Optimal Cooperative Wireless Transmission with Limited Channel State Information

Jalal Habibi, Ali Ghrayeb, Amir G. Aghdam

Research output: Contribution to journalArticle

5 Citations (Scopus)


This paper tackles the problem of minimum-energy cooperative transmission in wireless networks under the assumption of limited channel state information at the transmitters. It is assumed that only the average statistics of the fading channels are known to the transmitters. The objective here is to jointly optimize the set of relays and the transmission powers for both the broadcasting and cooperative transmission phases while satisfying probabilistic signal-to-noise ratio (SNR) constraints at the relays and at the destination node. Increasing the broadcasting power expands the set of potential relays and decreases the required power for cooperative transmission. Hence, there is a compromise in the selection of the power values, which is addressed in this work using a chance-constrained optimization framework. A closed-form approximate solution is also presented, which provides a low-complexity transmission scheme for energy-harvesting wireless networks. Simulations are presented to demonstrate the efficacy of the proposed approach and the approximate solution.

Original languageEnglish
Article number7286778
Pages (from-to)4768-4783
Number of pages16
JournalIEEE Transactions on Communications
Issue number12
Publication statusPublished - 1 Dec 2015



  • Cooperative communications
  • imperfect channel state information
  • optimization
  • relay networks

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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