NDLI: Optimal Power Allocation for Coordinated Transmission in Cognitive Radio Networks

Content Provider	IEEE Xplore Digital Library
Author	Yuefeng Li Zhi Chen Yu Gong
Copyright Year	2015
Description	Author affiliation: NCL, Univ. of Electron. Sci. & Technol. of China, Chengdu, China (Yuefeng Li; Zhi Chen) \|\| Sch. of Electron., Loughborough Univ., Loughborough, UK (Yu Gong)
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 source and relay nodes in CR with direct and relay link. We show that there is a significant benefit to the system rate by jointly distributing the transmitting power. Three schemes are considered, where particularly the scheme based on analogue network coding shows significant superior performance to other two classic schemes. The optimum power allocation is derived analytically. The proposed schemes are verified by the simulations which also show the impact of different positions of relay node and the primary user locations on power allocation solutions.
Starting Page	1
Ending Page	5
File Size	151002
Page Count	5
File Format	PDF
ISBN	9781479980888
DOI	10.1109/VTCSpring.2015.7145983
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-11
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Resource management Interference Cognitive radio Signal to noise ratio Throughput
Content Type	Text
Resource Type	Article

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