Joint power control and relay design in underlay cognitive networks with multiple transmitter-receiver pairs

Keyvan Zarifi, Sofiène Affes, Ali Ghrayeb

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

1 Citation (Scopus)

Abstract

We consider an underlay cognitive network with L transmitter-receiver pairs and K relays in a two-hop half-duplex cooperative scheme. While the transmitters use a shared channel to transmit to the relays, the relays use either a shared channel or L orthogonal channels to communicate with the L receivers. For both second-hop-channel cases, we jointly determine the transmitters' powers and the relaying weights that maximize the worst signal-to-interference-plus-noise ratio subject to the transmitters' total and individual and the relays' total power constraints while guaranteeing that the interference powers on M existing primary users are below some required thresholds.

Original languageEnglish
Title of host publicationConference Record of the 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
Pages1216-1221
Number of pages6
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011 - Pacific Grove, CA, United States
Duration: 6 Nov 20119 Nov 2011

Other

Other45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
CountryUnited States
CityPacific Grove, CA
Period6/11/119/11/11

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Keywords

  • beamforming
  • Cognitive network
  • cooperative system
  • multiple source-destination system
  • power control

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

Cite this

Zarifi, K., Affes, S., & Ghrayeb, A. (2011). Joint power control and relay design in underlay cognitive networks with multiple transmitter-receiver pairs. In Conference Record of the 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011 (pp. 1216-1221). [6190209] https://doi.org/10.1109/ACSSC.2011.6190209