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在多用户MIMO系统中,在天线间或用户间进行发射功率分配,可以显著提高系统总容量.本文针对多用户M IMO系统中的下行链路,在多用户迭代注水算法的基础上,提出一种联合用户-天线功率分配算法,在进行多用户迭代注水之前,首先基于信漏噪比(SLNR)进行用户间功率分配.仿真结果显示,与多用户迭代注水算法及仅进行用户选择的多用户迭代注水算法相比,本文提出的算法大大提高了系统总容量.
In multi-user MIMO systems, the transmit power allocation between antennas or between users can significantly improve the total system capacity.In this paper, based on the multi-user iterative waterflooding algorithm for downlink in multi-user M IMO system, The joint user-antenna power allocation algorithm firstly performs inter-user power allocation based on signal-to-noise ratio (SLNR) before performing multi-user iterative waterflooding. Simulation results show that, compared with multi-user iterative waterflooding algorithm and multiuser iteration Compared with water injection algorithm, the proposed algorithm greatly improves the total system capacity.