期刊名称：International Journal of New Computer Architectures and their Applications
印刷版ISSN：2220-9085
出版年度：2011
卷号：1
期号：1
页码：223-235
出版社：Society of Digital Information and Wireless Communications
摘要：Block diagonalization (BD) technique is widely used in multiple input multiple output (MIMO) multiuser downlink systems because of its simplicity and high ability for eliminating the interuser interferences. In this study, very simple weight design algorithms based on BD are proposed, in which the order of steps is swapped, namely, receiver weights are calculated first, and then transmisson weights are derived using zero forcing (ZF) approach. It is shown through computer simulations that the proposed method achieves better performance that the conventional BD under certain conditions. Additionally, the condition on the degrees of freedom is released, hence it can be utilized for the transmitters with small number of antennas to which BD cannot be applied.
