Viterbi-decoding differential detection of 16DAPSK

Koji Nemoto, Takahiko Saba, Iwao Sasase

Research output: Contribution to journalConference articlepeer-review


A novel differential detection (DD) scheme of 16 DAPSK based on MLSE using Viterbi algorithm is proposed and the BER performance of the proposed scheme is investigated by computer simulation. In the proposed Viterbi-decoding DD, each transmitted symbol sequence is estimated based on the trellis diagram one after another by using the metric of 3-symbol DD. Therefore the proposed Viterbi-decoding DD can estimate much longer symbol sequence than that of 3-symbol DD, whereas the computational complexity of the proposed scheme is the same as that of 3-symbol DD. It is shown that the BER performance of Viterbi-decoding DD outperforms that of 3-symbol DD without increasing computational complexity. Moreover, we show that the BER performance can be significantly improved by extending the length of trellis path.

Original languageEnglish
Pages (from-to)849-852
Number of pages4
JournalNational Conference Publication - Institution of Engineers, Australia
Issue number94 /9
Publication statusPublished - 1994 Dec 1
EventProceedings of the International Symposium on Information Theory & Its Applications 1994. Part 1 (of 2) - Sydney, Aust
Duration: 1994 Nov 201994 Nov 24

ASJC Scopus subject areas

  • General Engineering


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