宽带电力线MIMO通信中基于能效的波束成形算法

摘要

In broadband power line Multi-input multi-output (MIMO) communication, there are multi-user interference and co-channel interference, which needs an application of a beam forming algorithm to eliminate it. Because the channel state information cannot be accurately acquired, it needs a quantitative feedback for channels, so that the feedback error would cause a decline in performance of the system. Aiming at this problem, this paper proposes a beam forming algorithm, which considers the influences of quantization error of the algorithm. In the premise of ensuring the quality of customer service, this algorithm takes maximizing the system energy efficiency as the optimization goal. The beamforming simulation verifies the effectiveness and robustness of the algorithm.%宽带电力线MIMO通信中,由于存在多用户干扰和共信道干扰,需要应用波束成形算法消除,由于信道状态信息不能准确获得,需要对信道进行量化反馈,故反馈误差会导致系统性能下降;针对此问题,本文提出了一种考虑量化误差影响的波束成形算法,此算法在保证用户服务质量的前提下,以最大化系统能源利用效率为优化目标,仿真验证了此波束成形算法的有效性和鲁棒性.