北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2006, Vol. 29 ›› Issue (3): 7-12.doi: 10.13190/jbupt.200603.7.hu

• 论文 • 上一篇    下一篇

一种全新的Turbo-MIMO接收机方案

胡 旸 尹长川 乐光新   

  1. 北京邮电大学 电信工程学院 北京
  • 收稿日期:2005-05-23 修回日期:1900-01-01 出版日期:2006-06-30 发布日期:2006-06-30
  • 通讯作者: 胡 旸

A Novel Turbo-MIMO Receiver Scheme

HU Yang, YIN Chang-chuan, YUE Guang-xin   

  1. Beijing University of Posts and Telecommunications, Beijing
  • Received:2005-05-23 Revised:1900-01-01 Online:2006-06-30 Published:2006-06-30
  • Contact: HU Yang

摘要:

为有效克服MIMO中多发送天线引入的空间干扰,结合Turbo编码提出了一种全新和高效的接收机方案。该方案修正了Turbo软迭代译码算法,同步进行干扰检测和Turbo译码,从信息论的角度可以更充分地利用接收的信息。多接收天线可以对判决似然比和迭代译码的外部信息提供分集增益,从而进一步提高系统性能。该方案克服了传统的空时技术,比如STBC(空时分组码)和BLAST(空时层处理)的发送天线、发送时隙以及接收天线间的约束限制。仿真结果从系统性能和迭代参数证实了算法的有效性。

关键词: Turbo-MIMO, 迭代译码, 外部信息, 分集增益

Abstract:

A novel and effective receiver scheme is presented with Turbo-code in order to effectively overcome the space interference induced by multi-antenna MIMO system. By modifying the conventional Turbo iterative decoding algorithm, new scheme synchronizes the interference detector with Turbo decoder, which can fully utilize original received information from the point of view of information theory. Multi-receive antennas can also provide the diversity gain for LLR information and iterative extrinsic information. The scheme breaks the restriction of space and time domain of STBC and BLAST. Simulation results verify the validity of the scheme from system performance and iterative parameters.

Key words: Turbo-MIMO, iterative decoding, extrinsic information, diversity gain

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