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3rd International ICST Workshop on Resource Allocation in Wireless Networks

Research Article

Channel and Multiuser Diversities in Wireless Systems: Delay-Energy Tradeoff

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BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/WIOPT.2007.4480088,
        author={Prasanna Chaporkar and Kimmo Kansanen and Ralf R. Muller},
        title={Channel and Multiuser Diversities in Wireless Systems: Delay-Energy Tradeoff},
        proceedings={3rd International ICST Workshop on Resource Allocation in Wireless Networks},
        publisher={IEEE},
        proceedings_a={RAWNET},
        year={2008},
        month={3},
        keywords={Super-position coding  delay guarantees  multi-access channel  opportunistic scheduling  rate guarantees  stability},
        doi={10.1109/WIOPT.2007.4480088}
    }
    
  • Prasanna Chaporkar
    Kimmo Kansanen
    Ralf R. Muller
    Year: 2008
    Channel and Multiuser Diversities in Wireless Systems: Delay-Energy Tradeoff
    RAWNET
    IEEE
    DOI: 10.1109/WIOPT.2007.4480088
Prasanna Chaporkar1,*, Kimmo Kansanen1, Ralf R. Muller1
  • 1: Institute of Electronics and Telecommunications Norwegian University of Science and Technology
*Contact email: prasanna.chaporkar@gmail.com

Abstract

We consider a communication system with multi-access fading channel. Each user in the system requires certain rate guarantee. Our main contribution is to devise a scheduling scheme called "Opportunistic Super-position Coding"that satisfies the users' rate requirements. Using mean-field analysis, i.e., when the number of users go to infinity, we analytically show that the energy required to guarantee the required user rate can be made as small as required at the cost of a higher delay ("delay- energy tradeoff"). We explicitly compute the delay under the proposed scheduling policy and discuss how delay differentiation can be achieved. We extend the results to multi-band multi-access channel. Finally, all the results can be generalized in a straightforward fashion to broadcast channel because of the uplink-downlink duality.

Keywords
Super-position coding delay guarantees multi-access channel opportunistic scheduling rate guarantees stability
Published
2008-03-31
Publisher
IEEE
Modified
2011-07-28
http://dx.doi.org/10.1109/WIOPT.2007.4480088
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