中短码长的率匹配多进制LDPC码研究设计  

On Several Kinds of Non-binary Rate-compatible LDPC Codes

作　　者：尚培培[1] 徐家品[1] 

机构地区：[1]四川大学电子信息学院,四川成都610064

出　　处：《通信技术》2012年第10期6-7,10,共3页Communications Technology

摘　　要：该课题研究构造了纠错能力强、编译码复杂度低的中短码长的率匹配多进制LDPC码。提出了一种校验位高效编码删余算法,以得到高性能的多进制RC-LDPC码。该删余算法以设计的高性能中短码长、中等码率(1/2码率)的多进制LDPC母码为基础,采用高效的结构化编码删余算法,实现比较宽的速率范围(例如1/10到9/10)内设计高性能的纠错码。仿真结果表明,此算法性能优于传统的随机删余和节点分组与排序删余算法。Several kinds of non-binary rate-compatible LDPC codes with strong error-detecting ability and low complexity in encoding and decoding are studied and constructed. An efficient punctured encoding algorithm of parity bit is proposed, thus to get high-performance non-binary RC-LDPC codes. The punctured algorithm, based on the non-binary mother code with high performance and medium bit rate （i/2 rate）, adopts efficient structured punctured algorithm and designs the high-performance error correction codes in a wide rate range （for example, from I/lO to 9/i0）. The simulation results indicate that this algorithm is better in performance than the conventional random puncturing algorithm and the puncturing algorithm based on node grouping and sorting.

关 键 词：中等码率 多进制LDPC码 率匹配 删余算法 

分 类 号：TN911[电子电信—通信与信息系统]