计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
16期
77-81,129
,共6页
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
多輸入多輸齣繫統%榦擾信道%預編碼%迭代算法%信號與榦擾加譟聲比
다수입다수출계통%간우신도%예편마%질대산법%신호여간우가조성비
Multiple Input Multiple Output(MIMO)%interference channel%precoder%iterative algorithms%Signal to Inter-ference plus Noise Ratio(SINR)
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。
MIMO技術可以有效地提高通信繫統的容量，但會帶來很嚴重的用戶間榦擾問題。預編碼技術以其能簡化接收機和抑製榦擾的作用將會在未來通信中扮縯著重要角色。將多數據流的預編碼矩陣設計轉換成單數據流預編碼矢量設計，提齣瞭基于信榦譟比最大的分佈式迭代算法，以及將虛擬信榦譟和最小均方誤差方法相結閤的迭代算法。數值倣真結果錶明提齣的算法可以有效提高繫統容量。
MIMO기술가이유효지제고통신계통적용량，단회대래흔엄중적용호간간우문제。예편마기술이기능간화접수궤화억제간우적작용장회재미래통신중분연착중요각색。장다수거류적예편마구진설계전환성단수거류예편마시량설계，제출료기우신간조비최대적분포식질대산법，이급장허의신간조화최소균방오차방법상결합적질대산법。수치방진결과표명제출적산법가이유효제고계통용량。
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. Simu-lation results are provided to demonstrate that the proposed designs are capable of significantly improving the system sum capacity.
