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- W1987128464 abstract "본 논문에서는 DVB-S2 기반 고속 LDPC 복호를 위한 알고리즘을 제안하였다. 체크 노드 연산중에 비트 노드 연산을 수행하여 기존의 LDPC 복호 알고리즘에 비해 반복횟수를 줄일 수 있는 horizontal shuffle scheduling 알고리즘을 기반으로 하여 복호 속도를 보다 고속화 할 수 있는 알고리즘을 제안하였다. 기존의 체크 노드 연산은 하나의 메모리에서 값을 가져오기 때문에 체크 노드 연산과정에서 많은 지연이 발생 하는데 이를 row weight의 개수인 dc개의 병렬구조로 설계함으로써 체크 노드 연산과정의 지연을 줄일 수 있고 따라서 고속 복호가 가능하다. 이를 DVB-S2에 제시되고 있는 다양한 부호화율에서 dc개의 분리 할 수 있는 최대의 메모리를 제시하고 전송률을 제시하였다. In this paper, we proposed high speed LDPC decoding algorithm based on DVB-S2 standard. For implementing the high speed LDPC decoder, HSS algorithm which reduce the iteration numbers without performance degradation is applied. In HSS algorithm, check node update units are update at the same time of bit node update. HSS can be accelerated to the decoding speed because it does not need to separate calculation of the bit nodes, However, check node calculation blocks need many clocks because of just one memory is used. Therefore, this paper proposed dc-split memory structure in order to reduced the delay and high speed decoder is possible. Finally, this paper presented maximum split memory and throughput for various coding rates in DVB-S2 standard." @default.
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- W1987128464 date "2013-09-30" @default.
- W1987128464 modified "2023-10-03" @default.
- W1987128464 title "A Study on High Speed LDPC Decoder Algorithm based on dc saperation" @default.
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- W1987128464 doi "https://doi.org/10.6109/jkiice.2013.17.9.2041" @default.
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