反馈时延对闭环多天线系统性能的影响

孙欢; 尤肖虎

doi:10.3724/SP.J.1146.2007.00017

反馈时延对闭环多天线系统性能的影响

doi: 10.3724/SP.J.1146.2007.00017

孙欢,
尤肖虎

基金项目:

国家自然科学基金(60496311)资助课题

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出版历程
- 收稿日期: 2007-01-05
- 修回日期: 2007-07-16
- 刊出日期: 2008-02-19

Impact of Feedback Delay on the Performance of Closed Multi-Antenna Systems

摘要

摘要: 该文研究了在时间相关信道下反馈时延对基于天线选择闭环多天线系统性能的影响。在这种系统中，接收端根据瞬时最大信噪比准则选择发射端天线，并把选定天线信息通过反馈链路传送给发射端来进行天线选择。文中分析了在时变信道下反馈时延对系统平均容量、容量中断概率及在BPSK调制下系统的误比特率的影响，给出了其关系的解析表达式，数值仿真证明了理论分析的正确性。
- 多天线系统; 反馈时延; 时间相关信道; 天线选择
Abstract: In this paper, the impact of feedback delay on the performance of one closed multi-antennas system based transmit antenna selection is investigated. In such system, the receiver uses the maximum instantaneous SNR to select a target transmit antenna, then feedback the selected information to the receiver for transmit selection through the feedback link. The impact of feedback delay on the ergodic capacity, system outage probability and the bit error rate based on BPSK modulation are researched and the analytic results are presented. Simulations also demonstrate the effect of feedback delay on system performance.

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参考文献(1)

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