Overlapped message passing technique with resource sharing for high speed CMMB LDPC decoder

摘要: Today, demands for high speed digital communication are getting bigger due to wide deployment of 4G mobile communications and TV services. Requirement data processing makes forward error correction crucial. LDPC is one the most popular correcting codes. In this paper, we propose a novel decoder China Multimedia Mobile Broadcasting (CMMB) standard. The decoding carried out iteratively, which leads relatively long latency. Also, code words, amount required memory huge. To resolve these issues, Overlapped Message Passing (OMP) algorithm with an efficient resource sharing technique. Using proposed method, find best permuted parity check matrix CMMB improve throughput while minimizing requirement. OMP only, could performance by 10%. avoid potential access conflicts, grouping technique pipelining also proposed. By applying all techniques that in up 451.