Downlink DS-CDMA transmission with joint MMSE equalization and ICI cancellation

Kazuaki Takeda, Koichi Ishihara, Fumiyuki Adachi

研究成果: Conference contribution

11 被引用数 (Scopus)

抄録

The bit error rate (BER) performance of downlink DS-CDMA in a frequency-selective fading channel can be significantly improved by the use of frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion. However, the presence of residual inter-chip-inference (ICI) after FDE produces the orthogonality distortion among the spreading codes and the BER performance degrades as the number of multiplex order increases. In this paper, we propose a joint MMSE-FDE and ICI cancellation to improve the BER performance of the DS-CDMA downlink. In the proposed scheme, the residual ICI replica in the frequency-domain is generated and subtracted from each frequency component of the received signal after MMSE-FDE. The MMSE weight at each iteration is derived taking into account the residual ICI. The effect of the proposed ICI cancellation scheme is confirmed by computer simulation.

本文言語English
ホスト出版物のタイトル2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring - Proceedings
ページ1762-1766
ページ数5
出版ステータスPublished - 2006
外部発表はい
イベント2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring - Melbourne, Australia
継続期間: 2006 5月 72006 7月 10

出版物シリーズ

名前IEEE Vehicular Technology Conference
4
ISSN(印刷版)1550-2252

Other

Other2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring
国/地域Australia
CityMelbourne
Period06/5/706/7/10

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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