莱斯信道下多小区大规模MIMO系统上行资源分配

Abstract

针对莱斯信道下多小区上行多用户大规模MIMO系统，对上行链路的资源进行分配。采用最大比合并接收方式，联合优化导频信号长度，导频信号与数据信号的发射功率，以使系统频谱效率最大化。仿真结果表明，在莱斯因子较小时，通过资源分配可以显著提高系统的速率性能；但随着莱斯因子的增加，优化功率分配所带来的性能增益则减小。 This paper is concerned with the uplink resource allocation for multicell massive MIMO systems in Rician fading channels. With the receive processing of maximum ratio combining, it investigates an optimal resource allocation scheme which jointly selects the training duration, the training signal power and the data signal power in order to maximize the system spectral efficiency. Simulation results show that the rate performance can be improved significantly when the Rician factor is relatively small. However, the performance gain from optimal power allocation becomes smaller and smaller as the Rician factor goes large.