中国物理B ›› 2016, Vol. 25 ›› Issue (5): 50101-050101.doi: 10.1088/1674-1056/25/5/050101

• GENERAL •    下一篇

Shannon information capacity of time reversal wideband multiple-input multiple-output system based on correlated statistical channels

Yu Yang(杨瑜), Bing-Zhong Wang(王秉中), Shuai Ding(丁帅)   

  1. Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2015-11-05 修回日期:2016-01-18 出版日期:2016-05-05 发布日期:2016-05-05
  • 通讯作者: Bing-Zhong Wang E-mail:bzwang@uestc.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331007, 61361166008, and 61401065) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20120185130001).

Shannon information capacity of time reversal wideband multiple-input multiple-output system based on correlated statistical channels

Yu Yang(杨瑜), Bing-Zhong Wang(王秉中), Shuai Ding(丁帅)   

  1. Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2015-11-05 Revised:2016-01-18 Online:2016-05-05 Published:2016-05-05
  • Contact: Bing-Zhong Wang E-mail:bzwang@uestc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331007, 61361166008, and 61401065) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20120185130001).

摘要: Utilizing channel reciprocity, time reversal (TR) technique increases the signal-to-noise ratio (SNR) at the receiver with very low transmitter complexity in complex multipath environment. Present research works about TR multiple-input multiple-output (MIMO) communication all focus on the system implementation and network building. The aim of this work is to analyze the influence of antenna coupling on the capacity of wideband TR MIMO system, which is a realistic question in designing a practical communication system. It turns out that antenna coupling stabilizes the capacity in a small variation range with statistical wideband channel response. Meanwhile, antenna coupling only causes a slight detriment to the channel capacity in a wideband TR MIMO system. Comparatively, uncorrelated stochastic channels without coupling exhibit a wider range of random capacity distribution which greatly depends on the statistical channel. The conclusions drawn from information difference entropy theory provide a guideline for designing better high-performance wideband TR MIMO communication systems.

关键词: information entropy, time reversal, wideband multiple-input multiple-output (MIMO) system, antenna mutual coupling

Abstract: Utilizing channel reciprocity, time reversal (TR) technique increases the signal-to-noise ratio (SNR) at the receiver with very low transmitter complexity in complex multipath environment. Present research works about TR multiple-input multiple-output (MIMO) communication all focus on the system implementation and network building. The aim of this work is to analyze the influence of antenna coupling on the capacity of wideband TR MIMO system, which is a realistic question in designing a practical communication system. It turns out that antenna coupling stabilizes the capacity in a small variation range with statistical wideband channel response. Meanwhile, antenna coupling only causes a slight detriment to the channel capacity in a wideband TR MIMO system. Comparatively, uncorrelated stochastic channels without coupling exhibit a wider range of random capacity distribution which greatly depends on the statistical channel. The conclusions drawn from information difference entropy theory provide a guideline for designing better high-performance wideband TR MIMO communication systems.

Key words: information entropy, time reversal, wideband multiple-input multiple-output (MIMO) system, antenna mutual coupling

中图分类号:  (Communication forms and techniques (written, oral, electronic, etc.))

  • 01.20.+x
41.20.Jb (Electromagnetic wave propagation; radiowave propagation)