Optimal transmission policies over vector Gaussian broadcast channels with energy harvesting transmitters

Omur Ozel, Jing Yang, Sennur Ulukus

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

Abstract

We consider an energy harvesting transmitter sending messages to two users over a vector broadcast channel. Energy required for communication arrives (is harvested) at the transmitter and a finite-capacity battery stores it before being consumed for transmission. Under off-line knowledge of energy arrivals, we obtain the trade-off between the performances of the users by characterizing the maximum departure region in a given interval. We show that the optimal total transmit power policy that achieves the boundary of the maximum departure region is the same as the optimal policy for the scalar single-user channel, which does not depend on the priorities of the users. The optimal total transmit power is found by a directional water-filling algorithm and the optimal splitting of the power among the users and the parallel channels is performed in each epoch separately.

Original languageEnglish (US)
Title of host publicationConference Record of the 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
Pages3-7
Number of pages5
DOIs
Publication statusPublished - Dec 1 2011
Event45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011 - Pacific Grove, CA, United States
Duration: Nov 6 2011Nov 9 2011

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Other

Other45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
CountryUnited States
CityPacific Grove, CA
Period11/6/1111/9/11

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All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Networks and Communications

Cite this

Ozel, O., Yang, J., & Ulukus, S. (2011). Optimal transmission policies over vector Gaussian broadcast channels with energy harvesting transmitters. In Conference Record of the 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011 (pp. 3-7). [6189943] (Conference Record - Asilomar Conference on Signals, Systems and Computers). https://doi.org/10.1109/ACSSC.2011.6189943