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 EbN 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 language | English |
|---|---|
| Pages (from-to) | 2316-2320 |
| Number of pages | 5 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 60 |
| Issue number | 4 |
| Publication status | Published - 2004 |
| Event | 2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States Duration: 2004 Sept 26 → 2004 Sept 29 |
Keywords
- DS-CDMA
- Frequency-domain equalization
- ICI cancellation