太赫兹科学与电子信息学报Issue(6)：837-841,5.DOI:10.11805/TKYDA201406.0837
一种低存储量需求的高效LDPC译码方法
An efficient decoding of LDPC codes with low memory requirement
摘要
Abstract
An efficient decoding with low memory requirement is presented in this paper. With some extra memory bits,the proposed method could achieve nearly 2 times throughput compared with the conventional decoding. This paper combines min-sum decoding with Sliced Two-phase Message Passing (STMP) decoding, and proposes an overlapping scheme. The accessing of the operation units to the memory units is also discussed in order to analyze the access violation. A group of Low Density Parity Check(LDPC) codes are selected from Chinese Digital Television Terrestrial Multimedia Broadcasting(DTTB) standard, and the throughput gain as well as the ratio of extra memory bits for the proposed decoding over the conventional Two Phase Message Passing(TPMP) are calculated. The calculated results indicate that MS-STMP decoding needs only extra 44%memory bits to achieve 1.85 times throughput in even,which is more efficient than the Overlapped Message Passing(OMP) decoding.关键词
低密度奇偶校验码/译码方法/存储量/交叠Key words
Low Density Parity Check codes/decoding/memory bits/overlapping分类
信息技术与安全科学引用本文复制引用
赵岭,李众,朱曼洁,王荣博..一种低存储量需求的高效LDPC译码方法[J].太赫兹科学与电子信息学报,2014,(6):837-841,5.基金项目
国家自然科学基金资助项目(61401010)；中国航天科技集团公司卫星应用研究院开放基金资助项目(2012-1696)；中央高校基本科研业务费专项资金资助项目(YWF13TRSC062) （61401010）
