ARBITARY DISTRIBUTED SHADOWING FOR IMPROVING QUALITY OF REAL TIME STREAMING IN WIRELESS CELLULAR NETWORKS?

This paper gives numerically tractable, explicit integral expressions for the distribution of the signal-to-interferenceand- noise-ratio (SINR) experienced by a typical user in the downlink channel from the k-th strongest base stations of a cellular network modeled by Poisson point process on the plane. Our signal propagation-loss model comprises of a power-law path- loss function with arbitrarily distributed shadowing, independent across all base stations, with and without Rayleigh fading. Our results are valid in the whole domain of SINR, in particular for SINR < 1, where one observes multiple coverage. In multiple access channels, when users know each other’s channels, precoders can be designed utilizing channel information to cancel the interference at the receiver without sacrificing the diversity or the complexity of the system. Recently, it was shown those when there are only two users, a receiver can completely cancels the interference of the two users and provide full diversity for each user. Unfortunately, the scheme only works for two users. In this paper, we extend the scheme to more than 2 users. We also analytically prove that our system provides full diversity to each user. Simulation results confirm our analytical proof and show that our proposed scheme outperforms other existing interference cancellation schemes. In this latter aspect our paper complements previous studies reported in [1].