Modified MMSE SQRD Based Detection for Coded MIMO-OFDM Systems

被引：2
|
作者：
Zhong, Wen [1 ]
Lu, Anan [1 ]
Gao, Xiqi [1 ]
机构：
[1] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2013年 / E96B卷 / 03期
基金：
中国国家自然科学基金;
关键词：
MMSE; SQRD; MIMO-OFDM; LLR; V-BLAST;
D O I：
10.1587/transcom.E96.B.830
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：
In this paper, a modified detection approach based on minimum mean-square error (MMSE) sorted QR decomposition (SQRD) for turbo coded multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems is presented. In conventional MMSE SQRD based detection, a component of the symbol to be detected is still present in the interference term, leading to less efficient log likelihood ratios (LLRs) passed to soft decoder. By moving this symbol component into the signal term, the modified MMSE SQRD based detection can provide more efficient LLRs for soft decoder. Simulation results show that the proposed detection can achieve significant performance gain.
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页码：830 / 835
页数：6
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