cables connecting devices, while wireless networks transmit data through the air using electromagnetic waves without cables. Examples of wired networks include telephone lines, cable TV, and fiber optic networks, while wireless technologies include radio frequencies, infrared, Bluetooth, Wi-Fi, and satellite communication.
History of wireless communication
1. Wireless communication has existed for millennia using smoke signals, light signals, and flags but long-distance wireless communication was not possible until the 19th century.
2. In the late 19th century, scientific discoveries by Maxwell, Hertz, Tesla, and Marconi laid the foundation for modern radio-based wireless communication using electromagnetic waves.
3. The 20th century saw rapid advances including the first radio broadcasts, development of cell phone networks beginning in the late 1940s-1950s, and the introduction of digital cellular standards like GSM in the 1980s-1990s that enabled international roaming.
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Mobile communication
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Paging System
A pager is a communicating device that transmits messages quickly using a strong network of high-powered transmitters. It silently notifies the user with a beep and instantly transmits information, helping to increase productivity and guest satisfaction through faster service. While limited in message capability and unable to verify receipt, pagers remain useful for essential services and in situations where mobile phones are unreliable.
Cordless telephone
A cordless telephone replaces the handset cord with a radio link between the handset and a base station connected to a fixed telephone line. The range is limited to the same building or short distance from the base station. Unlike a corded phone, a cordless phone needs power to the base station and a rechargeable battery in the handset. Various frequency bands have been used for cordless phones over time, with newer digital technologies providing improved security against eavesdropping compared to older analog models.
Mobile communication systems Introduction
An electronic telecom device, often called a cellphone, connects to wireless networks through radio waves or satellites to provide voice calls, text messages, multimedia messages, internet browsing, and email. Mobile phones use various wireless communication standards including Bluetooth, Zigbee, Home RF, 2G, 3G, and 4G cellular networks to connect to networks and transmit data. 2G networks are the most widely used generation of mobile communication technology currently.
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Communication Channels
In telecommunications and computer networking, a communication channel or channel, refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel. A channel is used to convey an information signal, for example a digital bit stream, from one or several senders (or transmitters) to one or several receivers. A channel has a certain capacity for transmitting information, often measured by its bandwidth in Hz or its data rate in bits per second.Communicating data from one location to another requires some form of pathway or medium. These pathways, called communication channels, use two types of media: cable (twisted-pair wire, cable, and fiber-optic cable) and broadcast (microwave, satellite, radio, and infrared). Cable or wire line media use physical wires of cables to transmit data and information. Twisted-pair wire and coaxial cables are made of copper, and fiber-optic cable is made of glass.
These are examples of commonly used channel capacity and performance measures:
Spectral bandwidth in Hertz
Symbol rate in baud, pulses/s or symbols/s
Digital bandwidth bit/s measures: gross bit rate (signalling rate), net bit rate (information rate), channel capacity, and maximum throughput
Channel utilization
Link spectral efficiency
Signal-to-noise ratio measures: signal-to-interference ratio, Eb/No, carrier-to-interference ratio in decibel
Bit-error rate (BER), packet-error rate (PER)
Latency in seconds: propagation time, transmission time
Delay jitter
BLUETOOTH TECHNOLOGY
2.4 GHz Open band
Globally available
Other devices include microwave ovens, cordless phones
Frequency hopping and Time Division Multiplexing
10 – 100 meter range
Up to 8 active devices can be in the same piconet
CORDLESS SYSTEMS
The document discusses different generations of cordless telephone systems including CT0, CT1, CT2, CT3, DECT, PHS, PACS, PCS and PWTS. It provides details on the operating principles, features and applications of each system. CT0 operates at 916/960MHz using FM modulation. CT2 uses TDMA/TDD and supports two-way calling. DECT is commonly implemented as an office wireless PBX connected to the PSTN. It offers speech and data transmission up to 300kbps. While various cordless systems were used in Tanzania in the past, DECT is now commonly used in offices and PHS declined due to lower cellular costs.
Microwave Transmission
Microwave technology can be used for LANs, extended LANs, and mobile computing. It uses either terrestrial (ground-based) links or satellite links. There are three forms of mobile computing: packet-radio networking, cellular networking, and satellite station networking. Terrestrial microwave links employ line-of-sight transmitters and receivers in the low gigahertz range, requiring stations every 30 miles, while satellite links use geosynchronous satellites to relay signals over long distances. Microwave systems offer advantages like no cables and wide bandwidth but have disadvantages like disruption from obstacles and signal absorption.
Bluetooth technology by polite group
This Presentation is prepared by the higher authority of polite group
under the supervision of Syed Mubashair Abid and other members are Ch.Junaid Arshad and Muhammad Aftab Mustafa
Wireless communication
The document discusses various types of wireless communication technologies. It describes how wireless communication allows transmission of information through electromagnetic waves like radio frequency and infrared without wires. It provides details on different wireless technologies including satellite communication, infrared, microwave communication, WiFi, Bluetooth, mobile communication systems and more. It also discusses concepts like multiple access techniques, wireless standards and compares cellular communication generations.
Communication Channels
A communication channel is a medium through which information is transmitted between two points. It can be either guided or unguided. Guided channels use physical transmission media like twisted pair cables, coaxial cables, and fiber optic cables to transmit signals. Unguided channels transmit signals through the air without physical connections, using technologies like microwaves, communication satellites, radio broadcasts, and cellular networks. Communication channels are evaluated based on their bandwidth, or how much data they can carry per unit of time. Fiber optic cables provide the highest bandwidth and fastest transmission speeds of all communication channel types.
Topic: ISDN (Integrated Services Digital Network)
These slides cover a topic on ISDN (Integrated Services Digital Network) in Data Communication. All the slides are explained in a very simple manner. It is useful for engineering students & also for the candidates who want to master data communication & computer networking.
Wireless communication
Wireless communication allows for freedom from wires and instantaneous communication without physical connections. It provides global coverage for communication that can reach areas where wiring is infeasible or costly. Wireless communication transmits voice and data using radio waves without wires. It uses different frequency channels that can transmit information independently and in parallel. While wireless communication provides mobility and flexibility, it also faces security and physical obstruction issues compared to wired communication.
Human: Thank you for the summary. It effectively captured the key points about wireless communication in just 3 sentences as requested.
Pstn (Public Switched Telephone Networks)
PSTN is the global collection of interconnects originally designed to support circuit switched voice communication.
The PSTN provides traditional Plain Old Telephone Service (POTS), also known as “landline phone” service , to residences & many other establishments.
Parts of the PSTN are also utilized for DSL, voIP & other Internet based network technologies.
Unguided media
Transmission media can be either guided or unguided. Guided media uses physical pathways like cables to transmit signals while unguided or wireless media transmits electromagnetic waves without a physical conductor. Wireless transmission uses radio waves, microwaves, and infrared signals to transmit data through methods like ground propagation, sky propagation, and line-of-sight propagation from an antenna of one device to another.
Mobile Computing (Part-1)
Mobile computing allows users to access network services and computational resources from anywhere using portable devices like laptops, smartphones, and tablets. It is defined as computing using portable devices that maintain network connectivity while on the move. Mobile computing faces challenges like low bandwidth, disconnection, and security risks compared to wired networks. Future advancements may include increased use of artificial intelligence and integrated circuits to develop more compact devices with faster processors. Mobile computing has transitioned through generations from 1G analog cellular to 2G digital cellular to 3G broadband cellular and beyond to 4G and 5G.
wired and wireless networks
This document discusses and compares wired and wireless networks. Wired networks transmit data through physical cables connecting devices, while wireless networks transmit data through the air using electromagnetic waves without cables. Examples of wired networks include telephone lines, cable TV, and fiber optic networks, while wireless technologies include radio frequencies, infrared, Bluetooth, Wi-Fi, and satellite communication.
History of wireless communication
1. Wireless communication has existed for millennia using smoke signals, light signals, and flags but long-distance wireless communication was not possible until the 19th century.
2. In the late 19th century, scientific discoveries by Maxwell, Hertz, Tesla, and Marconi laid the foundation for modern radio-based wireless communication using electromagnetic waves.
3. The 20th century saw rapid advances including the first radio broadcasts, development of cell phone networks beginning in the late 1940s-1950s, and the introduction of digital cellular standards like GSM in the 1980s-1990s that enabled international roaming.
Introduction to 4G Network
4G is the fourth generation of wireless mobile telecommunications technology. It provides significantly higher data rates, supports seamless connection of various networks, and offers fully IP-based internet access. Key features of 4G include speeds of up to 1 Gbps, orthogonal frequency-division multiple access (OFDMA) for optimal bandwidth utilization, IPv6 compatibility to support a vast number of devices, and smart antenna technology for seamless handoffs and space division multiple access. 4G aims to deliver an always connected wireless experience with end-to-end quality of service for voice, streaming multimedia, and internet access anytime, anywhere.
Mobile communication
1. The document discusses 1G and 2G mobile communication technologies. 1G used analog FDMA technology for voice calls only, while 2G introduced digital TDMA and CDMA to support voice, data, and multimedia on mobile networks.
2. 1G speeds ranged from 28-56kbps while 2G networks supported speeds up to 115kbps. Digital encoding in 2G also made networks more spectrum efficient and enabled features like SMS and internet access.
3. The document provides details on GSM, CDMA, and GPRS as the main 2G standards and discusses frequency reuse techniques like cell sectoring to reduce interference in mobile networks.
Paging System
A pager is a communicating device that transmits messages quickly using a strong network of high-powered transmitters. It silently notifies the user with a beep and instantly transmits information, helping to increase productivity and guest satisfaction through faster service. While limited in message capability and unable to verify receipt, pagers remain useful for essential services and in situations where mobile phones are unreliable.
Cordless telephone
A cordless telephone replaces the handset cord with a radio link between the handset and a base station connected to a fixed telephone line. The range is limited to the same building or short distance from the base station. Unlike a corded phone, a cordless phone needs power to the base station and a rechargeable battery in the handset. Various frequency bands have been used for cordless phones over time, with newer digital technologies providing improved security against eavesdropping compared to older analog models.
Mobile communication systems Introduction
An electronic telecom device, often called a cellphone, connects to wireless networks through radio waves or satellites to provide voice calls, text messages, multimedia messages, internet browsing, and email. Mobile phones use various wireless communication standards including Bluetooth, Zigbee, Home RF, 2G, 3G, and 4G cellular networks to connect to networks and transmit data. 2G networks are the most widely used generation of mobile communication technology currently.
4g mobile-communication-system-1219761984973028-8
4G is the fourth generation of wireless mobile telecommunications technology. It will provide significantly higher data rates, lower costs, and a better quality of service compared to 3G. 4G networks will utilize technologies like OFDM, software-defined radio, MIMO and interlayer optimization to support heterogeneous networks with seamless roaming between services. This will allow users freedom and flexibility to access broadband multimedia services anytime, anywhere at affordable prices.
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Unguided Media
Unguided media is also known as wireless communication. It does not require any physical medium to transmit any electromagnetic signals.
Medium media transmits electromagnetic signals through the air to all. These signals are available to anyone who has a device capable of receiving those signals.
Signals go from transmitter to beneficiary by means of a way. this path called the media can be guided media or unguided media.
A guided media is contained within physical boundaries, while an unguided media is boundless.
It is also known as unbounded media and does not have any specific limits. All this allows the user to stay connected at all times.
Because the communication done by it is wireless, the user can connect himself anywhere on the network. It is also classified into three radio waves, microwave, and infrared waves.
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The document discusses wireless and mobile technology. It defines wireless as transferring information between devices without physical connection or wires. Not all wireless uses mobile technology. It describes different wireless network standards like 802.11ac, 802.11n operating in different frequency bands. Mobile refers to user and device portability to connect anywhere to a network. It provides examples of mobile vs wireless devices and discusses applications of mobile and wireless communications in areas like road traffic management, companies, government, healthcare, and more. It also covers wireless operating systems, languages, technologies and types of wireless systems.
Week1
This document provides an introduction to wireless communication and wireless application protocol (WAP). It discusses the benefits of wireless communication like freedom from wires and global coverage. It also covers some of the technical challenges in wireless communication like efficient use of spectrum, mobility support, and maintaining quality of service over unreliable links. It defines wireless communication and differentiates between wireless and mobile. It also describes various types of wireless technologies and their limitations.
Unit-1.pptx
- Wireless communication allows information to be transferred between points without wires. It has advantages like mobility but also disadvantages like security issues and interference.
- There are many different types of wireless systems including cellular networks, wireless LANs, satellite systems, paging systems, and Bluetooth. Requirements of wireless services include data rate, range, mobility, energy consumption, and quality of service.
- Key technical challenges in wireless communication include propagation effects, multipath, fading, interference, and limitations of spectrum and energy. Noise-limited systems require maintaining a minimum signal-to-noise ratio between transmitter and receiver.
4g wireless final ppt
The document discusses the evolution of wireless communication technologies from 1G to 4G. It provides an overview of cellular networks and wireless local area networks. The key aspects of 3G wireless systems are described, including services provided and issues. 4G wireless is characterized as providing high speeds, customized services, and support for multimedia. The technologies, hardware, services, and expected user segments of 4G are outlined. Comparisons are made between requirements and technologies of 3G and 4G wireless systems.
4g wireless final ppt
The document discusses the evolution of wireless communication technologies from 1G to 4G. It provides an overview of cellular networks and wireless local area networks. The key aspects of 3G and 4G wireless systems are summarized, including services, issues, hardware requirements and user expectations for 4G. 4G is described as providing higher speeds, bandwidth and customized services across a variety of access technologies compared to 3G.
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This document is the first chapter of a textbook on wireless communication networks and systems. It provides an overview of the history and development of wireless technology, from early inventions like the wireless telegraph to modern cellular networks and trends toward 5G networks and the Internet of Things. It also discusses some of the technical challenges of wireless communication like multipath fading and the need for modulation techniques and error control coding to overcome issues caused by the wireless channel.
901721_ch1.ppt
This document is the first chapter of a textbook on wireless communication networks and systems. It provides an overview of the history and development of wireless technologies from the invention of wireless telegraphy to modern cellular networks and trends toward 5G networks and the Internet of Things. It discusses some of the technical challenges of wireless communication like multipath fading and the need for error control coding and modulation techniques to overcome issues like interference and noise. It also notes political challenges in standardization and spectrum regulation.
Wireless communication
This document provides an overview of wireless communication. It discusses the basics of wireless communication including transmitting information using electromagnetic waves through open space. It also discusses the evolution of wireless networks from wired cables to current technologies like WiFi, Bluetooth, and GiFi. The document covers the advantages and disadvantages of wireless communication and compares different wireless technologies based on features like speed, range, and power consumption. Finally, it provides details on current wireless systems including cellular networks, wireless local area networks (WLANs), and satellite communication systems.
Client server system and remote connectivity
This document discusses various topics related to client-server systems and remote connectivity. It covers centralized and distributed processing models, the client-server model, wireless communication using radio frequencies, microwave and infrared transmission, virtual private networks (VPNs), and internetworking concepts such as routing. The key aspects are centralized processing occurring on mainframe servers, distributed processing with client computers doing most work, and the client-server model combining these approaches.
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Unguided Media
- 1. Our topic is Unguided Media Welcome to our presentation
- 2. • Member: ID: • Rafia islam 161-15-6945 • Amit kundu 161-15-7149 • Mehedul ahsan 161-15-7181 • Md. Shakil Mahmud 152-15-5573 Presenters
- 4. Electromagnetic spectrum range used for wireless communication Introduction
- 5. Ways Of Travelling: Propagation Modes
- 7. What is Radio Waves?
- 10. Disadvantages: Can’t send lot of data can travel long distances 01 01 Advantages:
- 12. What is Micro Waves?
- 14. Usages: Navigation Radar Microwave heat sources Mobile phones & Wifi 01 02 03 04
- 15. Dangers
- 17. WHAT IS INFRARED WAVE?
- 18. Usages: Remote control Data Communication Mouse , keyboard , printer 01 02 03
- 19. Advantage: Cheap Easy to use Compact and use low power Very high data rate 01 02 03 04