摘要
基于无线移动衰落信道下的多天线系统(Multiple Input Multiple Output,MIMO)传输模型和信号周期平稳特性理论,研究了基于垂直分层空时码(Vertical Bell Laboratories Layered Space Time,V-BLAST)技术的MIMO信号的周期平稳特性。理论分析和仿真结果显示:衰落信道下的MIMO系统接收信号具有周期平稳特性,如果对接收信号进行过抽样,则可以获得具有周期平稳特性的接收序列,从而可以利用周期平稳特性理论进行数字化的信号处理。
In this paper, the cyclostationarity property of the V-BLAST MIMO signal is examined based on the model of MIMO system in the wireless communication channel and the theory of cyclostationarity. Mathematical deduction and simulation results are both shown that the received MIMO signal is cyclostationary. Meanwhile, if the received signal is oversampled, a cyclostationary sequence can be obtained, so that designing a cyclostationarity-based blind algorithm in MIMO systems is possible.
出处
《信息与电子工程》
2007年第5期334-338,共5页
information and electronic engineering
基金
福建省教育厅MIMO OFDM下-代通信系统的信道估计和应用研究科技项目(JB06063)
福州大学人才基金(XRC-0641)
