Name
Abstract | ||
|---|---|---|
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 |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1109/VETECS.2006.1683149 | Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd |
Keywords | Field | DocType |
code division multiple access,equalisers,error statistics,fading channels,frequency-domain analysis,interference suppression,least mean squares methods,spread spectrum communication,ICI cancellation,bit error rate performance,downlink DS-CDMA transmission,frequency-domain equalization,frequency-selective fading channel,joint MMSE equalization,minimum mean square error criterion,multiplex order,orthogonality distortion,residual inter-chip-inference,spreading codes,DS-CDMA,ICI cancellation,MMSE,frequency-domain equalization | Residual,Equalization (audio),Fading,Computer science,Minimum mean square error,Electronic engineering,Code division multiple access,Telecommunications link,Spread spectrum,Bit error rate | Conference |
Volume | ISSN | ISBN |
4 | 1550-2252 E-ISBN : 0-7803-9392-9 | 0-7803-9392-9 |
Citations | PageRank | References |
7 | 1.04 | 3 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Kazuaki Takeda | 1 | 16 | 1.95 |
| Koichi Ishihara | 2 | 21 | 3.02 |
| Fumiyuki Adachi | 3 | 178 | 19.41 |