Energy-efficient cooperative communications for multimedia applications in multi-channel wireless networks

Peng Li, Song Guo, Jiankun Hu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)


The dramatic growth of mobile multimedia communications imposes new requirements on quality-of-service and energy efficiency in wireless networks. In this paper, we study the energy- and spectrum-efficient cooperative communication (ESCC) problem by exploiting the benefits of cooperative communication (CC) for mobile multimedia applications in multi-channel wireless networks.In a static network, it is formulated as a mixed-integer nonlinear programming problem. To solve this problem, we use linearizationand reformulation techniques to transform it into a mixed-integer linear programming problem that is solved by a branch-and-bound algorithm with enhanced performance. To deal with the problem in dynamic networks, we propose an online algorithm with lowcomputational complexity and deployment overhead. Extensive simulations are conducted to show that the proposed algorithmcan significantly improve the performance of energy efficiency in both static and dynamic networks.
Original languageEnglish
Article number6871358
Pages (from-to)1670-1679
Number of pages10
JournalIEEE Transactions on Computers
Issue number6
Publication statusPublished - 1 Jun 2015
Externally publishedYes

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computational Theory and Mathematics


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