Cooperative overlay cognitive radio with opportunistic link selection

Ammar Zafar, Mohammad Shaqfeh, Mohamed Slim Alouini, Hussein Alnuweiri

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

3 Citations (Scopus)

Abstract

This papers studies opportunistic scheduling for causal overlay cognitive radios where the secondary source cooperates with the primary source. The secondary source is equipped with a buffer and can store the data it receives from the primary source. The target is to maximize the long term secondary rate under constraints on the long term primary rate and to ensure buffer stability. An optimal opportunistic scheduling policy is derived by solving the constrained optimization problem which fully exploits the available diversity gains due to cooperation and buffering. Numerical results show that the optimal scheme enlarges the achievable rate region compared to a benchmark scheme which does not utilize cooperation between the primary and secondary sources.

Original languageEnglish
Title of host publication10th International Symposium on Wireless Communication Systems 2013, ISWCS 2013
PublisherIEEE Computer Society
Pages254-258
Number of pages5
ISBN (Print)9783800735297
Publication statusPublished - 2013
Event10th IEEE International Symposium on Wireless Communication Systems 2013, ISWCS 2013 - Ilmenau, Germany
Duration: 27 Aug 201330 Aug 2013

Other

Other10th IEEE International Symposium on Wireless Communication Systems 2013, ISWCS 2013
CountryGermany
CityIlmenau
Period27/8/1330/8/13

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Keywords

  • Buffer-aided relay
  • Cooperative relaying
  • Opportunistic scheduling
  • Overlay cognitive radio

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

Cite this

Zafar, A., Shaqfeh, M., Alouini, M. S., & Alnuweiri, H. (2013). Cooperative overlay cognitive radio with opportunistic link selection. In 10th International Symposium on Wireless Communication Systems 2013, ISWCS 2013 (pp. 254-258). IEEE Computer Society.