›› 2013,Vol. 28 ›› Issue (3): 445-453.doi: 10.1007/s11390-013-1346-0

• Special Section on Selected Paper from NPC 2011 • 上一篇    下一篇

用于迭代接收机的简化MMSE MIMO检测算法

Juan Han1,2 (韩娟), Chao Tang3,4 (唐超), Qiu-Ju Wang1,2 (王秋菊), Zi-Yuan Zhu1,2 (朱子元) and Shan Tang1,2 (唐杉)   

  1. 1. Beijing Key Laboratory of Mobile Computing and Pervasive Device, Institute of Computing Technology Chinese Academy of Sciences, Beijing 100190, China;
    2. Beijing Sylincom Technologies Co., Ltd., Beijing 100190, China;
    3. School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China;
    4. Beijing Science and Technology Information Center, Beijing 100035, China
  • 收稿日期:2012-10-05 修回日期:2013-03-01 出版日期:2013-05-05 发布日期:2013-05-05
  • 作者简介:Juan Han is an associate professor at Beijing Key Laboratory of Mobile Computing and Pervasive Device, Institute of Computing Technology, Chinese Academy of Sciences, Beijing. She received the B.S. degree in telecommunications engineering and the Ph.D. degree in circuits and systems from Beijing University of Posts and Telecommunications, in 2004 and 2009, respectively. Her research interests include baseband signal processing, prototype verification of baseband chipset, validation of new technologies in broadband wireless communications, and system integrations.
  • 基金资助:

    This work was supported by the Major Project of the Beijing Natural Science Foundation under Grant No. 4110001 and the National Science and Technology Major Project of China under Grant No. 2012ZX03001021-003.

Simplified MMSE Detectors for Turbo Receiver in BICM MIMO Systems

Juan Han1,2 (韩娟), Chao Tang3,4 (唐超), Qiu-Ju Wang1,2 (王秋菊), Zi-Yuan Zhu1,2 (朱子元), and Shan Tang1,2 (唐杉)   

  1. 1. Beijing Key Laboratory of Mobile Computing and Pervasive Device, Institute of Computing Technology Chinese Academy of Sciences, Beijing 100190, China;
    2. Beijing Sylincom Technologies Co., Ltd., Beijing 100190, China;
    3. School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China;
    4. Beijing Science and Technology Information Center, Beijing 100035, China
  • Received:2012-10-05 Revised:2013-03-01 Online:2013-05-05 Published:2013-05-05
  • Contact: 10.1007/s11390-013-1346-0
  • Supported by:

    This work was supported by the Major Project of the Beijing Natural Science Foundation under Grant No. 4110001 and the National Science and Technology Major Project of China under Grant No. 2012ZX03001021-003.

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本文针对比特交织编码调制系统中的迭代接收机,提出了两种采用简化的最小均方误差滤波结合并行软干扰删除的方法。所述的方法用于迭代接收机的非首次迭代处理中,可以抑制残余干扰及噪声。通过将并行软干扰删除后的残余干扰及噪声建模为不相关的高斯随机变量,可以避免传统最小均方误差滤波中的矩阵求逆运算,从而在性能略有损失的前提下,大大降低运算复杂度。此外,通过采用最优的排序并行软干扰删除,简化最小均方误差方法与传统最小均方误差方法的性能差距进一步减小。蒙特卡洛仿真结果验证了,所提出的方法在各种多天线配置下,可以获得与传统最小均方误差方法几乎相同的性能,但计算复杂度大幅度降低。

Abstract: In this article, two methods adopting simplified minimum mean square error (MMSE) filter with soft parallel interference cancellation (SPIC) are discussed for turbo receivers in bit interleaved coded modulation (BICM) multiple-input multiple-output (MIMO) systems. The proposed methods are utilized in the non-first iterative process of turbo receiver to suppress residual interference and noise. By modeling the components of residual interference after SPIC plus the noise as uncorrelated Gaussian random variables, the matrix inverse for weighting vector of conventional MMSE becomes unnecessary. Thus the complexity can be greatly reduced with only slight performance deterioration. By introducing optimal ordering to SPIC, performance gap between simplified MMSE and conventional MMSE further narrows. Monte Carlo simulation results confirm that the proposed algorithms can achieve almost the same performance as the conventional MMSE SPIC in various MIMO configurations, but with much lower computational complexity.

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