Tradeoff of average power and average delay for a point-to-point link with fading

Sukumaran, Vineeth Bala and Mukherji, Utpal (2013) Tradeoff of average power and average delay for a point-to-point link with fading. In: 2013 National Conference on Communications (NCC), 15-17 Feb. 2013, New Delhi, India.

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Abstract

We consider a discrete time system with packets arriving randomly at rate lambda per slot to a fading point-to-point link, for which the transmitter can control the number of packets served in a slot by varying the transmit power. We provide an asymptotic characterization of the minimum average delay of the packets, when average transmitter power is a small positive quantity V more than the minimum average power required for queue stability. We show that the minimum average delay will grow either as log (1/V) or 1/V when V down arrow 0, for certain sets of values of lambda. These sets are determined by the distribution of fading gain, the maximum number of packets which can be transmitted in a slot, and the assumed transmit power function, as a function of the fading gain and the number of packets transmitted. We identify a case where the above behaviour of the tradeoff differs from that obtained from a previously considered model, in which the random queue length process is assumed to evolve on the non-negative real line.

Item Type:	Conference Paper
Series.:	National Conference on Communications NCC
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE.
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	30 Jul 2013 12:07
Last Modified:	30 Jul 2013 12:07
URI:	http://eprints.iisc.ac.in/id/eprint/46930

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