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This paper investigates the performance of network non-orthogonal multipleaccess (N-NOMA) in a downlink coordinated multi-point (CoMP) system. In theconsidered N-NOMA scheme, multiple base stations (BSs) cooperatively serve aCoMP user, meanwhile, each BS serves additional NOMA users by occupying thesame resource block allocated to the CoMP user. The locations of the BSs andusers are modeled by stochastic geometric models and the interference from thewhole network is considered. Through rigorous derivations, the outageprobabilities achieved by the CoMP and NOMA users are obtained, respectively.Numerical results are provided to verify the accuracy of the analytical resultsand also demonstrate the superior performance of N-NOMA compared to orthogonalmultiple access (OMA) based CoMP scheme.

Stochastic Geometry Based Modeling and Analysis on Network NOMA in Downlink CoMP Systems