Optimal power allocation over parallel relay channels with orthogonal regenerative decode-and-forward strategy

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

2 Citations (Scopus)


We consider the problem of optimal power allocation over a family of parallel Gaussian relay channels, each with a different set of channels' power gains. The applied cooperative strategy is half-duplex regenerative decode-and-forward which is multiplexed orthogonally with a direct transmission link from the source node to the destination node. We assume the availability of channel-state-information of the three links in every channel realization. We obtain a characterization of the optimal solution which includes the power allocated for each channel realization as well as the power allocated to the source node and the relay node so that the long-term average total transmitted power constraint is maintained. The solution has a simple structure and can be applied practically in relay-assisted wireless systems.

Original languageEnglish
Title of host publication2011 IEEE GCC Conference and Exhibition, GCC
Number of pages4
Publication statusPublished - 2011
Event2011 IEEE GCC Conference and Exhibition, GCC 2011 - Dubai, United Arab Emirates
Duration: 19 Feb 201122 Feb 2011


Other2011 IEEE GCC Conference and Exhibition, GCC 2011
CountryUnited Arab Emirates



  • Channel Allocation
  • Information Theory
  • Wireless Communication

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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