Spatial Multiplexing in Random Wireless Networks

Date Added: Apr 2010
Format: PDF

The authors consider a network of transmitters, each with a receiver at a fixed distance, and locations drawn independently according to a homogeneous Poisson Point Process (PPP). The transmitters and the receivers are equipped with multiple antennas. Under a channel model that includes Rayleigh fading and path-loss, and an outage model for packet successes, they examine the performance of various spatial multiplexing techniques, namely Zero-Forcing (ZF), ZF with Successive Interference Cancellation (ZF-SIC or VBLAST) and DBLAST. In each case, they determine the number of streams that maximizes the transmission capacity, defined as the maximum network throughput per unit area such that a constraint on the outage probability is satisfied.