Spatial Interference Cancelation for Mobile Ad Hoc Networks: Perfect CSI

Abstract--Interference between nodes directly limits the capacity of mobile ad hoc networks. This paper focuses on spatial interference cancelation with perfect channel state information (CSI), and analyzes the corresponding network capacity. Specifically, by using multiple antennas, zero-forcing beamforming is applied at each receiver for canceling the strongest interferers. Given spatial interference cancelation, the network transmission capacity is analyzed in this paper, which is defined as the maximum transmitting node density under constraints on outage and the signalto-interference-noise ratio. Assuming the Poisson distribution for the locations of network nodes and spatially i.i.d. Rayleigh fading channels, mathematical tools from stochastic geometry are applied for deriving scaling laws for transmission capacity. Specifically, for small target outage probability, transmission capacity is proved to increase following a power law, where the exponent is the inverse of the size of...

• Type: Journal
• Year: 2008
• Where: CORR
• Authors: Kaibin Huang, Jeffrey G. Andrews, Robert W. Heath Jr., Dongning Guo, Randall A. Berry
• Keywords: CORR 2008, Education, Mobile Ad Hoc Networks, Spatial Interference Cancelation, Transmission Capacity