A Weighted Delay Transmit Diversity System Combined with Antenna Diversity Reception For DS-CDMA Mobile Radio

Akihito Kato, Eisuke Kudoh, Fumiyuki Adachi

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we study a delay transmit diversity system combined with antenna diversity reception that transmits the time-delayed and weighted versions of the same signal from multiple antennas. At a receiver, multiple receive antennas are used and all delayed signals received on multiple antennas are coherently combined by a Rake receiver. The set of optimum antenna weights for maximizing the received signal-to-noise power ratio (SNR) after Rake combining is theoretically analyzed to show that the optimum solution is to transmit only from the best antenna that has the maximum equivalent channel gain seen after Rake combining. The bit error rate (BER) performance is theoretically analyzed and evaluated by computer simulation. The combined effect of transmit diversity and transmit power control (TPC) is also investigated.

Original languageEnglish
Pages (from-to)2211-2215
Number of pages5
JournalIEICE Transactions on Communications
VolumeE86-B
Issue number7
Publication statusPublished - 2003 Jul

Keywords

  • DS-CDMA
  • Fading
  • Rake combining
  • Transmit diversity
  • Transmit power control

ASJC Scopus subject areas

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

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