基于信道容量分析的快速接收天线选择算法

摘要

The aim of wirless communication will continue to be faster and better. However, the frequency band of the wirless communication system is limited, and also the transmit power can not be as large as we want it to be. As the user＇s requirement for the quality of serverice increase with the aim of better life, the communication technologies which can improve the performance of the communication systems notably are starved foe The wirless communication technology named Multiple Input Multiple Output（MIMO）, which equipped with multiple RF chains both at the transmitter and receive~ Because of the space variables inducted by this technology , the system throughput and service quality can be improved notably. Howeve~ with the increase of RF chains, the hardware and signal processing complexity of the system increase exponentially which makes the system realization difficult. How to decrease the system realization complexity while remain the system performance is now an urgent problem for solution. In this paper fast antenna selection criterion of MIMO applied makes the MIMO systems realization complexity will be simplified while the system performance can be maintained, the performance of the MIMO system can be improved largely.%更快的传输速率,更优的传输质量永远是无线通信追求的目标。然而无线通信可使用的频带带宽是有限的,通信系统的发射功率上限也不能无限制的增长,随着用户需求的不断膨胀,性能更优的通信技术迫在眉睫。多输入多输出（MIMO）无线通信技术,在发射端与接收端同时装配多条射频链路,通过将空间信息引入到通信系统中,系统的传输速率及传输质量都得到了大幅度的提高。然而随着射频链路的增加,系统的硬件复杂度及信号处理的软件复杂度都呈指数增加。如何有效的减小系统实现复杂度且提高系统性能成为目前鱼待解决的问题。本文提出的MIMO快速接收天线选择算法在降低系统实现复杂度的同时可以有效的保证系统性能,使系统性能得到很大改善。