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在分布式天线分簇放置的单用户分布式无线通信系统中,为了有效地实现下行分集与复用的折中,提出了一种空时分组码(space-time block code,STBC)和垂直分层发送方案(vertical bell-labs layered space time,V-BLAST)的组合方案。在发送端根据反馈的发送相关矩阵的特征值,提出了天线选择和功率、速率分配的方案,使得系统误符号率(symbol error rate,SER)的上界最小。仿真结果表明:不同方案实际SER性能之间的关系和通过SER上界得到的关系完全一致。该方案简化了下行发送方案的设计,适合于实际应用。
In the single-user distributed wireless communication system with distributed antenna clustering, in order to effectively achieve the compromise between downlink diversity and multiplexing, a space-time block code (STBC) and vertical sub- A combination of vertical bell-labs layered space time (V-BLAST). Based on the eigenvalues of the transmitted correlation matrix, the scheme of antenna selection and power and rate allocation is proposed at the sender, which minimizes the upper bound of the system symbol error rate (SER). The simulation results show that the relationship between the actual SER performance of different schemes is exactly the same as that obtained through the SER upper bound. The scheme simplifies the design of the downlink sending scheme and is suitable for practical application.