A novel differential multiuser detection algorithm for multiuser MIMO-OFDM systems

被引：0
作者：
Zheng-min Kong
Guang-xi Zhu
Qiao-ling Tong
Yan-chun Li
机构：
[1] Huazhong University of Science and Technology,Department of Electronics and Information Engineering
[2] Huazhong University of Science and Technology,Wuhan National Lab for Optoelectronics
[3] Huazhong University of Science and Technology,Department of Electronic Science and Technology
来源：
Journal of Zhejiang University SCIENCE C | 2010年 / 11卷
关键词：
Multiuser detection (MUD); Orthogonal frequency division multiplexing (OFDM); Multiple-input multiple-output (MIMO); Decision feedback equalizer (DFE); Error feedback filter (EFF); Differential algorithm; TN929.5;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We propose an efficient low bit error rate (BER) and low complexity multiple-input multiple-output (MIMO) multiuser detection (MUD) method for use with multiuser MIMO orthogonal frequency division multiplexing (OFDM) systems. It is a hybrid method combining a multiuser-interference-cancellation-based decision feedback equalizer using error feedback filter (MIMO MIC DFE-EFF) and a differential algorithm. The proposed method, termed ‘MIMO MIC DFE-EFF with a differential algorithm’ for short, has a multiuser feedback structure. We describe the schemes of MIMO MIC DFE-EFF and MIMO MIC DFE-EFF with a differential algorithm, and compare their minimum mean square error (MMSE) performance and computational complexity. Simulation results show that a significant performance gain can be achieved by employing the MIMO MIC DFE-EFF detection algorithm in the context of a multiuser MIMO-OFDM system over frequency selective Rayleigh channel. MIMO MIC DFE-EFF with the differential algorithm improves both computational efficiency and BER performance in a multistage structure relative to conventional DFE-EFF, though there is a small reduction in system performance compared with MIMO MIC DFE-EFF without the differential algorithm.
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页码：798 / 807
页数：9
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