计算机科学 ›› 2018, Vol. 45 ›› Issue (10): 78-82.doi: 10.11896／j.issn.1002-137X.2018.10.015
李方伟, 张琳琳, 朱江
LI Fang-wei, ZHANG Lin-lin, ZHU Jiang
摘要： 针对D2D(Device-to-Device)异构无线通信网络中D2D用户和蜂窝用户之间的干扰问题,提出一种基于时间反演的无线资源优化机制。该机制包括两个步骤:1)在上行传输系统中结合时间反演镜技术实现干扰消除,即对每个用户执行信道签名,提取有用信号,剔除干扰,获取系统用户信干噪比;2)根据用户信干噪比,采用功率控制算法并结合凸优化理论来调整用户的发射功率,以最大系统吞吐量为优化目标。仿真结果表明,该机制有效地抑制了D2D异构无线通信网络中蜂窝用户和D2D用户的相互干扰,提升了系统容量,同时满足了用户对通信可靠性的需求,保证了用户能够获得更高的QoS(Quality of Service)。
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