  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.

Networking and Internet Architecture