Variable rate transmission and blind rate detection for coherent DS-CDMA mobile radio

Y. Okumura, F. Adachi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A variable rate data transmission and blind rate detection scheme is proposed for coherent DS-CDMA mobile radio. The data to be transmitted is first transformed into a QPSK symbol sequence, then multiplied by the rate-matched repetition code of '1, -1', and finally spread over a wide bandwidth. At the receiver, the received signal is despread by a matched filter and non-coherent rate detection is applied. The despread signal sample sequence is then multiplied by a repetition code of detected rate to recover the original transmitted QPSK symbol sequence. The probability of rate detection error for a three-rate case is evaluated by computer simulations in a two-path Rayleigh fading channel.

Original languageEnglish
Pages (from-to)2026-2027
Number of pages2
JournalElectronics Letters
Volume33
Issue number24
DOIs
Publication statusPublished - 1997 Nov 20
Externally publishedYes

Keywords

  • Code division multiple access
  • Mobile radio systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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