一种基于反馈的发射赋形与接收合并多入多出方案
首发时间:2007-09-19
摘要:针对多天线系统中发送端未知准确的信道状态信息情况,提出了基于反馈的发射赋形与接收合并方案,通过接收端量化发送赋形向量并反馈至发送端,而接收端使用接收合并的方法,该方案可在较少反馈比特下提供显著性能增益,并且其性能对天线空间相关性的影响并不敏感。仿真结果显示,此系统的性能在各种相关性条件下好于传统的垂直-贝尔实验室分层空时结构(V-BLAST)。
关键词: 多入多出; 发射赋形接收合并; 垂直-贝尔实验室分层空时结构; 空间相关性; 瑞利商
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A Feedback based TBRC MIMO Scheme
Abstract:A Feedback based transmit beam-forming receive combing technology is provided to deal with the situation that the explicit channel state information (CSI) is not available at the transmitter. In this scheme, receiver feeds the beam-forming vector back to the transmitter after quantizing it, then the optimum combing method is used at the receiver. Significant gain can be obtained with small feedback bits and the performance is not sensitive to the channel spatial correlation. Simulation results show that the performances provided outperform the traditional vertical-Bell laboratory layered space-time(V-BLAST) scheme under different correlated channels.
Keywords: MIMO Transmit beam-forming receive combing (TBRC) vertical-Bell laboratory layered space-time Spatial correlation Rayleigh quotient
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No.1519314746911901****
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