A family of power allocation schemes achieving high Secondary User rates in spectrum sharing OFDM cognitive radio

We propose a family of Secondary User (SU) power allocation schemes in spectrum sharing OFDM cognitive radio networks. The SU sum rates are maximized subject to a protection criterion for the Primary Users (PU) expressed through a utility function. We demonstrate that a specific choice of utility fu...

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Bibliographic Details
Published in2012 IEEE Global Communications Conference (GLOBECOM) pp. 1144 - 1149
Main Authors Chowdhury, M., Singla, A., Chaturvedi, A. K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2012
Subjects
Cognitive radio
Distributed algorithms
OFDM
Optimization methods
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Summary:We propose a family of Secondary User (SU) power allocation schemes in spectrum sharing OFDM cognitive radio networks. The SU sum rates are maximized subject to a protection criterion for the Primary Users (PU) expressed through a utility function. We demonstrate that a specific choice of utility function leads to the maximization of weighted sum rate of all users, the weight being linked to a guarantee on the PU sum rate. Our formulation also allows trading off individual PU guarantees for higher SU sum rates, with a recently proposed scheme imposing individual PU Rate Loss guarantees being a limiting case.
ISBN:1467309206
9781467309202
ISSN:1930-529X
DOI:10.1109/GLOCOM.2012.6503267