SVD Assisted Joint Transmitter and Receiver Design for the Downlink of MIMO Systems

In this treatise, we propose a novel singular value decomposition (SVD) based downlink (DL) multiuser MIMO system, which takes into account the specific characteristics of the individual users channel matrix, instead of treating all the users channels jointly, as in the traditional minimum mean square error (MMSE) or zero-forcing (ZF) multiuser transmission (MUT) technique. Furthermore, two different power allocation schemes are investigated in the context of the proposed structure. One of them was designed for achieving the maximum information rate, while the other for maintaining maximum signal-to-noise ratio (SNR). The simulation results demonstrate that the BER performance of the proposed structure combined with the maximum SNR based power allocation policy is better than that of the traditional equal-power policy employed in the DL.