MIMO的反馈信道研究  

On the Feedback Channel of MIMO

作　　者：张铎[1] 卫国[1] 朱近康[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系个人通信与扩频实验室,合肥230027

出　　处：《电子与信息学报》2004年第12期1951-1957,共7页Journal of Electronics & Information Technology

摘　　要：该文提出了在闭环MIMO容量研究中引入了率失真理论的研究方法,推导出了反馈信道速率和闭环MIMO容量之间的数学关系。通过理论分析和仿真结果,得出了有关反馈信道速率与信噪比,天线数,闭环MIMO容量之间变化关系的四个重要结论。为实际的闭环MIMO系统设计提供了折衷反馈信道开销和闭环MIMO容量的依据,对系统设计有重要的指导意义.The rate-distortion theory is induced to the system model, and the mathematic formula between the feedback channel rate and the closed-loop MIMO capacity are deduced. Through theoretical analysis and simulation results, this paper proposes four important conclusions on the relation between the feedback rate, the average SNR, the antenna number, and the closed-loop capacity. The conclusions, which are important to system design, provide the instructions to design and tradeoff the overhead of feedback channel and the capacity

关 键 词：反馈信道 反馈信道速率 开环MIMO容量 闭环MIMO容量 容量增益 

分 类 号：TN929.5[电子电信—通信与信息系统]