Resource Exchange in Smart Grid Connected Cooperative Cognitive Radio Networks

Wireless telecommunications is experiencing a massive penetration of wireless devices and an exponential growth in wireless applications. To accommodate the expected service requirements with the available radio resources, we present a new radio resource exchange scheme for a smart grid connected co...

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Bibliographic Details
Published inIEEE transactions on vehicular technology Vol. 66; no. 7; pp. 6291 - 6298
Main Authors Xueqing Huang, Ansari, Nirwan
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Base stations
Cognitive radio
Cooperation
Cooperative communications
Energy conservation
Energy storage
Exchange schemes
Green products
on-grid energy credit
Optimization
Power control
radio resource exchange
Relays
Smart grid
Smart grids
Utilities
Wireless communications
Wireless networks
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Summary:Wireless telecommunications is experiencing a massive penetration of wireless devices and an exponential growth in wireless applications. To accommodate the expected service requirements with the available radio resources, we present a new radio resource exchange scheme for a smart grid connected cognitive radio system, in which independently harvested energy can be stored in the smart grid in the form of on-grid credit. The secondary system will gain spectrum usage by either forwarding primary data or transferring energy credit directly to the primary system. In particular, to maximize the overall energy saving while meeting the throughput requirement, the utilities of both systems are optimized by jointly designing the subchannel assignment scheme with power control. First, for any given subchannel assignment, we have derived the optimal power allocated by both primary and secondary systems to each subchannel. Then, the characteristics of the subchannel assignment scheme are analyzed, and the complexity of finding the optimal assignment is reduced. Finally, a novel joint subchannel assignment and power control scheme is proposed to decide whether and how to cooperate by comparing the utilities of both systems with and without cooperation. Simulations results are presented to verify the optimality of the derived scheme.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2016.2642902