NDLI: Power allocation in OFDM-based cognitive relay networks

Content Provider	IEEE Xplore Digital Library
Author	Kaiser, M.S. Ahmed, K.M. Ali Shah, R.
Copyright Year	2010
Description	Author affiliation: Telecommunication FoS, Asian Institute of Technology, Thailand (Kaiser, M.S.; Ahmed, K.M.; Ali Shah, R.)
Abstract	This paper investigates power allocation in OFDM-based cognitive relay networks. Relay-assisted cognitive radio network (RCRN) combines diversity gain with spectral sharing technique and improves the spectrum utilization efficiency. A secondary user (SU) shares radio resources of a primary user (PU) under the condition that interferences from SU to PU is below a specific threshold. We formulate a power allocation optimization problem that maximizes the spectral efficiency of RCRN under total transmit-peak and total transmit-average interference power constrains. Numerical results show that RCRN provides significant performance improvement over single hop CRN (SCRN).
Starting Page	202
Ending Page	206
File Size	1399628
Page Count	5
File Format	PDF
ISBN	9781424458509
e-ISBN	9781424458493
DOI	10.1109/WCINS.2010.5541734
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectral efficiency OFDM Licenses Diversity methods Waterfilling RCRN Cognitive radio Relays Interference constraints Constraint optimization Wireless networks Peak and average interference and power allocation Power system relaying Data communication
Content Type	Text
Resource Type	Article

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