MIMO纯多播BC与单播IC的并存网络分析  

Analysis of MIMO pure multicast BC and unicast IC coexisting network

作　　者：刘锋[1] 裴育 于振超 LIU Feng;PEI Yu;YU Zhenchao(Shanghai Maritime University,College of Information Engineering,Shanghai 201306,China)

机构地区：[1]上海海事大学信息工程学院,上海市201306

出　　处：《电视技术》2019年第3期69-75,共7页Video Engineering

基　　金：国家自然科学基金面上项目(No.61271283);国家自然科学基金联合基金项目(U1701265).

摘　　要：在当下无线通信系统中,消息之间的相互干扰是影响系统性能的关键因素。针对纯多播BC信道与单播IC信道并存的系统模型,提出了一种将干扰消息置于其他信道的公共零空间的迫零算法。该模型在BC信道发送纯多播消息并在IC信道发送单播消息。该算法是先获取每个接收端干扰消息所处的零空间,然后取其公共的零空间,并在公共零空间中放入需消除的干扰消息,最终每个接收端可实现同时迫零。随后深入研究了系统的复杂度,最后采用MATLAB对系统的天线效率进行仿真,分析得到系统的最佳天线配置并且系统的空间复用增益与其理论分析一致。In the current wireless communication systems,the mutual interference between the messages is the key factor that affects the system performance.For the system model of coexistence of pure-multicast BC and unicast IC,a zero - forcing algorithm is proposed to place the interference message in the common null space of other channels.The model transmits a pure multicast message on the BC and sends a unicast message on the IC.The algorithm is to obtain the corresponding null space according to the interference message of the receiving end,and then take a number of the common null space of other channels.Finally,multiple interference messages are placed in the common null space of other channels at the same time,it is possible to implement more than one interference message at each receiving end.Then the complexity of the system is studied deeply.Finally,the efficiency of the antenna is simulated by MATLAB.The optimal antenna configuration of the system is obtained and the spatial multiplexing gain of the system is consistent with its theoretical analysis.

关 键 词：迫零算法 纯多播 单播 空间复用增益 

分 类 号：TN929.5[电子电信—通信与信息系统]