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中文摘要：
考虑多天线多中继两跳半双工无线网络，基于AF协议提出了RZF和IRZF—MF2种分布式波束形成方案．在中继节点，前者使用RZF技术进行接收和发射波束形成，后者分别使用IRZF和MF技术进行接收和发射波束形成．仿真结果显示，在瑞利信道下，2种方案与现有的MF—RZF方案性能相当；而在菜斯信道下，文中RZF方案性能最优，但需要较高的计算复杂度．相对于除RZF方案的其他方案，IRZF—MF实现了系统容量增益，并且其计算复杂度低于RZF方案．
英文摘要：
This paper is concerned with a two hop half-duplex wireless communication network with multi ple antennas and multiple relays. Based on amplify-and-forward （AF） protocol, two new distributed beam- forming schemes named IRZF MF and RZF were proposed for this system. The RZF scheme uses RZF technique for both receive and transmit beamforming while the IRZF-MF scheme uses IRZF and MF tech- nique for receive and transmit beamforming respectively. The simulation results show that the proposed two relay schemes achieve the same performance of existing MF-RZF scheme in the Rayleigh channel, meanwhile, the proposed RZF scheme achieves the best performance which requires a higher computational complexity and the proposed IRZF-MF scheme achieves the second best performance while requires less computational complexity than RZF scheme in the Rician channel compared with other existing distributed relaying schemes.
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