Method of interference cancellation based on space-time 
code in MIMO interference channels

doi:10.1016/S1005-8885(15)60617-3

中国邮电高校学报(英文) ›› 2015, Vol. 22 ›› Issue (1): 1-5.doi: 10.1016/S1005-8885(15)60617-3

• Wireless • 下一篇

Method of interference cancellation based on space-time code in MIMO interference channels

田心记,逯静

河南理工大学

收稿日期:2014-04-16 修回日期:2014-09-18 出版日期:2015-02-28 发布日期:2015-02-28
通讯作者: 田心记 E-mail:tian215216@sohu.com
基金资助:
基于Ethernet和WSN的矿井监控与应急通信技术研究;面向社区的协同检索方法研究;面向组合服务的智能化接入控制关键技术研究

Method of interference cancellation based on space-time code in MIMO interference channels

Received:2014-04-16 Revised:2014-09-18 Online:2015-02-28 Published:2015-02-28
Contact: Xin-Ji TIAN E-mail:tian215216@sohu.com

摘要/Abstract

摘要： The authors in this article investigated how to cancel multi-user interference with low feedback amount over 3-user multiple input multiple output (MIMO) interference channel using space-time code and precoders. Space-time block code with coding rate 2 was designed, also zero vectors were introduced into each codeword. The multi-user interference is mitigated by pre-coding at the transmitters and nonlinear operation and unidirectional cooperation link at the receivers. Compared with the existing scheme for the same scene, the proposed scheme greatly reduces feedback amount and improves the sum degrees of freedom (DOF). Simulation demonstrates the validity of the proposed scheme.

关键词: MIMO interference channel, space-time code, pre-coding, multi-user interference, feedback amount, DOF

Abstract: The authors in this article investigated how to cancel multi-user interference with low feedback amount over 3-user multiple input multiple output (MIMO) interference channel using space-time code and precoders. Space-time block code with coding rate 2 was designed, also zero vectors were introduced into each codeword. The multi-user interference is mitigated by pre-coding at the transmitters and nonlinear operation and unidirectional cooperation link at the receivers. Compared with the existing scheme for the same scene, the proposed scheme greatly reduces feedback amount and improves the sum degrees of freedom (DOF). Simulation demonstrates the validity of the proposed scheme.

Key words: MIMO interference channel, space-time code, pre-coding, multi-user interference, feedback amount, DOF

参考文献

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Method of interference cancellation based on space-time code in MIMO interference channels

Method of interference cancellation based on space-time code in MIMO interference channels

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