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.
|ジャーナル||IEEE Vehicular Technology Conference|
|出版ステータス||Published - 2004 12 1|
|イベント||2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States|
継続期間: 2004 9 26 → 2004 9 29
ASJC Scopus subject areas
- コンピュータ サイエンスの応用