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Although the joint source and channel coding (JSCC) system based on double protograph low-density parity-check (DP-LDPC) codes shows excellent error performance in wireless communications systems, there still is some space left for the improvement of error rate performance and the robustness of this JSCC system as it suffers high sensitivity to source statistics. In this paper, an adaptive rate allocation...
High rate low-density parity-check (LDPC) codes have been under intense research in the serial concatenation of inner Extend partial-response Class 4(EPR4) and outer LDPC codes due to their decoding performance close to the Shannon capacity. The Accumulate Repeat-3 and Accumulate (AR3A) codes, viewed as a subclass of protograph LDPC codes, achieve good decoding performance with simple linear encoder...
In this letter, a framework of punctured rate-compatible multi-edge-type LDPC (RC-MET-LDPC) codes with short block length is presented. The simple form of traditional puncturing algorithms based on grouping and sorting (GS) algorithm can be applied for obtaining rate compatibility because of the structure advantage of MET-LDPC codes over conventional LDPC codes. The simulation results show that RCMET-LDPC...
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