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对多入多出多中继系统中的单播中继协议进行了性能分析,给出了接收信噪比表达式,该表达式可表示为中继节点前向/反向信道部分奇异值和部分奇异矢量夹角的函数.基于容量最大化准则,简化了单播中继协议的容量表达式,提出了基于瞬时信道状态信息和平均信道状态信息的中继节点选择方法,实现了信道信息反馈开销与系统各态历经容量之间的折中.
Performance analysis of unicast relay protocol in MIMO multi-trunking system is given, and the expression of received signal-to-noise ratio is given. The expression can be expressed as the singular value of the forward / reverse channel part of the relay node Partial singular vector angle.Based on the capacity maximization criterion, the capacity expression of unicast relay protocol is simplified, and the relay node selection method based on instantaneous channel state information and average channel state information is proposed, and the channel information feedback The trade-off between overhead and system capacity goes through capacity.