基于协作认知网络的虚拟MIMO信号及干扰分布特性研究  

Properties of virtual MIMO signal and interference in cooperation cognitive networks

作　　者：鲍煦[1] 宋铁成[2] 沈连丰[2] 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013 [2]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《通信学报》2012年第5期85-90,共6页Journal on Communications

基　　金：国家自然科学基金资助项目(60972026);江苏大学高级人才基金资助项目(11JDG130)~~

摘　　要：提出了一种在无线认知网络中主从用户协作的虚拟MIMO传输方案,给出了虚拟MIMO信号和系统干扰的互补累积分布函数的紧致上下界及其渐进分布,理论推导和数值仿真证明了上下界具有相同的渐进分布特性。仿真结果显示虚拟MIMO技术增强了主用户的抗干扰性能。A virtual MIMO scheme based on cooperation of the primary and secondary users was proposed in the wireless cognitive networks. The fight upper and lower bounds about the complimentary cumulative distribution function of the virtual MIMO signal and interference were derived. The asymptotic distributions of the bounds were also obtained. The theoretical derivations and numerical simulations testified that the upper and lower bounds had the same asymptotic distribution. The numerical simulation results reveal that the virtual MIMO technique improves the anti-interference ability of the primary signal.

关 键 词：虚拟MIMO 互补累积分布函数 渐进分布 泊松点过程 

分 类 号：TN929.5[电子电信—通信与信息系统]