Paper Info
Title
Capacity Scaling Of Ad Hoc Networks With Spatial Diversity
Abstract
This paper derives the exact outage probability and transmission capacity of ad hoc wireless networks with nodes employing multiple antenna diversity techniques. The analysis enables a direct comparison of the number of simultaneous transmissions achieving a certain data rate under different diversity techniques. Preliminary results derive the outage probability and transmission capacity for a general class of signal distributions which facilitates quantifying the gain for fading or non-fading environments. The transmission capacity is then given for uniformly random networks with path loss exponent alpha > 2 in which nodes: (1) perform maximal ratio transmission/combining on M antennas with Theta(M-2/alpha) gains; (2) various antenna selection combining schemes which give appreciable but rapidly diminishing gains; and (3) orthogonal space-time block coding, for which there is only a small gain due to channel hardening. It is concluded that in ad hoc networks, beamforming performs best, selection combining performs well for smaller numbers of antennas, and that space-time block coding offers only marginal gains.
Year
DOI
Venue
2007
10.1109/ISIT.2007.4557426
2007 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS, VOLS 1-7
Keywords
Field
DocType
ad hoc networks,wireless ad hoc network,antennas,channel coding,wireless networks,fading,block codes,interference,probability
Wireless network,Beamforming,Discrete mathematics,Topology,Antenna diversity,Computer science,Fading,Block code,Computer network,Communication channel,Interference (wave propagation),Wireless ad hoc network
Journal
Volume
Citations 
PageRank 
abs/cs/070
22
3.01
References 
Authors
29
3
Name
Order
Citations
PageRank
Andrew M. Hunter1363.91
Jeffrey G. Andrews2181021115.64
Steven Weber372453.55