Title :
The Impact of Channel Randomness on Coverage and Connectivity of Ad Hoc and Sensor Networks
Author :
Miorandi, Daniele
Author_Institution :
CREATE-NET, Trento
fDate :
3/1/2008 12:00:00 AM
Abstract :
In this paper, we first present an analytical procedure for the computation of the node isolation probability and coverage in an ad hoc network in the presence of channel randomness, with applications to shadowing and fading phenomena. These results are used to obtain an estimate of the connectivity features for very dense networks. Stochastic orderings are used to show the beneficial impact of lognormal shadowing and the negative impact of Rayleigh fading. The impact of SIMO/MISO and MIMO schemes is also addressed, showing how channel diversity can be exploited to enhance network coverage and connectivity.
Keywords :
MIMO communication; Rayleigh channels; ad hoc networks; probability; stochastic processes; wireless sensor networks; MIMO schemes; Rayleigh fading; SIMO/MISO schemes; ad hoc network; channel diversity; channel randomness; lognormal shadowing; network connectivity; network coverage; node isolation probability; sensor networks; stochastic orderings; very dense networks; Ad hoc networks; Computer networks; Large-scale systems; MIMO; Rayleigh channels; Sensor phenomena and characterization; Shadow mapping; Stochastic processes; Wireless networks; Wireless sensor networks;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2007.060842
