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Proceedings Paper

A decision and utility theory construct for dynamic spectrum access systems
Author(s): Todd W. Martin; Kuo-Chu Chang
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Paper Abstract

Dynamic Spectrum Access (DSA) networks seek to opportunistically utilize unused RF capacity rather than relying on static spectrum assignments. The networks change their spectrum access characteristics such as fre- quency, power, and modulation to adapt and allow for access to spectrum while not causing harmful interference to other spectrum users. An essential element of DSA system operation is decision-making under uncertainty due to incomplete or inaccurate situational awareness. This paper describes ongoing eorts in applying decision and utility theory constructs to DSA systems. The construct combines elements of communications theory, formal value and utility axioms of probability and decision theory, and constraint satisfaction. It provides a mechanism that allows DSA systems to quantitatively evaluate options for attaining the desired capacity subject to constraints in radio performance, uncertainty in spectrum dynamics, operating cost, and avoidance of harmful interference to other spectrum users. The resulting construct provides insight into DSA operational trades for evaluating, ranking, and selecting alternative solutions. A decision-theoretic construct is developed and analyzed to illustrate the methodology and resulting trades among alternative utility function classes.

Paper Details

Date Published: 3 May 2012
PDF: 13 pages
Proc. SPIE 8405, Defense Transformation and Net-Centric Systems 2012, 84050F (3 May 2012); doi: 10.1117/12.920794
Show Author Affiliations
Todd W. Martin, George Mason Univ. (United States)
Kuo-Chu Chang, George Mason Univ. (United States)

Published in SPIE Proceedings Vol. 8405:
Defense Transformation and Net-Centric Systems 2012
Raja Suresh, Editor(s)

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