Resource Allocation for Co-Primary Spectrum Sharing in MIMO Networks

TL;DR

This paper investigates resource allocation strategies in MIMO small cell networks sharing spectrum co-operatively, proposing joint precoder and decoder design to maximize weighted sum rate under complex interference conditions.

Contribution

It introduces a novel joint precoder and decoder design approach for spectrum sharing in MIMO networks, utilizing stable marriage algorithms for subcarrier allocation.

Findings

Gale-Shapley algorithm effectively allocates subcarriers.

Joint precoder and decoder design improves sum rate performance.

Simulation results validate the proposed resource allocation method.

Abstract

We study co-primary spectrum sharing concept in two small cell multiuser network. Downlink transmission is explored with Rayleigh fading in interfering broadcast channel. Both base stations and all the users are equipped with multiple antennas. Resource allocation with joint precoder and decoder design is proposed for weighted sum rate (WSR) maximization problem. The problem becomes mixed-integer and non-convex. We factor the main objective problem into two subproblems. First subproblem is multiuser with subcarrier allocation where we assume that each subcarrier can be allocated to multiple users. Gale-Shapley algorithm based on stable marriage problem and transportation method are implemented for subcarrier allocation part. For the second subproblem, a joint precoder and decoder design is proposed to obtain the optimal solution for WSR maximization. Monte Carlo simulation is employed to obtain the results.