Performance evaluation of channel estimation techniques for a proposed '4G' MC-CDMA based system in a time varying channel

被引:0
|
作者
Cooper, MA [1 ]
Dowler, A [1 ]
Armour, SMD [1 ]
McGeehan, JP [1 ]
机构
[1] Univ Bristol, Ctr Commun Res, Bristol BS8 1UB, Avon, England
关键词
channel estimation; MC-CDMA; '4G'; Doppler; PSAM;
D O I
10.1109/ISWCS.2004.1407206
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper investigates the performance of channel estimation techniques applied to a proposed Fourth Generation (4G) Multi Carrier - Code Division Multiple Access (MC-CDMA) system. Coherent detection requires a per-sub band estimation of the channel frequency response for each Coded Orthogonal Frequency Division Multiplexing (COFDM) symbol. This paper compares the performance of a number of Pilot Symbol Assisted Modulation (PSAM) methods for achieving such estimates. Performance results are characterised by bit-error-rate (BER), data throughput (DT) and mean-squared error (MSE) for ETSI UTRA specified channel environments. It is shown that in an indoor environment, FFT filtering provides superior data throughput performance, whereas in a high Doppler vehicular environment, a reduced complexity Wiener filter is able to offer the best performance.
引用
收藏
页码:46 / 50
页数:5
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