Distributed Interference Alignment in Cellular Systems: Analysis and Algorithms

Inhalt:
A fading environment is assumed and the degrees of freedom of a cellular system with an arbitrary number of base stations and users is determined. The base stations and users may have multiple antennas. Algorithms, which are based on alternating the optimization of the receive filters and transmit precoders, are proposed and shown to achieve the optimal degrees of freedom under certain conditions. Simulations sustain the analytic results and demonstrate the superior performance of the proposed algorithms.