中国物理B ›› 2016, Vol. 25 ›› Issue (5): 50101-050101.doi: 10.1088/1674-1056/25/5/050101
• GENERAL • 下一篇
Yu Yang(杨瑜), Bing-Zhong Wang(王秉中), Shuai Ding(丁帅)
Yu Yang(杨瑜), Bing-Zhong Wang(王秉中), Shuai Ding(丁帅)
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.
中图分类号: (Communication forms and techniques (written, oral, electronic, etc.))