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RATE-COMPATIBLE PROTOGRAPH LDPC CODE FAMILIES WITH LINEAR MINIMUM DISTANCE
RATE-COMPATIBLE PROTOGRAPH LDPC CODE FAMILIES WITH LINEAR MINIMUM DISTANCE
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机译:线性最小距离的速率兼容协议LDPC代码系列
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摘要
Digital communication coding methods are shown, which generate certain types of low-density parity-check (LDPC) codes built from protographs. A first method creates protographs having the linear minimum distance property and comprising at least one variable node with degree less than 3. A second method creates families of protographs of different rates, all structurally identical for all rates except for a rate-dependent designation of certain variable nodes as transmitted or non-transmitted. A third method creates families of protographs of different rates, all structurally identical for all rates except for a rate-dependent designation of the status of certain variable nodes as non-transmitted or set to zero. LDPC codes built from the protographs created by these methods can simultaneously have low error floors and low iterative decoding thresholds.
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