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Transmission capacity of wireless ad hoc networks with outage constraints
Journal article   Peer reviewed

Transmission capacity of wireless ad hoc networks with outage constraints

S.P Weber, Xiangying Xiangying Yang, J.G Andrews and G de Veciana
IEEE transactions on information theory, v 51(12), pp 4091-4102
Dec 2005
DOI: https://doi.org/10.1109/TIT.2005.858939

Abstract

Additives Spread spectrum communication Tail Frequency Propagation losses Ad hoc networks Multiaccess communication stochastic geometry Capacity planning Mobile ad hoc networks Signal to noise ratio capacity
In this paper, upper and lower bounds on the transmission capacity of spread-spectrum (SS) wireless ad hoc networks are derived. We define transmission capacity as the product of the maximum density of successful transmissions multiplied by their data rate, given an outage constraint. Assuming that the nodes are randomly distributed in space according to a Poisson point process, we derive upper and lower bounds for frequency hopping (FH-CDMA) and direct sequence (DS-CDMA) SS networks, which incorporate traditional modulation types (no spreading) as a special case. These bounds cleanly summarize how ad hoc network capacity is affected by the outage probability, spreading factor, transmission power, target signal-to-noise ratio (SNR), and other system parameters. Using these bounds, it can be shown that FH-CDMA obtains a higher transmission capacity than DS-CDMA on the order of M/sup 1-2//spl alpha//, where M is the spreading factor and /spl alpha/>2 is the path loss exponent. A tangential contribution is an (apparently) novel technique for obtaining tight bounds on tail probabilities of additive functionals of homogeneous Poisson point processes.

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385 citations in Web of Science
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Collaboration types
Domestic collaboration
Web of Science research areas
Computer Science, Information Systems
Computer Science, Theory & Methods
Engineering, Electrical & Electronic
Mathematics, Applied
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