Optimum power allocation in a hierarchical spectrum sharing scheme

Zafer Beyaztas, Ashish Pandharipande, David Gesbert

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

10 Citations (Scopus)

Abstract

We consider a hierarchical spectrum sharing scheme wherein a secondary wireless system is allowed to share spectrum while maintaining priority for the primary system. Under this setting, we consider the problem of allocating transmit powers for the primary and secondary transmissions so as to maximize the sum rate of the two systems, while maintaining a minimum rate for the primary system. We determine the optimum power allocation for two cases corresponding to power values being (i) continuous real in a given range, and (ii) from a discrete set. We show that the optimal power allocation for both cases can be found to be one among a small set of points, and can be determined by an O(1) algorithm.

Original languageEnglish
Title of host publicationICC 2008 - 2008 IEEE International Conference on Communications Workshops, Workshops Proceedings
PublisherInstitute of Electrical and Electronics Engineers
Pages97-101
Number of pages5
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event2008 IEEE International Conference on Communications (ICC 2008) - Beijing, China
Duration: 19 May 200823 May 2008

Conference

Conference2008 IEEE International Conference on Communications (ICC 2008)
Country/TerritoryChina
CityBeijing
Period19/05/0823/05/08

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