Modified QRD Precoding Method for MIMO Channels With Complete CSI
A new method for antenna selection in multiple-inputmultiple-output (or MIMO) systems is proposed. With reduced computational complexity and lower equipment cost, this method can effectively acquire many of the advantages of the MIMO systems. The best K out of M of the transmit antennas are sorted out using QRdecomposition on the channel matrix H which is sent back by the receiver via a feedback channel. The criterion for antenna selection is to maximize the diagonal elements of the upger triangular matrix R. And instead of selecting from the full combination of transmit antennas, adding one antenna at a time can quicken the process and simplify the implementation. Simulation result demonstrates reduced complexity with little performance degradation.
MIMO Channel State Information QR-decomposition transmit antenna selection Precoding
Li Gang
School of Software&Telecommunication Engineering Jangxi University of Finance and Economics Nanchang, China
国际会议
三峡
英文
1643-1645
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）