基于改进最大信漏噪比准则的波束赋形算法Beamforming algorithm based on improved maximum signal-to-leakage-and-noise ratio criterion
赵子涛,宋志群,王荆宁,李勇
摘要(Abstract):
为了使通信系统能更加契合实际传输环境、保证系统公平性,提出了一种基于改进最大信漏噪比准则功率分配方式的波束赋形算法。首先根据接入节点的类型(基站或者终端)以及用户所处传输环境的不同对发射功率进行分配;其次依据用户执行任务的重要程度和设定的阈值上限的不同对发射功率进行二次调整,保证公平性。仿真结果表明,随着用户数目的增加,传统算法的公平性为一条下降的曲线,改进算法近似为一条水平直线,且用户数目越大,二者差值越大,改进算法的优势越明显;在用户数为12,权重间隔为1,阈值上限为1.4时,改进算法有着0.39 bps/Hz的系统容量提升。所设计的改进资源分配方式的算法能有效提高系统的公平性,在工程实际中有一定的使用价值。
关键词(KeyWords): 无线通信技术;波束赋形;信漏噪比;分配标准;公平性调度
基金项目(Foundation):
作者(Author): 赵子涛,宋志群,王荆宁,李勇
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