An improved encoder for joint source-channel decoder using conditional entropy constraint

Moonseo Park, Seong Lyun Kim

Research output: Contribution to journalArticle

Abstract

When the joint source-channel (JSC) decoder is used for source coding over noisy channels, the JSC decoder may invent errors even though the received data is not corrupted by the channel noise, if the JSC decoder assumes the channel was noisy. A novel encoder algorithm has been recently proposed to improve the performance of the communications system under this situation. In this letter, we propose another algorithm based on conditional entropy-constrained vector quantizer to further improve the encoder. The algorithm proposed in this letter significantly improves the performance of the communications system when the hypothesized channel bit error rate is high.

Original languageEnglish
Pages (from-to)2222-2225
Number of pages4
JournalIEICE Transactions on Communications
VolumeE92-B
Issue number6
DOIs
Publication statusPublished - 2009 Jun

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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