Relay assisted spectrum sharing in cognitive radio networks

Zhe Wang, Wei Zhang, Khaled Letaief

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

In this paper, we propose a relay assisted spectrum sharing (RASS) scheme based on the mixed sharing strategy in cognitive radio networks. Mixed sharing is a more general sharing strategy which provides a higher spectrum utilization efficiency than underlay sharing and interweave sharing. Compared to conventional mixed sharing, the proposed approach enhances the throughput of secondary users while not causing harmful interference to the primary receiver. The optimal time allocation which maximizes the achievable capacity of the secondary system is derived. At the same time, the existence of the optimal sensing time is proved and the optimal sharing time allocation between the two-hop relay links is presented. Numerical results show that there exists global optimal time allocation for sensing and sharing in the proposed RASS scheme.

Original languageEnglish
Title of host publication2012 IEEE International Conference on Communications, ICC 2012
Pages4431-4435
Number of pages5
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada
Duration: 10 Jun 201215 Jun 2012

Other

Other2012 IEEE International Conference on Communications, ICC 2012
CountryCanada
CityOttawa, ON
Period10/6/1215/6/12

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Wang, Z., Zhang, W., & Letaief, K. (2012). Relay assisted spectrum sharing in cognitive radio networks. In 2012 IEEE International Conference on Communications, ICC 2012 (pp. 4431-4435). [6364556] https://doi.org/10.1109/ICC.2012.6364556