Research of BD_UCD_VBLAST for MU_MIMO Precoding Technique

To the precoding scheme of multi-user Multiple-input Multiple-output (MU-MIMO) communication system, Block Diagonalization (BD) is one of the linear precoding schemes with better performance and lower complexity. Because of the single use of zero-forcing method, the traditional BD scheme can not meet the requirements of the ideal performance. This paper presents one of Uniform Channel Decomposition (UCD) scheme which combined with the V-BLAST space-time coding scheme. We will give the system model and push out the detail process of the BD-UCD algorithm. At last, we will make a corresponding simulation using MATLAB. The analysis and Simulation diagram shows that this scheme has better BER performance and can better adapt to the high-correlated channels.