GlobalInvacom, a British company, invented the optical LNB and has since expanded its line of fibre optic products. They have introduced new versions of optical LNBs compatible with offset antennas as well as a system to transmit satellite and terrestrial signals over one optical cable. Most recently, GlobalInvacom developed an underground optical cable designed for burial and a housing that provides eight optical connections. The company continues to develop new solutions to expand the capabilities of its optical reception systems.
This document summarizes an optical LNB invented by Global Invacom. Some key points:
- An optical LNB converts satellite signals to a digital light signal and transmits it via fiber optic cable, avoiding signal loss issues with traditional coaxial cable.
- At the end of the fiber optic cable, a gateway termination unit (GTU) converts the light signal back to a format readable by satellite receivers.
- This allows for much more flexible distribution of satellite signals to multiple users without signal attenuation problems that plague traditional coaxial distribution methods.
- The optical LNB has significant potential to simplify installation of larger satellite reception systems serving multiple users.
The Ground Station Shenzhen TV, China document provides the following information in 3 sentences:
Shenzhen TV has constructed an impressive ground station in Shenzhen, China with 20 reception antennas and 6 transmission dishes to uplink their own programming directly from Shenzhen for the first time, in addition to receiving international satellite feeds. The station uses modern technology and has important devices installed in duplicate for backup. Shenzhen TV is preparing for further expansion of its satellite transmission capabilities from this new state-of-the-art facility.
The document provides an overview of a new optical LNB product from Global Invacom. Key points:
- An optical LNB converts satellite signals to digital signals and transmits them via fiber optic cable, eliminating issues with signal attenuation over long coaxial cable runs.
- It allows distribution of all satellite signals to an unlimited number of receivers independently via a single fiber cable.
- Global Invacom introduced a new flange model optical LNB for use with large prime focus antennas beyond 1.8m.
- Testing showed the optical LNB provided lossless signal transmission over fiber for distances of kilometers without attenuation. This improves reception especially for weak signals.
This document tests a C/Ku-band combination LNB (Combifeed) with an integrated DiSEqC switch that allows reception of both C-band and Ku-band signals from a single antenna. In initial tests, the Combifeed performed well, receiving numerous channels from satellites at various orbital positions in both C-band and Ku-band. Reception was tested on a 1.2-meter offset antenna, and the Combifeed was able to receive signals from satellites across Europe and South America, though reception from satellites at more distant orbital positions was more limited. The Combifeed shows potential to easily add C-band reception to existing Ku-band setups with a single, low-cost component
A BICMOS chipset for a DVB-H front-end receiverRFIC-IUMA
This document describes a BiCMOS chipset for a DVB-H front-end receiver implemented in a 0.35 μm BiCMOS process. Key components include a low noise amplifier (LNA) with a minimum gain of 13 dB and noise figure of 3 dB, a mixer with conversion gain of 10.7 dB and maximum noise figure of 22.5 dB, and a voltage controlled oscillator (VCO) that oscillates from 1085 MHz to 1766 MHz with a phase noise of -112 dBc/Hz. Measurement results show the LNA/mixer combination achieves a conversion gain of 28.5 dB and total noise figure of 8.4 dB. In addition, a synthesizer for the DVB
L'explication à propos du règlement sonoreLeSoir.be
1) The document describes the transition in broadcasting from peak level normalization to loudness normalization of audio levels. This change addresses the problem of jarring jumps in audio levels between programs and commercials.
2) EBU Recommendation R 128 establishes a method for measuring and specifying loudness levels throughout the broadcast chain to help ensure consistent loudness. It introduces descriptors for program loudness, loudness range, and true peak level.
3) Loudness normalization aims to harmonize loudness levels within and between channels for listener benefit, while still allowing artistic variation within programs. It helps eliminate compromises previously needed to avoid sounding softer than louder competitors.
The document provides information about in-plant training at Doordarshan. It discusses various components of the television production process including: [1] the TV studio with cameras, lighting, audio equipment and vision mixer; [2] the earth station that receives signals from satellites; and [3] TV transmitters and antennas that broadcast the signals. The document also summarizes the functions of different departments at Doordarshan like awareness, knowledge and entertainment and the hierarchy of production centers from national to regional to local levels.
Radionet Communications provides capabilities in land mobile radio systems including tuning, testing, and repairing subscriber units; programming units to work on federal and interoperability systems; and managing interoperability gateway deployments. They have experience programming units for conventional and trunked systems and deploying a regional interoperability system for the Navy Region Northeast. Radionet can also provide consulting services, perform radio frequency coverage simulations using open-source software, conduct system drive testing, and develop communications procedures and protocols.
This document summarizes an optical LNB invented by Global Invacom. Some key points:
- An optical LNB converts satellite signals to a digital light signal and transmits it via fiber optic cable, avoiding signal loss issues with traditional coaxial cable.
- At the end of the fiber optic cable, a gateway termination unit (GTU) converts the light signal back to a format readable by satellite receivers.
- This allows for much more flexible distribution of satellite signals to multiple users without signal attenuation problems that plague traditional coaxial distribution methods.
- The optical LNB has significant potential to simplify installation of larger satellite reception systems serving multiple users.
The Ground Station Shenzhen TV, China document provides the following information in 3 sentences:
Shenzhen TV has constructed an impressive ground station in Shenzhen, China with 20 reception antennas and 6 transmission dishes to uplink their own programming directly from Shenzhen for the first time, in addition to receiving international satellite feeds. The station uses modern technology and has important devices installed in duplicate for backup. Shenzhen TV is preparing for further expansion of its satellite transmission capabilities from this new state-of-the-art facility.
The document provides an overview of a new optical LNB product from Global Invacom. Key points:
- An optical LNB converts satellite signals to digital signals and transmits them via fiber optic cable, eliminating issues with signal attenuation over long coaxial cable runs.
- It allows distribution of all satellite signals to an unlimited number of receivers independently via a single fiber cable.
- Global Invacom introduced a new flange model optical LNB for use with large prime focus antennas beyond 1.8m.
- Testing showed the optical LNB provided lossless signal transmission over fiber for distances of kilometers without attenuation. This improves reception especially for weak signals.
This document tests a C/Ku-band combination LNB (Combifeed) with an integrated DiSEqC switch that allows reception of both C-band and Ku-band signals from a single antenna. In initial tests, the Combifeed performed well, receiving numerous channels from satellites at various orbital positions in both C-band and Ku-band. Reception was tested on a 1.2-meter offset antenna, and the Combifeed was able to receive signals from satellites across Europe and South America, though reception from satellites at more distant orbital positions was more limited. The Combifeed shows potential to easily add C-band reception to existing Ku-band setups with a single, low-cost component
A BICMOS chipset for a DVB-H front-end receiverRFIC-IUMA
This document describes a BiCMOS chipset for a DVB-H front-end receiver implemented in a 0.35 μm BiCMOS process. Key components include a low noise amplifier (LNA) with a minimum gain of 13 dB and noise figure of 3 dB, a mixer with conversion gain of 10.7 dB and maximum noise figure of 22.5 dB, and a voltage controlled oscillator (VCO) that oscillates from 1085 MHz to 1766 MHz with a phase noise of -112 dBc/Hz. Measurement results show the LNA/mixer combination achieves a conversion gain of 28.5 dB and total noise figure of 8.4 dB. In addition, a synthesizer for the DVB
L'explication à propos du règlement sonoreLeSoir.be
1) The document describes the transition in broadcasting from peak level normalization to loudness normalization of audio levels. This change addresses the problem of jarring jumps in audio levels between programs and commercials.
2) EBU Recommendation R 128 establishes a method for measuring and specifying loudness levels throughout the broadcast chain to help ensure consistent loudness. It introduces descriptors for program loudness, loudness range, and true peak level.
3) Loudness normalization aims to harmonize loudness levels within and between channels for listener benefit, while still allowing artistic variation within programs. It helps eliminate compromises previously needed to avoid sounding softer than louder competitors.
The document provides information about in-plant training at Doordarshan. It discusses various components of the television production process including: [1] the TV studio with cameras, lighting, audio equipment and vision mixer; [2] the earth station that receives signals from satellites; and [3] TV transmitters and antennas that broadcast the signals. The document also summarizes the functions of different departments at Doordarshan like awareness, knowledge and entertainment and the hierarchy of production centers from national to regional to local levels.
Radionet Communications provides capabilities in land mobile radio systems including tuning, testing, and repairing subscriber units; programming units to work on federal and interoperability systems; and managing interoperability gateway deployments. They have experience programming units for conventional and trunked systems and deploying a regional interoperability system for the Navy Region Northeast. Radionet can also provide consulting services, perform radio frequency coverage simulations using open-source software, conduct system drive testing, and develop communications procedures and protocols.
This document discusses satellite network access points (SNAP) and ways to optimize satellite bandwidth usage and reduce costs. It provides examples showing how statistical multiplexing, compression, caching, and aggregation of users and services can lower the bandwidth and costs needed for satellite transmission compared to individual satellite connections. Community-based solutions that combine technologies like SNAP are presented as more efficient approaches than individual satellite networks.
The document provides an overview of ATSC Mobile TV and how it works. It discusses the challenges of mitigating mobile fading and maintaining backward compatibility with legacy receivers. It introduces the dual stream system used by ATSC Mobile TV to transmit an HDTV/SDTV stream and a separate mobile stream. It describes the cross-layer design of ATSC Mobile TV, which uses new channel coding, training signals, and signaling to address mobile fading while maintaining compatibility. It also outlines the basic blocks of the ATSC Mobile TV transmitter and receiver.
Improvement of Phase Noise Compensation for Coherent OpticalOFDM via Data Ai...Raj Kumar Parihar
This document discusses using a data-aided phase equalizer (DAPE) to improve phase noise compensation in coherent optical orthogonal frequency-division multiplexing (OFDM) systems. DAPE utilizes both pilot symbols and receiver decisions to estimate channel factors and phase noise on a symbol-by-symbol basis. Simulation results show DAPE achieves a bit error rate of 10^-3 with 1-2.2 dB less required RF-pilot power compared to using RF pilots alone after 2000km fiber transmission at 40Gb/s. DAPE provides more accurate phase noise estimation, particularly for noisier scenarios, by averaging estimates across subcarriers.
WaveArt Tutorial on FM Synchronized Emissions (Isofrequency - Isomodulation -...Roberto Valentin
This document provides information on synchronized FM emissions (Isofrequency-Isomodulation-SFN). It discusses the benefits of this technology, including lower protection ratios and more efficient use of spectrum. It then details the requirements for synchronized FM emissions, including transmitting the same identical modulation content with precise delay compensation. Test results show significantly better protection ratios can be achieved with a digital implementation compared to older analog methods. Various implementation examples are discussed, outlining how delay differences impact required protection ratios. The document also notes additional benefits of the WaveArt-ABE digital solution for signal backhauling.
The PAU instrument is aboard the INTA MicroSat-1 satellite to demonstrate using GNSS reflectometry to correct for sea state effects in L-band radiometry. The PAU combines a radiometer, GPS reflectometer, and IR radiometer. It measures brightness temperature, sea state from delay Doppler maps of reflected GPS signals, and SST. Preliminary tests of the engineering model show it can acquire GPS signals and produce delay Doppler maps. The mission aims to relate brightness temperature changes to variations in sea state measurements.
The document tests and evaluates LNBs from GT-SAT International's Diamond Line series. Measurement results show the Diamond Line LNBs provide significantly stronger output power than a reference LNB, compensating for signal attenuation over 30-50 meters of coax cable. Noise performance tests find the Diamond Line models are equal to or better than the reference LNB. The increased output power is achieved without degradation of noise performance. Current consumption is slightly higher for the high-power Diamond Line LNBs but expected given their capabilities. Overall, the Diamond Line LNBs perform well in output power and noise tests, making them suitable for difficult signal reception areas.
The document summarizes a presentation on light fields and the Wigner distribution function. It begins with introducing traditional light fields and their limitations in modeling diffraction and interference effects. It then describes how augmenting light fields can address these limitations by incorporating wave optics concepts like the Wigner distribution function. The presentation provides examples of how augmented light fields can model interference patterns from experiments like Young's double slit experiment. It concludes by discussing properties of the Wigner distribution function and how it relates to modeling light fields.
The document is a project report on the television system. It discusses fundamentals of monochrome and color TV systems including picture formation, number of TV lines per frame, resolution, brightness, contrast, and color composite video signals. It also covers color television topics such as additive color mixing, color difference signals, bandwidth requirements, color carrier modulation, and chroma vectors. Finally, it discusses the PAL color encoding system, audio video chains in TV stations, and DTH broadcasting including downlink and uplink chains.
Light Field: New opportunities and applicationsSe Baek Oh
The document summarizes a presentation on light fields in ray and wave optics. It discusses light field theory and how light fields can be used to understand wave phenomena. Various techniques are covered, including augmented light fields, wavefront coding, holography, rendering, and point spread functions like the double helix PSF. Applications include 3D imaging, optical design, and developing new imaging systems and technologies. Overall the presentation explores the power of light fields for understanding optics and enabling new opportunities.
- The document discusses a new satellite TV technology called "Unicable" that allows multiple satellite receivers to be connected to a single LNB using digital signals rather than separate cables running to each receiver.
- It describes testing done on an MTI AK541-XT2BL Unicable LNB that can support four receivers. Testers were able to easily receive channels on all receivers simultaneously without interference.
- Reception quality was found to be good, even for weaker satellites. Unicable was found to be no more sensitive to cable quality than previous satellite TV technologies. However, the technology is still new and not yet supported by many receiver manufacturers.
RF and Mixed Signal Circuits for a DVB-H ReceiverRFIC-IUMA
This document presents the design of RF and mixed signal circuits for a DVB-H receiver. It describes the low noise amplifier, mixer, synthesizer, and ADC circuits. The LNA uses a cascode configuration to achieve low power and noise with wide bandwidth. The mixer uses a Gilbert cell. The VCO employs techniques like emitter degeneration and capacitor divider to improve phase noise and amplitude. Two ADC structures are presented, including a delta sigma ADC. Measurements and simulations show the circuits meet requirements for a DVB-H receiver in terms of frequency range, sensitivity, noise figure, linearity, phase noise, gain and dynamic range.
This project aims to design and develop a multi-format video converter to convert analog video signals from target detection systems to digital formats for transmission to and processing by computing devices. The converter will convert analog video signals to compressed digital formats and transfer the data over USB or Ethernet ports. The development of this converter is motivated by the benefits of digital signal transmission, storage, and processing compared to analog.
This document contains questions and answers related to television fundamentals. It covers topics like the functions of camera tubes, aspect ratio, luminance, illuminance, characteristics of the human eye, necessity of scanning in television systems, flicker, interlaced scanning, vertical and horizontal resolutions, composite video signals, pedestals, blanking pulses, and more. The document is divided into multiple units covering topics such as monochrome and color camera tubes, transmission and reception, color television systems, and more.
Maduf04 Multi Antenna Dvb H Receiver Andy De Wildeimec.archive
This document summarizes research on the impact of using a dual-antenna receiver for DVB-H reception. It outlines that a system model was developed in Matlab to simulate a standard compliant DVB-H system with a dual antenna receiver using maximum ratio combining. The simulation found the dual antenna receiver provided approximately 4dB better reception performance than a single antenna receiver, though with a 7-10% increase in power consumption for the additional antenna circuitry. Mobility up to 120km/h resulted in a 1.5dB loss in performance compared to a static channel.
The LNB (low noise block) is a key component of a satellite dish that collects and processes weak satellite signals. It contains electronic components that convert the signals to a lower frequency and amplify them for transmission to receivers via coaxial cable. LNBs are designed for specific frequency bands and polarizations. A universal LNB can receive both horizontal and vertical polarizations in the Ku band through voltage switching. Different LNB types support varying numbers of receivers and satellites through features like DiSEqC switching and multifeed designs.
This document discusses enhancements to the physical layer of LTE-Advanced (3GPP Release 10). It describes the downlink and uplink physical layer designs, including orthogonal multiple access schemes, reference signals, control signaling, and data transmission methods. It also covers support for time division duplexing, half-duplex frequency division duplexing, and UE categories defined in 3GPP Release 8. The goal of LTE-Advanced is to further improve the LTE standard to meet the requirements of IMT-Advanced.
Modelling, Simulation and Analysis of a Low-Noise Block Converter (LNBC) Used...Onyebuchi nosiri
Abstract— Modelling, Simulation and analysis of Low Noise Block Converter(LNBC) used for Communication Satellite reception using MATLAB is a work that tends to use some aspect of Computer Engineering tools to realise LNBC fundamentals where Channels programming sources provided programming for Broadcasting , the method involves using MATLAB to illustrate how microwave frequencies receives from Satellite are documented to lower block and range of frequencies, analysis of various LNBC was carried out with a view to drawing comparison between various signals, a test of faulty LNBC was carried out with LNBC schematics, simulation result were provided to show various responses with regards Modelling input waveguide signal, corrupted signal, filtered signal, modulated signal and recovered signals.
Discusses basic television broadcasting system and standards. Explains TV transmission principles used in Broadcasting. Modulation type and advantage of negative modulation. Explains VSB modulation in TV transmitters.
The document describes a simulation project for a communication link using AM and PSK modulation. Students are asked to design and simulate a communication link using AM modulation to transmit an audio signal, investigating the effects of different message signal frequencies and modulation indices. They also simulate communication links using BPSK and QPSK modulation schemes, comparing the performance of each in terms of bandwidth efficiency and required signal power. The project uses Matlab and Simulink to generate signals, design modulators and demodulators, and simulate the overall communication links.
The document tests a new optical LNB developed by Global Invacom that transmits satellite signals over optical fiber with almost no signal loss over long distances. Representatives from Global Invacom installed one of their prototype optical LNBs at the TELE-satellite Test Center in Austria and found that the signal quality was better than a standard LNB, with signal levels that were stronger and transponders that were more clearly defined. The optical LNB can split the signal to feed up to 16 satellite receivers, offering a simple way to distribute satellite signals without signal degradation.
GlobalInvacom adds terrestrial TV (DTT) signals to its fibre optic distribution system using new optical-to-RF converters. Testing showed the GTU converters transmitted DTT signals with nearly no degradation in signal quality over fibre. Both the QUAD GTU and QUATRO GTU performed excellently, maintaining high signal power and quality even when transmitting satellite and terrestrial signals simultaneously over long distances.
This document provides a summary of fibre optic installation materials from GlobalInvacom. It discusses fibre optic LNB technology as an alternative to coaxial cable for satellite signal distribution. Key products highlighted include fibre optic connectors, attenuators, cleaning supplies, and a fibre optic microscope. The microscope allows installers to inspect fibre ends and connections for flaws before system activation. Overall the document promotes GlobalInvacom's line of accessories for professional fibre optic installations.
This document discusses satellite network access points (SNAP) and ways to optimize satellite bandwidth usage and reduce costs. It provides examples showing how statistical multiplexing, compression, caching, and aggregation of users and services can lower the bandwidth and costs needed for satellite transmission compared to individual satellite connections. Community-based solutions that combine technologies like SNAP are presented as more efficient approaches than individual satellite networks.
The document provides an overview of ATSC Mobile TV and how it works. It discusses the challenges of mitigating mobile fading and maintaining backward compatibility with legacy receivers. It introduces the dual stream system used by ATSC Mobile TV to transmit an HDTV/SDTV stream and a separate mobile stream. It describes the cross-layer design of ATSC Mobile TV, which uses new channel coding, training signals, and signaling to address mobile fading while maintaining compatibility. It also outlines the basic blocks of the ATSC Mobile TV transmitter and receiver.
Improvement of Phase Noise Compensation for Coherent OpticalOFDM via Data Ai...Raj Kumar Parihar
This document discusses using a data-aided phase equalizer (DAPE) to improve phase noise compensation in coherent optical orthogonal frequency-division multiplexing (OFDM) systems. DAPE utilizes both pilot symbols and receiver decisions to estimate channel factors and phase noise on a symbol-by-symbol basis. Simulation results show DAPE achieves a bit error rate of 10^-3 with 1-2.2 dB less required RF-pilot power compared to using RF pilots alone after 2000km fiber transmission at 40Gb/s. DAPE provides more accurate phase noise estimation, particularly for noisier scenarios, by averaging estimates across subcarriers.
WaveArt Tutorial on FM Synchronized Emissions (Isofrequency - Isomodulation -...Roberto Valentin
This document provides information on synchronized FM emissions (Isofrequency-Isomodulation-SFN). It discusses the benefits of this technology, including lower protection ratios and more efficient use of spectrum. It then details the requirements for synchronized FM emissions, including transmitting the same identical modulation content with precise delay compensation. Test results show significantly better protection ratios can be achieved with a digital implementation compared to older analog methods. Various implementation examples are discussed, outlining how delay differences impact required protection ratios. The document also notes additional benefits of the WaveArt-ABE digital solution for signal backhauling.
The PAU instrument is aboard the INTA MicroSat-1 satellite to demonstrate using GNSS reflectometry to correct for sea state effects in L-band radiometry. The PAU combines a radiometer, GPS reflectometer, and IR radiometer. It measures brightness temperature, sea state from delay Doppler maps of reflected GPS signals, and SST. Preliminary tests of the engineering model show it can acquire GPS signals and produce delay Doppler maps. The mission aims to relate brightness temperature changes to variations in sea state measurements.
The document tests and evaluates LNBs from GT-SAT International's Diamond Line series. Measurement results show the Diamond Line LNBs provide significantly stronger output power than a reference LNB, compensating for signal attenuation over 30-50 meters of coax cable. Noise performance tests find the Diamond Line models are equal to or better than the reference LNB. The increased output power is achieved without degradation of noise performance. Current consumption is slightly higher for the high-power Diamond Line LNBs but expected given their capabilities. Overall, the Diamond Line LNBs perform well in output power and noise tests, making them suitable for difficult signal reception areas.
The document summarizes a presentation on light fields and the Wigner distribution function. It begins with introducing traditional light fields and their limitations in modeling diffraction and interference effects. It then describes how augmenting light fields can address these limitations by incorporating wave optics concepts like the Wigner distribution function. The presentation provides examples of how augmented light fields can model interference patterns from experiments like Young's double slit experiment. It concludes by discussing properties of the Wigner distribution function and how it relates to modeling light fields.
The document is a project report on the television system. It discusses fundamentals of monochrome and color TV systems including picture formation, number of TV lines per frame, resolution, brightness, contrast, and color composite video signals. It also covers color television topics such as additive color mixing, color difference signals, bandwidth requirements, color carrier modulation, and chroma vectors. Finally, it discusses the PAL color encoding system, audio video chains in TV stations, and DTH broadcasting including downlink and uplink chains.
Light Field: New opportunities and applicationsSe Baek Oh
The document summarizes a presentation on light fields in ray and wave optics. It discusses light field theory and how light fields can be used to understand wave phenomena. Various techniques are covered, including augmented light fields, wavefront coding, holography, rendering, and point spread functions like the double helix PSF. Applications include 3D imaging, optical design, and developing new imaging systems and technologies. Overall the presentation explores the power of light fields for understanding optics and enabling new opportunities.
- The document discusses a new satellite TV technology called "Unicable" that allows multiple satellite receivers to be connected to a single LNB using digital signals rather than separate cables running to each receiver.
- It describes testing done on an MTI AK541-XT2BL Unicable LNB that can support four receivers. Testers were able to easily receive channels on all receivers simultaneously without interference.
- Reception quality was found to be good, even for weaker satellites. Unicable was found to be no more sensitive to cable quality than previous satellite TV technologies. However, the technology is still new and not yet supported by many receiver manufacturers.
RF and Mixed Signal Circuits for a DVB-H ReceiverRFIC-IUMA
This document presents the design of RF and mixed signal circuits for a DVB-H receiver. It describes the low noise amplifier, mixer, synthesizer, and ADC circuits. The LNA uses a cascode configuration to achieve low power and noise with wide bandwidth. The mixer uses a Gilbert cell. The VCO employs techniques like emitter degeneration and capacitor divider to improve phase noise and amplitude. Two ADC structures are presented, including a delta sigma ADC. Measurements and simulations show the circuits meet requirements for a DVB-H receiver in terms of frequency range, sensitivity, noise figure, linearity, phase noise, gain and dynamic range.
This project aims to design and develop a multi-format video converter to convert analog video signals from target detection systems to digital formats for transmission to and processing by computing devices. The converter will convert analog video signals to compressed digital formats and transfer the data over USB or Ethernet ports. The development of this converter is motivated by the benefits of digital signal transmission, storage, and processing compared to analog.
This document contains questions and answers related to television fundamentals. It covers topics like the functions of camera tubes, aspect ratio, luminance, illuminance, characteristics of the human eye, necessity of scanning in television systems, flicker, interlaced scanning, vertical and horizontal resolutions, composite video signals, pedestals, blanking pulses, and more. The document is divided into multiple units covering topics such as monochrome and color camera tubes, transmission and reception, color television systems, and more.
Maduf04 Multi Antenna Dvb H Receiver Andy De Wildeimec.archive
This document summarizes research on the impact of using a dual-antenna receiver for DVB-H reception. It outlines that a system model was developed in Matlab to simulate a standard compliant DVB-H system with a dual antenna receiver using maximum ratio combining. The simulation found the dual antenna receiver provided approximately 4dB better reception performance than a single antenna receiver, though with a 7-10% increase in power consumption for the additional antenna circuitry. Mobility up to 120km/h resulted in a 1.5dB loss in performance compared to a static channel.
The LNB (low noise block) is a key component of a satellite dish that collects and processes weak satellite signals. It contains electronic components that convert the signals to a lower frequency and amplify them for transmission to receivers via coaxial cable. LNBs are designed for specific frequency bands and polarizations. A universal LNB can receive both horizontal and vertical polarizations in the Ku band through voltage switching. Different LNB types support varying numbers of receivers and satellites through features like DiSEqC switching and multifeed designs.
This document discusses enhancements to the physical layer of LTE-Advanced (3GPP Release 10). It describes the downlink and uplink physical layer designs, including orthogonal multiple access schemes, reference signals, control signaling, and data transmission methods. It also covers support for time division duplexing, half-duplex frequency division duplexing, and UE categories defined in 3GPP Release 8. The goal of LTE-Advanced is to further improve the LTE standard to meet the requirements of IMT-Advanced.
Modelling, Simulation and Analysis of a Low-Noise Block Converter (LNBC) Used...Onyebuchi nosiri
Abstract— Modelling, Simulation and analysis of Low Noise Block Converter(LNBC) used for Communication Satellite reception using MATLAB is a work that tends to use some aspect of Computer Engineering tools to realise LNBC fundamentals where Channels programming sources provided programming for Broadcasting , the method involves using MATLAB to illustrate how microwave frequencies receives from Satellite are documented to lower block and range of frequencies, analysis of various LNBC was carried out with a view to drawing comparison between various signals, a test of faulty LNBC was carried out with LNBC schematics, simulation result were provided to show various responses with regards Modelling input waveguide signal, corrupted signal, filtered signal, modulated signal and recovered signals.
Discusses basic television broadcasting system and standards. Explains TV transmission principles used in Broadcasting. Modulation type and advantage of negative modulation. Explains VSB modulation in TV transmitters.
The document describes a simulation project for a communication link using AM and PSK modulation. Students are asked to design and simulate a communication link using AM modulation to transmit an audio signal, investigating the effects of different message signal frequencies and modulation indices. They also simulate communication links using BPSK and QPSK modulation schemes, comparing the performance of each in terms of bandwidth efficiency and required signal power. The project uses Matlab and Simulink to generate signals, design modulators and demodulators, and simulate the overall communication links.
The document tests a new optical LNB developed by Global Invacom that transmits satellite signals over optical fiber with almost no signal loss over long distances. Representatives from Global Invacom installed one of their prototype optical LNBs at the TELE-satellite Test Center in Austria and found that the signal quality was better than a standard LNB, with signal levels that were stronger and transponders that were more clearly defined. The optical LNB can split the signal to feed up to 16 satellite receivers, offering a simple way to distribute satellite signals without signal degradation.
GlobalInvacom adds terrestrial TV (DTT) signals to its fibre optic distribution system using new optical-to-RF converters. Testing showed the GTU converters transmitted DTT signals with nearly no degradation in signal quality over fibre. Both the QUAD GTU and QUATRO GTU performed excellently, maintaining high signal power and quality even when transmitting satellite and terrestrial signals simultaneously over long distances.
This document provides a summary of fibre optic installation materials from GlobalInvacom. It discusses fibre optic LNB technology as an alternative to coaxial cable for satellite signal distribution. Key products highlighted include fibre optic connectors, attenuators, cleaning supplies, and a fibre optic microscope. The microscope allows installers to inspect fibre ends and connections for flaws before system activation. Overall the document promotes GlobalInvacom's line of accessories for professional fibre optic installations.
The document tests and summarizes Huber+Suhner's CLIK! fiber optic distribution system. It found that the system:
- Distributes full satellite signals to multiple receivers through low-loss fiber optic cables and splitters.
- Is easy to configure and connect through snap-in connectors labeled for each port.
- Maintains a perfect signal level and quality to all connected receivers.
Global Invacom has developed a fibre optic distribution system for satellite signals that overcomes the limitations of traditional coaxial cable systems. The system uses an innovative FibreIRS LNBm that stacks multiple satellite bands and polarizations into a single combined signal output. This signal is then converted to light and transmitted over fibre optic cables with minimal loss. TELE-satellite tested the full system and found that it was able to deliver satellite signals to receivers with similar quality to traditional coaxial systems, even over 300 meters of cable and through two optical splitters. The fibre optic system allows for easily building very large distribution networks without concerns about signal attenuation.
The document discusses a fibre optic distribution system for satellite signals from Global Invacom. It allows for:
1) A lossless distribution of satellite signals over long distances and to many outlets without degrading signal quality.
2) Distribution of both satellite bands and polarizations over a single cable.
3) An easy to install system due to smart connectors, and cable length is not critical to performance.
The document discusses satellite reception in the Ka-band frequency range and provides an update on developments. It acknowledges mistakes made in a previous issue by showing incorrect satellite spectra. The text then provides the correct Ku-band and Ka-band spectra for various satellites and notes that only one consumer LNB is currently available for the Ka-band. It reports that some success has been achieved receiving signals from African providers via Eutelsat satellites, but that low symbol rates and scarce Ka-band LNBs present challenges. The Ka-band remains an interesting new area for satellite enthusiasts to explore.
The OptiScan is Global Invacom's new satellite signal analyzer that is the first to support both coaxial and optical signal inputs. It provides real-time spectrum analysis, signal level measurements, and error rate testing for installers. The compact, lightweight design allows for use in attics or outdoors. Installers can use the OptiScan to accurately align dishes to satellites and troubleshoot signal issues.
This document summarizes the evolution of low-cost construction using surplus satellite TV LNBs (low noise block downconverters). It begins with an introduction to the author's history with analog satellite TV and fascination with stripping down LNBs. It then provides a detailed overview of the technology and design of early single-output Ku-band LNBs from the 1990s, followed by early dual-output and current single-output extended band LNB designs. The document concludes by listing 10 potential reuses for spare or unwanted LNBs, such as using their GaAsFETs and MMICs for microwave circuits, or converting them for use as antennas, amplifiers, or frequency converters.
This document appears to be the cover of issue #212 of the magazine TELE-satellite. It provides information about the magazine such as the cover date of 08-09/2009 and languages it is published in. It also advertises some of the articles in the issue such as one on a resourceful satellite handyman from Beijing and another on a new generation of optical LNBs that will revolutionize the satellite world.
1. The document discusses receiving satellite signals in the Ka-band (26.5-40 GHz) in Europe using inexpensive options like an LNB for an Irish TV provider or a DirecTV SL3 LNB.
2. Testing was done with these LNBs in Portugal, with the Irish LNB only finding signals at 13.0E and 9.0E for internet services, while the complex DirecTV SL3 LNB had issues working with motorized dishes due to its weight.
3. Ka-band signals use small spot beams and modulations unsuitable for typical receivers, and expansion of services is expected, though the testing found no additional usable signals.
The document tests and evaluates the Jiuzhou JQA1P Monoblock Quad LNBF. It finds that the LNBF can receive signals from 2 satellites, ASTRA and HOTBIRD, and distribute them to 4 receivers. Output power and signal-to-noise ratio measurements show the LNBF performance is close to a high-quality single LNB, with noise figure of 0.3 dB and negligible differences between the 4 outputs. The document concludes the LNBF is a practical solution for receiving multiple satellites and distributing to multiple rooms.
The document summarizes the assembly and testing of the InfoSat V055 1.65m aluminum mesh satellite dish. It has a lightweight construction that is easy to assemble without instructions. Reception tests in C-band were very strong from BADR-C at 26 degrees east, with signal strengths over 84dBμV. Reception in Ku-band and from lower elevation satellites was possible but with reduced signal quality compared to a solid dish. The conclusion is that the V055 performs well for its intended purpose as a fixed dish for high-power C-band reception.
Realization of Dual-Dipole-Antenna System for Concurrent Dual-Radio Operation...Saou-Wen Su
The document proposes a dual-dipole-antenna system for concurrent dual-radio operation at 2.4 GHz and 5 GHz bands. It first studies the mutual coupling between two dipole antennas and finds good isolation when the antennas are orthogonal in polarization. Based on this, the design places a 2.4 GHz dipole perpendicular to a 5 GHz dipole on a two-layer substrate. Simulations show the antennas, stacked just 0.8 mm apart, achieve over 15 dB isolation across bands. Measurements of a prototype confirm bandwidth and radiation pattern specifications for both WiFi standards are met while maintaining low coupling between closely packed antennas.
Satellite signals are weak by the time they reach the ground due to signal attenuation over the long distance from the satellite in geostationary orbit. A low noise amplifier (LNA) is used to amplify the weak satellite signals received by the dish antenna without adding significant noise. The LNA and block converter that downconverts the microwave frequencies to intermediate frequencies together make up the low noise block downconverter (LNB). LNBs use local oscillators and mixers to convert signals to intermediate frequencies accepted by satellite receivers. Noise performance and local oscillator frequencies vary between LNBs used for different satellite frequency bands.
The document tests and reviews the Titanium Satellite C1W-PLL LNBF. It was tested on an offset dish in southern France and found to have excellent reception quality, with a gain of up to 6.2 dBμV. The C1W-PLL uses PLL technology to provide a very stable signal lock, even for difficult signals like low symbol rates or high FEC carriers. It is recommended as a best bargain for C-band enthusiasts due to its high performance and low price.
The document discusses the purpose of the two LNB jacks that are commonly found on satellite receivers. The IF INPUT jack is used to directly connect the receiver to the LNB from the satellite dish. The LOOP output jack allows a second receiver to be connected, so that both receivers can access the satellite signal from the single LNB connection. This setup allows multiple receivers to be daisy chained together to mutually operate and share the satellite signal from a single dish/LNB installation.
This document is the October/November 2010 issue of TELE-satellite Magazine. It includes the following articles:
1) The cover story discusses how IPTV is ushering in a new era where anyone can become their own programming provider by transmitting TV channels over the internet without the need for expensive reception equipment like satellites dishes or cable boxes.
2) Other articles profile companies in the satellite industry like power supply manufacturer SPAUN, satellite distributor AZBox, and wireless card reader producer SMARTWi.
3) Product reviews of IPTV gateways, offset satellite dishes, antenna alignment meters, and LNBFs.
4) Sections on satellite news, the satellite DXing hobby, digital TV
This document provides a test report of SPAUN's SUS 5581/33 NF satellite distribution system. The key points are:
1) The SUS 5581/33 NF system can connect up to 9 satellite receivers to a single coaxial cable using SCR (Satellite Channel Router) technology.
2) It allows both serial and tree configurations. Terrestrial signals can also be included for combined satellite and terrestrial distribution.
3) Test results showed the system distributed signals reliably over 150 meters of cable with minimal signal loss. Receivers were able to lock onto signals without issues.
4) The system provides a simple and cost-effective way to distribute satellite signals throughout a home or building to take advantage
This document provides a test report of SPAUN's SUS 5581/33 NF satellite distribution system. The key points are:
1. The system can distribute satellite signals from a quad or quattro LNB to up to 9 satellite receivers connected to differently specified wall sockets.
2. It uses SCR (Satellite Channel Router) technology to allow each receiver to tune different satellites/channels independently over a single coaxial cable.
3. The system was tested and found to work well, with wall socket losses and tap losses within specifications. It provides flexibility in configuration and easy installation.
The document tests and reviews the Moi Plus streaming box by TBS, which acts as a central DVB receiver that can distribute TV and radio signals via a home network to multiple devices. Key features include its small size, ability to be located remotely from TVs, support for wireless and wired networking, and integration of tuners. It comes preinstalled with the Tvheadend software, which allows automatic channel scanning, creation of customized channel lists for each user, electronic program guide functionality, and recording of content to external USB drives connected to the Moi Plus box. The review concludes the Moi Plus and Tvheadend together provide a versatile whole-home digital TV solution.
The Tekniksat optical distribution system can deliver 4 satellite signals and 1 terrestrial signal to hundreds of receivers with equal signal quality at all outputs. It uses an optical transmitter to convert the signals to a single optical signal, an optical splitter to divide the signal, and an optical multiswitch to convert it back and distribute to subscribers. Testing showed the system maintained sufficient gain and only minimally impacted signal quality even when splitting the signal across 320 receivers. It is recommended for efficiently distributing signals to a large number of subscribers.
The document reviews the Satlink WS6979HD signal analyzer. It has a high-resolution screen, HDMI output, long battery life, and supports DVB-S2 and DVB-T2. The device has comprehensive measurement and analysis functions for satellite and terrestrial signals. It also functions much like a standard satellite receiver, with features like an editable channel list and electronic program guide. Overall, the Satlink WS6979HD is a fully-featured, high-quality signal meter suitable for both professional and amateur use.
The document summarizes a mobile app called Satbeams that helps users align satellite dishes. It allows users to check if a satellite is receivable at their location and see satellite footprints offline. The app displays satellites on a virtual sky and calculates azimuth and elevation. It relies on an extensive satellite database but lacks daily frequency lists. Overall, the app provides a valuable tool for easily determining satellite reception and positioning dishes.
The document discusses the Logitech Harmony Smart Control system, which allows a smartphone or tablet to replace all original remote controls. It utilizes a hub connected to devices via infrared and Bluetooth. The hub also connects to the local WiFi network to handle commands from the Harmony app. The app can control up to eight devices at once and remembers pre-programmed command sequences. Gestures on the app allow for easy control of functions like volume. The system was able to successfully control all devices tested, including receivers, Blu-Ray players, an Apple TV, and gaming consoles.
Jim Edstein operates a large satellite reception system from the remote mountains of Taiwan to provide streaming services around the world. He first set up systems for expats to watch channels from home, then began streaming channels over the Internet in 2006. With fast, unlimited fiber Internet access in his area, he is now able to stream over 1000 TB of data per month to 90 point-to-point customers and host equipment for 7 additional customers. Operating from a small town in Taiwan, he distributes international TV channels globally via Internet streaming.
TELE-audiovision is a digital TV industry publication established in 1981 that is headquartered in Munich, Germany. It is published by TELE-audiovision Magazine GmbH and edited by Alexander Wiese. The publication has a readership of over 350,000 digital TV professionals worldwide. The current issue discusses the shift from coaxial cable to fiber optic technology for satellite signal distribution. Fiber optic distribution eliminates limitations of cable length and number of distribution points. It also means each user has access to the full satellite bandwidth at all times. The editor notes that while coaxial cable faces issues like signal attenuation related to frequency, fiber optic technology is not impacted by these factors.
The document discusses a DekTec DTA-2115 PCI Express card that can generate test signals for terrestrial, cable, and satellite receivers using a single PC card. It has an extremely wide frequency range from 32 MHz to 2186 MHz and supports virtually all digital modulation standards. This makes it very useful for testing receivers and troubleshooting reception issues. The card's software allows the user to adjust various signal parameters like modulation, frequency, error injection and signal quality to simulate real-world conditions.
The document provides a review of the SATFINDER 5 HD Slim handheld satellite meter from Alpsat Elektronik. It is small, lightweight device that features a high-resolution color display, integrated battery, and ability to simultaneously measure up to four transponders. The meter has a comprehensive pre-programmed database of satellites, transponders and channels. It allows for fine-tuning of dish alignment through features like cross-polarization measurement and constellation diagrams. The review concludes the SATFINDER 5 HD Slim is an extremely responsive meter for evaluating satellite signals.
The document is the May-June 2015 issue of TELE-audiovision Magazine, the world's leading digital TV industry publication. The issue includes test reports on new satellite equipment from companies like TEKNIKSAT, SATLINK, TENOW, and SATBEAMS. It also features articles on the growing use of fibre-optic technology for signal distribution, a profile of a Taiwanese satellite enthusiast, an overview of notable satellite uplink stations, and the history of TELE-audiovision magazine.
The document describes the Spaun Sparos 711 professional meter for digital TV. It has a 10-inch touchscreen with high resolution and is optimized for antenna installers and technicians. The meter has a rugged metal case and offers simultaneous measurements of transponder signals. It can measure DVB formats along with ASI, HDMI and other connectivity. The large touchscreen and intuitive interface make it easy to use right out of the box. An included transport case presents a professional image for installers.
The document tests and reviews the MKTech CB200 HD dual tuner meter. It is a small, lightweight, and easy to use meter that allows installers to simultaneously monitor signals and parameters for two different inputs. It has a clear LCD screen, intuitive interface, built-in database of satellites and transponders, and features like automatic satellite detection that make it suitable for professional installation and troubleshooting tasks. The review finds that while small in size, the meter has strong performance and many useful features for installers.
1) Haenlein Software develops and sells PVR software that allows users to record and edit digital TV programs and easily transfer recordings between different receivers.
2) Started in 1999 as a side project, Haenlein Software is now the owner's full-time business, employing 3 people working from home.
3) Their software works with over 800 different receiver models, has been translated into many languages, and is sold internationally through distributors and partnerships with receiver manufacturers.
1. GlobalInvacom's FibreIRS family improves satellite signal distribution using fiber optic cables instead of coaxial cables, allowing signal splitting and longer cable runs with minimal loss.
2. The new FibreIRS O2E optical-to-electrical converter, combined with the FibreIRS ODU optical amplifier, can regenerate and amplify signals after splitting, improving signal quality beyond the original source.
3. In tests, the combination of FibreIRS O2E and ODU provided amplification to restore signal strength after splitting 32 ways, while further improving modulation error ratio, demonstrating its ability to multiply outputs from a single LNB while enhancing signal quality.
The Formuler F1 is a triple-tuner HD receiver that provides fast channel changing and search functions. It can be installed with various operating systems, including OpenPLI, OpenATV, and HDMU. The receiver features a versatile channel search, excellent electronic program guide, and the ability to record multiple channels simultaneously. Overall, the Formuler F1 delivers speed and a fun user experience, as its name and F1 designation would suggest.
The document provides a test report of the Fernsehfee 2.0, an intelligent TV receiver developed by TC Unterhaltungselektronik AG for German-speaking markets. Some key features of the Fernsehfee 2.0 include an ad blocker, optimized program guide for German channels, recording function, and built-in WiFi for connecting to networks. It also functions as a web TV box thanks to its Android operating system. The Fernsehfee 2.0 learns users' viewing preferences through an account system and recommends content it thinks they will enjoy based on ratings and past viewing behavior.
EICO is an antenna wholesaler and retailer located in Reykjavik, Iceland that has been in business since 1979. It sells over 400 satellite dishes per year, with 85cm dishes being the most popular for receiving signals from ASTRA. EICO also distributes signals using GlobalInvacom's fiber-optic system to over 100 apartments. While EICO previously installed MMDS systems, that technology is expected to be discontinued in Iceland. Overall, EICO remains at the forefront of technology for receiving TV signals in Iceland.
This document provides information about TELE-audiovision Magazine, a digital TV trade publication established in 1981. It is published by TELE-audiovision Magazine GmbH based in Munich, Germany. Alexander Wiese is the publisher and editor-in-chief. The magazine is published in both print and digital formats and covers topics related to digital TV technology and devices, with a focus on products that utilize multiple tuners in the latest issue.
This document is the March-April 2015 issue of TELE-audiovision, a digital TV trade magazine published since 1981. The issue includes test reports on new products such as a triple-tuner HD receiver, a dual tuner signal meter, and an amplifier that improves signal quality. It also has articles on a software developer in Germany and a satellite equipment wholesaler in Iceland, as well as information on the magazine's global readership and a history of TELE-audiovision.
Sumavision is a leading Chinese provider of digital TV solutions. It has developed a patented modular platform called EMR that allows broadcasters to easily upgrade their systems by swapping modules as technologies advance. The EMR platform consists of racks that accept up to six modules with different functions. This provides flexibility to configure networks in different ways. Sumavision has also established several international support centers to provide local assistance to customers abroad.
1. PRODUCT NEWS Fibre Optic Products
GlobalInvacom The British company
GlobalInvacom invented
Expands
the optical LNB. TELE-
satellite reported on this
futuristic invention back
Product Palette in its 04-05/2008 and
08-09/2009 issues.
In the meantime,
GlobalInvacom has
expanded its optical
LNB product palette.
TELE-satellite, in the
04-05/2010 issue,
introduced the newest
versions, a PFA optical
LNB, (until then optical
LNBs were only available
for offset antennas) and an
expansion of the terrestrial
optical LNB system in
which the transmission
of both satellite and
terrestrial signals on two
optical frequency ranges
are carried on one optical
cable.
But progress hasn’t come to a stop at
GlobalInvacom. Since the TELE-satellite
04-05/2010 issue, there have been more
additions and expansions of the optical
LNB system. Ivan Horrocks, Director of
Sales and Marketing for GlobalInvacom,
explains us the latest in optical cables,
namely a ducting/direct burial cable.
This cable can be used, for example,
to link two locations together where the
first location with the satellite antenna
is perhaps on top of a mountain and
the second location might be down in a
valley. The cable would simply be buried
underground between the two locations
and be completely invisible. It’s spe-
cifically designed to be buried for long
stretches underground.
■ GlobalInvacom’s Technical Support Richard
Brooke shows us a 50m bundle of their new
optical earth cable especially designed to
be buried underground. If desired, it can
be custom-made (with or without attached
connectors).
80 TELE-satellite — Global Digital TV Magazine — 08-09/2010 — www.TELE-satellite.com
2. TELE-satellite World www.TELE-satellite.com/...
Download this report in other languages from the Internet:
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■ New at GlobalInvacom: a housing with four stacked ODU32 components that Available online starting from 30 July 2010
provides eight identical optical connections, capable of feeding 256 points.
Not only is this cable especially resis- tor in Malaysia; distributors from other always better positioned to upgrade
tant to chemicals that might be found Asian countries are invited to contact even more sophisticated installations.
in the ground, its orange GlobalInvacom Ivan Horrocks at GlobalInvacom’s head-
color would be easy to spot if under- quarters in Great Britain. In this way the super-modern opti-
ground work were ever performed at a cal reception system from GlobalInva-
later time where the cable was buried. GlobalInvacom is constantly expand- com can always find new customers and
ing its product variations so that it is users.
“We updated our splitter with built-
in jacks”, explains Ivan Horrocks while
glancing at the deep black splitters
available in 2, 3, 4 and 8 output versions.
“The installer merely needs to connect
the prefabricated cables,“ says Ivan
Horrocks as he points out the optical
connectors. The older splitter versions
were fitted with fixed connector cables.
This new version provides greater flex-
ibility for installers by making it easier
to match cable lengths to each specific
application.
GlobalInvacom also came up with a
new idea with its distribution technol-
ogy. “We stacked four ODU32 compo-
nents on top of each other and bundled
them together in a single housing”,
explains Ivan Horrocks as he shows
us a sample unit. “This provides eight
identical optical outputs which further
expands the capabilities of our system.”
This variation is best suited where the
distribution is not done serially, that is
from one connection to the next one,
but rather from one central location out
in all different directions. In a case like
this you’d want as many identical signal
sources as well as optical connections
as possible.
To top it all off, Ivan Horrocks
revealed to us that GlobalInvacom is in
the process of expanding its distributor
network. “Up until now we were mostly
active in Europe and the Middle East”,
he explains, “but now we are working on
expanding into Asia.”
■ GlobalInvacom modified the optical splitter with connector jacks: the optical connection
GlobalInvacom already has a distribu- cables can now be directly plugged into the splitter.
www.TELE-satellite.com — 08-09/2010 — TELE-satellite — Global Digital TV Magazine 81