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

Resource Allocation for Co-Primary Spectrum Sharing in MIMO Networks