Novel Puncturing Strategy for Rate-Compatible Low-Density Parity-Check Codes with Diagonal Structure
Wenwen Li, Jing Lei, Erbao Li, Wei Yang, Yuqin Xiong · 2017
Puncturing is a good way to achieve Rate-Compatible (RC) family codes with high rate. In this paper, asimple yet efficient puncturing strategy for Low Density ParityCheck (LDPC) codes with diagonal structure is proposed andanalyzed. In order to minimize the recovery step of puncturednodes, all the parity nodes (PNs) are assumed being punctured atfirst and then recovered step by step. The algorithm is named asProgressive Node Recovery (PNR) and acquires puncturingorder reversely from recovery order. The diagonal structure ofmother code provides great convenience during the procedure.Extensive experimental results show that the PNR algorithm canreduce the performance loss caused by puncturing and thusguarantees the good error correction performance of RC familycodes with high code rates