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