Differential detection for 16 amplitude/phase shift keying (16 DAPSK) using viterbi algorithm

Koji Nemoto, Iwao Sasase

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Recently, differentially encoded 16 amplitude/phase shift keying (16 DAPSK) has been investigated intensively for mobile radio applications. Since the bit error rate (BER) performance of differential detection (DD) is inferior to that of coherent detection (CD), multisymbol DD of 16 DAPSK has been proposed. However, as the observation interval of multisymbol DD is increased to improve the BER performance, computational complexity increases. In this paper, the differential detection scheme of 16 DAPSK based on the maximum likelihood sequence estimation (MLSE) using Viterbi algorithm is proposed and the BER performance of the proposed scheme is investigated by computer simulation. It is shown that the BER performance of Viterbi-decoding DD outperforms that of three-symbol DD without increasing the computational complexity.

Original languageEnglish
Pages (from-to)74-81
Number of pages8
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume79
Issue number1
Publication statusPublished - 1996 Jan

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Keywords

  • 16 DAPSK
  • Land mobile communications
  • Multisymbol differential detection
  • Viterbi algorithm

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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