On the power efficiency of sensory and ad-hoc wireless networks

1 January 2003

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

Abstract

This paper discusses the power efficiency of a communications channel, i.e., the maximum bit rate that can be achieved per unit power (energy rate). For AWGN channels, it is well known that power efficiency is attained in the low SNR regime. In this paper we show that for a random sensory, or ad-hoc, wireless network with n users (nodes), with high probability converging to one as n grows, the power efficiency scales at least by a factor of /spl radic/n. In other words, each user in a wireless channel with n nodes can support the same communications rate as a single user system, but by expending only 1//spl radic/n the energy.

Keywords

This publication has 2 references indexed in Scilit:

On the asymptotic capacity of Gaussian relay networks
Published by Institute of Electrical and Electronics Engineers (IEEE) ,2003
The capacity of wireless networks
IEEE Transactions on Information Theory, 2000