摘要
MIMO技术可以有效地提高通信系统的容量,但会带来很严重的用户间干扰问题。预编码技术以其能简化接收机和抑制干扰的作用将会在未来通信中扮演着重要角色。将多数据流的预编码矩阵设计转换成单数据流预编码矢量设计,提出了基于信干噪比最大的分布式迭代算法,以及将虚拟信干噪和最小均方误差方法相结合的迭代算法。数值仿真结果表明提出的算法可以有效提高系统容量。
The technology of multiple input multiple output can make great improvements in terms of the overall throughput of the network.But it also brings an inevitable co-channel interference problem.Precoder design will play a pivotal role in future communication as its abilities of suppressing co-channel interference and simplifying receivers.In this paper,the precoder matrix design of multiple streams is transformed to the precoder vector design of single stream and two precoder design algorithms for MIMO interference channel based on the virtual SINR and the MMSE criterion are proposed.Simulation results are provided to demonstrate that the proposed designs are capable of significantly improving the system sum capacity.
出处
《计算机工程与应用》
CSCD
北大核心
2015年第16期77-81,129,共6页
Computer Engineering and Applications
基金
国家自然科学基金(No.61271234)
南京邮电大学校科研基金资助项目(No.NY210006)
关键词
多输入多输出系统
干扰信道
预编码
迭代算法
信号与干扰加噪声比
Multiple Input Multiple Output（MIMO）
interference channel
precoder
iterative algorithms
Signal to Interference plus Noise Ratio（SINR）
