NDLI: A Distributed Algorithm for Resource Allocation in OFDM Cognitive Radio Systems

Content Provider	IEEE Xplore Digital Library
Author	Yonghong Zhang Leung, C.
Copyright Year	1967
Abstract	We study the problem of allocating subchannels, bits, and powers in a cognitive radio system, in which available system resources are highly dynamic. The modulation scheme employed is orthogonal frequency-division multiplexing (OFDM). In a resource-limited situation under which the nominal-rate requirements of users cannot be satisfied, it is desirable to provide fair degradation among users. In a situation with abundant resources, we may choose to maximize system throughput while ensuring that user nominal-rate requirements are met. The problem is formulated as a single objective nonlinear optimization problem using techniques from goal programming. A distributed resource allocation algorithm is proposed and shown to provide good fairness. In resource-abundant situations, the proposed distributed algorithm yields significantly better system throughput compared with the proportional-rate algorithm.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	546
Ending Page	554
Page Count	9
File Size	642017
File Format	PDF
ISSN	00189545
Volume Number	60
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Interference Resource management Bit rate Distributed algorithms Throughput Degradation resource allocation Ad hoc systems cognitive radio (CR) distributed algorithm goal programming orthogonal frequency-division multiplexing (OFDM)
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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