Ergodic interference alignment for MIMO interference 
system with variable channel

doi:10.1016/S1005-8885(15)60619-7

中国邮电高校学报(英文) ›› 2015, Vol. 22 ›› Issue (1): 11-16.doi: 10.1016/S1005-8885(15)60619-7

Ergodic interference alignment for MIMO interference system with variable channel

任海英,刘元安,刘芳,高锦春,刘凯明,谢刚

北京邮电大学

收稿日期:2014-09-22 修回日期:2014-11-23 出版日期:2015-02-28 发布日期:2015-02-28
通讯作者: 任海英 E-mail:rhyrhy111@sina.com
基金资助:
国家科技重大专项;国家自然科学基金;国家自然科学基金;国家自然科学基金;安全生产智能监控北京市重点实验室主任基金

Ergodic interference alignment for MIMO interference system with variable channel

Received:2014-09-22 Revised:2014-11-23 Online:2015-02-28 Published:2015-02-28
Supported by:
National Science and Technology Major Projects;National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China;Beijing Key Laboratory of Work Safety Intelligent Monitoring

摘要/Abstract

摘要： The authors pay focus on the K user multiple-input multiple-output (MIMO) Gaussian interference channel (IC) with M transmitting antennas and N receiving antennas, in which and . The channel coefficients are variable, time varying or frequency selectively drawn from a continuous distribution. Based on ergodic interference alignment (IA), an achievable scheme was proposed to achieve a total of degrees of freedom (DoF). The ergodic IA scheme can reach the optimal DoF value with simply linear beamforming and finite symbols. Furthermore, the achievable rate of the ergodic IA scheme was derived at any signal-to-noise ratio (SNR). With numerical simulation, the performance of the proposed scheme is evaluated.

关键词: degrees of freedom, ergodic interference alignment, interference channel, multiple-input multiple-output

Abstract: The authors pay focus on the K user multiple-input multiple-output (MIMO) Gaussian interference channel (IC) with M transmitting antennas and N receiving antennas, in which and . The channel coefficients are variable, time varying or frequency selectively drawn from a continuous distribution. Based on ergodic interference alignment (IA), an achievable scheme was proposed to achieve a total of degrees of freedom (DoF). The ergodic IA scheme can reach the optimal DoF value with simply linear beamforming and finite symbols. Furthermore, the achievable rate of the ergodic IA scheme was derived at any signal-to-noise ratio (SNR). With numerical simulation, the performance of the proposed scheme is evaluated.

Key words: degrees of freedom, ergodic interference alignment, interference channel, multiple-input multiple-output

参考文献

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Ergodic interference alignment for MIMO interference system with variable channel

Ergodic interference alignment for MIMO interference system with variable channel

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