Inter-chip interference cancellation for DS-CDMA with frequency-domain equalization

Kazuaki Takeda, Fumiyuki Adachi

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

The bit error rate (BER) performance of DS-CDMA in a frequency-selective fading channel can be significantly improved by the use of frequency-domain equalization (FDE). However, for a small spreading factor SF, the residual inter-chip-inference (ICI) degrades the BER performance. In this paper, we propose three types of ICI cancellation and the BER performance improvement is evaluated by computer simulation. The ICI replica is generated and subtracted from the FDE-equalized chip sequence. The reduction in E b N 0 for achieving a BER=10 -4 is as much as about 4.2 dB when the spreading factor SF=4. Joint use of antenna diversity combining and ICI cancellation is also presented.

Original languageEnglish
Pages (from-to)2316-2320
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume60
Issue number4
Publication statusPublished - 2004 Dec 1
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 2004 Sep 262004 Sep 29

Keywords

  • DS-CDMA
  • Frequency-domain equalization
  • ICI cancellation

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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