NDLI: Optimal power allocation for CR networks with direct and relay-aided transmissions

Content Provider	IEEE Xplore Digital Library
Author	Lu Lu Li, G.Y. Gang Wu
Copyright Year	2013
Description	Author affiliation: Sch. of ECE, Georgia Inst. of Technol., Atlanta, GA, USA (Lu Lu; Li, G.Y.) \|\| Nat. Key Lab. of Sci. & Technol. on Commun., UESTC, Chengdu, China (Gang Wu)
Abstract	Cognitive radio (CR) technology has been developed to solve the spectrum-underutilization problem. In CR networks, the CR users have opportunities to access the licensed spectrum bands assigned to the primary users (PUs). Since the PUs have priorities to use the bands, the CR users are not allowed to generate unacceptable interference to them. In this paper, we investigate power allocation schemes for CR networks with both direct and relay-aided transmissions. We formulate an overall rate optimization problem with interference constraints to the PU and peak power constraints at each node and obtain solutions by theoretical analysis. Numerical results are provided to show the impact of the relay node and the PU locations on power allocation.
Starting Page	2780
Ending Page	2784
File Size	231942
Page Count	5
File Format	PDF
ISBN	9781467331227
ISSN	15503607
DOI	10.1109/ICC.2013.6654960
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-09
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Resource management Signal to noise ratio Interference constraints Cognitive radio Direct and Relay-Aided Transmissions Cognitive Radio (CR) Network Optimal Power Allocation Interference Constraints
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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