Multi-user interference cancellation technology in the presence of multiple frequency offsets

被引：1
|
作者：
Kobravi, A. [1 ]
Bahaei, M. R. Shikh
Lambotharan, S.
机构：
[1] Kings Coll London, Ctr DSP Res, Dept Elect Engn, London WC2R 2LS, England
[2] Cardiff Univ, Cardiff Engn Sch, Digital Signal Res Grp, Cardiff CF24 3AA, Wales
来源：
IET COMMUNICATIONS | 2007年 / 1卷 / 01期
关键词：
D O I：
10.1049/iet-com:20050171
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：
The performance of multi-user detectors in the presence of multiple frequency offsets under a Rayleigh fading channel environment is analysed, and techniques to estimate and remove multiple frequency offsets (FOs) for successive interference cancellation (SIC) and parallel interference cancellation (PIC) receivers are also proposed. The closed form expressions derived for bit error rate (BER) of SIC and PIC schemes in the presence of multiple FOs have been verified using extensive simulation results. The PIC is shown to be less sensitive to frequency offsets as compared to SIC. It is demonstrated through analytical and simulation results that the proposed frequency offset estimation and correction techniques provide approximately 8 dB gain in the BER performance over conventional SIC and PIC schemes in the presence of multiple frequency offsets.
引用
收藏
页码：7 / 14
页数：8
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