No |
27624 |
標題(和) |
|
標題(英) |
DSD(Double Soft Decision)Concatenated Forward Error Correction Scheme |
研究会名(和) |
衛星通信; 交換システム; 情報ネットワ-ク; 通信方式 |
研究会名(英) |
Satellite Telecommunications; Switching Systems Engineering; Information Networks; Communication Systems |
開催年月日 |
1991-07-17 |
終了年月日 |
1991-07-19 |
会議種別コード |
2 |
共催団体名(和) |
Asia & Pacific Areas Assembly for Communications Systems |
資料番号 |
SAT91-44 // SSE91-49 // IN91-49 // CS91-53 |
抄録(和) |
|
抄録(英) |
In order to realize a higher-coding-gain forward error correction scheme with simple hardware,a novel concatenated coding scheme employing soft decision decoding for not only inner codes but also outer codes (DSD (Double Soft Decision)concatenated forward error correction scheme) is proposed.In this scheme,likelihood information from an inner Viterbi decoder is used for the decoding of outer codes.Path memory circuit status 1,0 ratio for likelihood information is newly proposed and it is shown that this method is the most reliable even with the simplest hardware among the alternative likelihood information extracting methods.Computer simulation clarifies that the proposed DSD scheme improves Peperformance to one-third that of the conventional hard decision outer decoding. |
収録資料名(和) |
電子情報通信学会技術研究報告 |
収録資料の巻号 |
Vol.91 No.131〜142 |
ページ開始 |
103 |
ページ終了 |
108 |
キーワード(和) |
|
キーワード(英) |
Viterbi decoder |
本文の言語 |
ENG |
著者(和) |
Kato,Shuzo |
著者(ヨミ) |
|
著者(英) |
|
所属機関(和) |
|
所属機関(英) |
NTT Radio Communication Systems Laboratories |
著者(和) |
Morikura,Masahiro |
著者(ヨミ) |
|
著者(英) |
|
所属機関(和) |
|
所属機関(英) |
NTT Radio Communication Systems Laboratories |
著者(和) |
Kubota,Shuji |
著者(ヨミ) |
|
著者(英) |
|
所属機関(和) |
|
所属機関(英) |
NTT Radio Communication Systems Laboratories |
著者(和) |
Honda,Shunji |
著者(ヨミ) |
|
著者(英) |
|
所属機関(和) |
|
所属機関(英) |
NTT Network Systems Development Center |