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Distributed execution of cognitive relaying with time incentive: multiple PU scenario

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Title Distributed execution of cognitive relaying with time incentive: multiple PU scenario
 
Creator NADKAR, T
THUMAR, V
DESAI, UB
MERCHANT, SN
 
Subject Cognitive radio
Symbiotic cooperative relaying
Cross-layer optimization
Distributed algorithms
OFDM
OPTIMIZATION
NETWORKS
RADIO
 
Description The prime focus of this study is in developing distributed algorithms for cognitive relaying with time incentive for multiple primary users (CRTI-M). CRTI-M is a symbiotic paradigm in which the incumbent primary users (PUs) of the spectrum, with weak transmission links, seek cooperation from the cognitive secondary user (SU) nodes in their vicinity, and in return reward them with an incentive time for the latter's own communication. When relaying through the SU network, each PU can either use its own spectrum or that of the other PUs. Cross-layer optimization problems are formulated to enable both these possibilities in a multi-hop multi-channel cognitive radio network with the objective of maximizing the cumulative time incentive for the SUs. Corresponding distributed algorithms are developed, which face the challenge of meeting the constraints of the formulated problems with only local information and the lack of a centralized controller. Further, to make the CRTI-M schemes practically realizable, a MAC scheduling protocol is suggested, which gives emphasis to the distributed implementation and provides a unified framework for the PUs and SUs. Simulation results are furnished to demonstrate the effectiveness of the proposed algorithms.
 
Publisher SPRINGER INTERNATIONAL PUBLISHING AG
 
Date 2014-10-15T14:31:12Z
2014-10-15T14:31:12Z
2012
 
Type Article
 
Identifier EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING,
http://dx.doi.org/10.1186/1687-1499-2012-332
http://dspace.library.iitb.ac.in/jspui/handle/100/15108
 
Language en