텔레비전 및 케이블

Implement the physical layer (PHY) of Data Over Cable Service Interface Specification (DOCSIS®) in the upstream TDMA operating mode [1][2].

Part of the ETSI (European Telecommunications Standards Institute) EN 300 429 standard for cable system transmission of digital television signals [ 1 ]. The example uses communications System objects to simulate the Digital Video Broadcasting - Cable (DVB-C) transmitter-receiver chain.

The application of low density parity check (LDPC) codes in the second generation Digital Video Broadcasting standard (DVB-S.2), which is deployed by DIRECTV in the United States. The example uses communications System objects to simulate a transmitter-receiver chain that includes LDPC encoding and decoding.

The vestigial sideband modulation with 8 discrete amplitude levels (8-VSB) transmission subsystem of the Advanced Television Systems Committee (ATSC) digital television standard [ 1 ]. The standard describes the characteristics of the U.S. advanced television system that is designed to transmit high-quality video, audio, and ancillary data within a single 6 MHz terrestrial television broadcast channel.

Part of the ETSI (European Telecommunications Standards Institute) EN 300 429 standard for cable system transmission of digital television signals [ 1 ]. The standard prescribes the transmitter design and sets minimum performance requirements for the receiver.

Part of the European Telecommunications Standards Institute (ETSI) EN 300 744 standard for terrestrial transmission of digital television signals. The standard prescribes the transmitter design and sets minimum performance requirements for the receiver.

The state-of-the-art channel coding scheme used in the second generation Digital Video Broadcasting standard (DVB-S.2), which is deployed by DIRECTV in the United States. The coding scheme is based on concatenation of LDPC (Low-Density Parity-Check) and BCH codes. LDPC codes, invented by Gallager in his seminal doctoral thesis in 1960, can achieve extremely low error rates near channel capacity by using a low-complexity iterative decoding algorithm. The outer BCH codes are used to correct sporadic errors made by the LDPC decoder.

Use the ldpcDecode function and gpuArray to increase the speed of a communications system simulation. The performance improvement is illustrated by modeling part of the ETSI (European Telecommunications Standards Institute) EN 302 307 standard for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications (DVBS-2) [ 1 ]. For further information on simulating the DVBS-2 system see DVB-S.2 Link, Including LDPC Coding in Simulink. You must have a Parallel Computing Toolbox™ user license to use GPU processing for ldpcDecode.