Peak Power and Interference Outage Probability Constrained Optimal Transmission Policy for Underlay Cognitive Radios

Kashyap, Salil and Mehta, Neelesh B (2013) Peak Power and Interference Outage Probability Constrained Optimal Transmission Policy for Underlay Cognitive Radios. In: 2013 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), DEC 09-13, 2013, Atlanta, GA, pp. 2039-2044.

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Abstract

In an underlay cognitive radio (CR) system, a secondary user (SU) can transmit even when the primary is on but under stringent constraints on the interference that it causes at the primary receiver (PRx). The interference constraint fundamentally influences and changes how the SU transmits. We develop a novel and optimal transmit power policy for an SU that minimizes its symbol error probability (SEP) when it is subject to two practically motivated constraints, namely, a peak transmit power constraint and an interference outage probability constraint. We derive new expressions for the SEP of the optimal transmit power policy for MPSK. Our results bring out the impact of several system parameters such as the peak transmit power, the target outage probability, the interference threshold, and the constellation size on the SEP of the CR system.

Item Type:	Conference Proceedings
Series.:	IEEE Global Telecommunications Conference (Globecom)
Publisher:	IEEE
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	25 Aug 2016 05:01
Last Modified:	25 Aug 2016 05:01
URI:	http://eprints.iisc.ac.in/id/eprint/54357

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