Robust OSEMM-LQ Interference Management Technique for Ultra-Dense Heterogeneous Networks

Abstract

Performance of MIMO precoder for ultra-dense HetNets can be hindered by a lack of accurate channel state information. A novel two stage precoding scheme, known as Orthogonalized Sparsity Enhanced Mismatch Model-LQ (OSEMM-LQ) precoding, is proposed herein. Simulation results have shown it can achieve higher receive signal power and BER performance compared to the recently proposed SEMM and conventional norm ball mismatch model (NBMM) precoding schemes.