Low Complexity Frequency Domain Turbo Equalization Based on Single Frequency Tone in MIMO Systems

被引：0
|
作者：
Yang Yang [1 ]
Chang Yong-yu [1 ]
Yang Wei [1 ]
Wang Yan-long [1 ]
Yang Da-cheng [1 ]
机构：
[1] BUPT, Wireless Theory & Technol Lab, Beijing, Peoples R China
来源：
2009 IEEE 20TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS | 2009年
关键词：
Turbo Equalization; SFT; MMSE; MIMO;
D O I：
10.1109/PIMRC.2009.5449850
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
A novel Frequency Domain Turbo Equalization (FD-TE) is proposed in multiple input multiple output (MIMO) systems, in which equalization is executed on Single Frequency Tone (SFT). It is proposed that received data from all receive antennas on one frequency tone are considered jointly, and then minimum mean square error (MMSE) equalization is implemented. This algorithm can reduce the calculation complexity greatly, and has the same performance as the conventional algorithms. After equalization, data from one transmit antenna on all frequency tones are processed together and transformed into time domain. Later, extrinsic Log-likelihood ratio (LLR) is calculated and sent to Soft-In Soft-Out (SISO) decoder. Theoretical deduction and simulation prove that it can obtain the same performance with a low complexity.
引用
收藏
页码：271 / 275
页数：5
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