Joint frequency-domain equalization and antenna diversity combining for orthogonal multicode DS-CDMA signal transmissions in a frequency-selective fading channel

Takeshi Itagaki, Fumiyuki Adachi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Orthogonal multicode direct sequence code division multiple access (DS-CDMA) has the flexibility in offering various data rate services. However, in a frequency-selective fading channel, the bit error rate (BER) performance is severely degraded since the othogonality among spreading codes is partially lost. In this paper, we apply frequency-domain equalization and antenna diversity combining, used in multi-carrier CDMA (MC-CDMA), to orthogonal multicode DS-CDMA in order to restore the code othogonality while achieving frequency and antenna diversity effect. It is found by computer simulations that the joint use of frequency-domain equalization and antenna diversity combining can significantly improve the BER performance of orthogonal multicode DS-CDMA in a frequency-selective fading channel.

Original languageEnglish
Pages (from-to)1954-1963
Number of pages10
JournalIEICE Transactions on Communications
VolumeE87-B
Issue number7
Publication statusPublished - 2004 Jul

Keywords

  • Antenna diversity
  • Frequency-domain equalization
  • Frequency-selective fading
  • Multicode DS-CDMA

ASJC Scopus subject areas

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

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