Performance Analysis of Multiuser Detectors for Uplink Quasi-synchronous MC-CDMA Systems
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- 作者：Felip Riera-Palou ; Guillem Femenias and Jaume Ramis
- 关键词：Multicarrier code division multiple access (MC ; CDMA) ; Group ; orthogonal ; Multiuser detection (MUD) ; Bit error rate (BER) ; Rayleigh fading
- 刊名：Wireless Personal Communications
- 出版年：2007
- 出版时间：December, 2007
- 年：2007
- 卷：43
- 期：4
- 页码：1511-1521
- 全文大小：465.3 KB
- 刊物类别：Engineering
- 刊物主题：Electronic and Computer Engineering
Signal,Image and Speech Processing
Processor Architectures - 出版者：Springer Netherlands
- ISSN：1572-834X
文摘
This paper analyses and compares the average bit error rate (BER) of different multiuser detectors (MUD) in the uplink of a multicarrier code- division multiple access (MC-CDMA) system. In particular, maximum likelihood, zero-forcing, minimum mean-square error and interference cancellation-based multiuser detectors have been analysed for the special case of uncorrelated subcarriers. The derived BER expressions are based upon previous results on diversity combining and also on recent findings on multiple input multiple output (MIMO) architectures. The subcarrier correlation is considered in the context of physical parameters currently under discussion for future wireless systems to give an indication up to what extent the assumption of uncorrelated subcarrier fading is plausible.