NDLI: Multi-channel power allocation based on market competitive equilibrium in cognitive radio networks

Content Provider	Springer Nature Link
Author	Lu, YanHui Mei, YaNan Wang, Wei Mu, XiaoMin Yang, ShouYi
Copyright Year	2014
Abstract	Cognitive radios such as intelligent phones and Bluetooth devices have been considered essential goods in next-generation communication systems. Such devices will have to share the same frequency band owing to the limited bandwidth resource. To improve spectrum efficiency, we formulate multi-channel power allocation as a market competitive equilibrium (CE) problem, and prove that its solution exists and is unique under the condition of weak interference. We then propose two distributed power allocation algorithms achieving CE, namely the fast convergent power allocation algorithm (FCPAA) and the social-fairness-aware FCPAA (SFAF). Theoretical analysis and simulation results demonstrate that the proposed algorithms lead to better system performance in terms of the guaranteed interference temperature constraint using the price mechanism instead of a strategy based on the Nash equilibrium. Moreover, it is shown that the FCPAA maximizes total utility, and converges more quickly than the method addressed in prior research with the help of improved round-robin rules. However, the FCPAA cannot ensure the same social fairness among secondary users as the SFAF scheme in both the non-fading channel and Rayleigh fading channel; the SFAF balances the individual utility by adjusting each user’s budget at the expense of a small quantity of system total throughput.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	1674733X
Journal	Science in China Series : Information Sciences
Volume Number	57
Issue Number	2
e-ISSN	18691919
Language	English
Publisher	Science China Press
Publisher Date	2014-05-28
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	cognitive radio rate allocation power allocation market competitive equilibrium Nash equilibrium Information Systems and Communication Service
Content Type	Text
Resource Type	Article
Subject	Computer Science

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