摘要
在多用户MIMO系统中可以联合预编码和功率分配来提高系统QoS。在重点研究信漏噪比SLNR的基础上,提出一种低复杂度的联合预编码与功率分配的算法。首先利用信道的迹为各个用户分配功率,然后以误码率最小准则为用户的各个空间子信道分配功率,既克服了SLNR只利用单个子信道传输的缺点,同时兼顾系统性能和运算复杂度。理论分析和仿真结果表明算法的实用价值。
The QoS of multi-user MIMO systems can be improved through combining with precoder design and power allocation. By analyzing the SLNR, a low complexity algorithm that focuses on precoding and power allocation is proposed. Firstly, the power is allocated for all users and all sub-channels according to trace of channels. The algorithm makes full use of MIMO channels, while considering BER and perplexity. The simulation results show that it is useful in practice.
出处
《电视技术》
北大核心
2011年第13期95-97,共3页
Video Engineering
基金
洛阳理工学院青年科研基金
