一种新的VMIMO协作中继选择方案

提出了一种无需信道估计的中继选择方案来实现虚拟多路输入输出（VMIMO）小区间的协作复用通信。在该方案中,VMIMO协作复用采用放大转发（AF）方式,中继VMIMO小区首先把接收到的从源VMIMO小区发射的信号和噪声同时进行线性放大,再向目的小区转发。仿真结果表明,与需要进行信道估计的基于瞬时信噪比的中继选择方案相比,所提出的方案其系统遍历容量和中断容量与前者几乎相同,但是后者却可以减小中继小区的运算复杂度。

A New Cooperative Relay-Selection Method in VMIMO Systems

A relay-select method without channel estimation is proposed to implement the cooperative multiplex communication between Virtual Multi-Input Multi-Output（VMIMO） cells.The Amplify-Forward（AF） is introduced in this scheme,this means that the relay VMIMO cell first linearly amplifies the received signals from the source with the noise and then re-transmits them to the destination VMIMO cells.The simulation results shows that,as compared with the relay selection based on the instantaneous Signal-to-Noise Ratio（SNR）,the system ergodic capacity and outage capacity of the relay selection proposed in the paper is almost identical with that of the former,and however,the proposed relay selection could reduce the calculation complexity of relay VMIMO.