Channel Inversion Schemes with Compensation Network for Two-Element Compact Array in Multi-User MIMO

Maxwell Oppong Afriyie, Obour Agyekum Kwame Opuni-Boachie, Affum Emmanuel Ampoma
2017 Advances in Science, Technology and Engineering Systems  
In this paper, we investigate the performance of channel inversion schemes for interference cancellation with compensation network in multi-user MIMO broadcasting channel. To achieve good performance, mutual coupling between two-element compact arrays is characterized by the receiving mutual impedance method (RMIM) to formulate the compensation network-operating matrix. A prototype of two-element compensation network with an insertion loss between input and output ports better than 11 dB is
more » ... r than 11 dB is fabricated. We demonstrate results to confirm that output voltages of decoupling network can effectively be removed off the coupling effect. A typical standard MIMO channel model is presented, and system performance is evaluated when coupling effects existed and after decoupling process. Bit error performance results also indicate the promising potentials of regularized channel inversion scheme with efficient decoupling scheme in massive MIMO system.
doi:10.25046/aj020404 fatcat:5t4d6qbr4bfrxf6c4m6qhosh5q