Frequency-domain adaptive antenna array for multi-code MC-CDMA

Osamu Nakamura, Shinsuke Takaoka, Eisuke Kudoh, Fumiyuki Adachi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

MC-CDMA is an attractive multi-access method for the next generation high-speed mobile communication systems. The uplink transmission performance is limited by the multi-access interference (MAI) from other users since all users share the same bandwidth. Adaptive antenna array can be used to suppress the MAI and to improve the uplink transmission performance. In this paper, we propose a frequency-domain adaptive antenna array for multi-code MC-CDMA. The proposed frequency-domain adaptive antenna array uses a simple normalized LMS (NLMS) algorithm. Although the NLMS algorithm is used, very fast weight convergence within one MC-CDMA symbol duration is achieved since the weight updating is possible as many times as the number of subcarriers within one MC-CDMA symbol duration.

Original languageEnglish
Pages (from-to)918-925
Number of pages8
JournalIEICE Transactions on Communications
VolumeE90-B
Issue number4
DOIs
Publication statusPublished - 2007 Apr

Keywords

  • Adaptive algorithm
  • Adaptive antenna array
  • Frequency-domain
  • MC-CDMA

ASJC Scopus subject areas

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

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