MURAL - Maynooth University Research Archive Library



    Lifetime Optimization for Wireless Sensor Networks with Outage Probability Constraints


    Li, James C. F. and Dey, Subhrakanti (2006) Lifetime Optimization for Wireless Sensor Networks with Outage Probability Constraints. In: 12th European Wireless Conference 2006 - Enabling Technologies for Wireless Multimedia Communications. IEEE. ISBN 9783800729616

    [img]
    Preview
    Download (909kB) | Preview


    Share your research

    Twitter Facebook LinkedIn GooglePlus Email more...



    Add this article to your Mendeley library


    Abstract

    Due to the limited energy resources in a wireless sensor network (WSN), lifetime of a WSN is a key parameter. In this paper, we address a lifetime optimization problem of a wireless TDMA/CDMA sensor network for joint transmit power and rate allocations in a time-varying fast Rayleigh fading environment. The effect of fast fading is captured by including rate outage and link outage constraints on each link and a given time-slot. A resulting nonconvex problem is then reduced to an approximate convex optimization problem using an appropriate functional approximation and variable substitutions. This centralized problem is then solved by standard barrier-method based optimization algorithms. A partially distributed algorithm is also provided to illustrate how most of the computations can be done locally at each node in a decentralized manner. The novelty of the paper lies in considering fast fading channels via outage probability constraints for the first time in lifetime maximization problems and obtaining a better convex approximation than previously used approximations in the literature. Simulation results illustrate that our centralized algorithm results in optimal power and rate allocations that result in a substantially extended lifetime of the WSN compared to previously published algorithms. The convergence of the partially distributed algorithms to the optimal power and rate solutions is also illustrated.

    Item Type: Book Section
    Additional Information: Cite as: J. C. F. Li and S. Dey, "Lifetime Optimization for Wireless Sensor Networks with Outage Probability Constraints," 12th European Wireless Conference 2006 - Enabling Technologies for Wireless Multimedia Communications, 2006, pp. 1-7.
    Keywords: Multiaccess; communication; lifetime; optimization; wireless sensor networks; outage; probability constraints;
    Academic Unit: Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 14459
    Depositing User: Subhrakanti Dey
    Date Deposited: 25 May 2021 13:49
    Publisher: IEEE
    Refereed: Yes
    URI:
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

    Repository Staff Only(login required)

    View Item Item control page

    Downloads

    Downloads per month over past year

    Origin of downloads