Linear Precoding and Stream Combining for Rate Splitting in Multiuser MIMO Systems
André R. Flores, Rodrigo C. de Lamare, Bruno Clerckx
Abstract
This letter develops practical linear precoding and stream combining techniques for rate-splitting (RS) in multiuser multiple-input multiple-output (MIMO) systems. We propose linear combining techniques based on the Min-Max, the maximum ratio and the minimum mean-square error criteria along with Regularized Block Diagonalization (RBD) precoders for RS-based multiuser multiple-antenna systems. An analysis of the sum rate performance is carried out, leading to closed-form expressions. Simulations show that the proposed combining schemes offer a significant sum rate performance gain over conventional linear precoding schemes.
Topics & Concepts
PrecodingMIMOMathematicsBlock (permutation group theory)Computer scienceBit error rateAlgorithmMinimum mean square errorTelecommunicationsStatisticsDecoding methodsChannel (broadcasting)CombinatoricsEstimatorAdvanced MIMO Systems OptimizationCooperative Communication and Network CodingEnergy Harvesting in Wireless Networks