Traffic improvements in wireless communication networks using antenna arrays

A wireless network with beamforming capabilities at the receiver is conside red that allows two or more transmitters to share the same channel to commu nicate with the base station. A novel approach is introduced, which combine s the effects of the digital signal processing (adaptive beamforming) at th e physical layer with the traffic policies at the network layer on the over all queuing model of a cell. The effect of signal processing on the queuing model of the cell is represented by a parameter in the final cell model. E ach cell is modeled by a multiuser/multiserver service facility, where each server is a beamformed channel formed by the cell's base station. From thi s effective cell model, we find the closed form solutions for blocking prob abilities of the calls and total carried traffic in a wireless network with adaptive arrays. Our analytical as well as numerical results show that ada ptive beamforming at the receiver reduces the blocking probability of the c alls and increases the total carried traffic in the system.