Minimum Energy Transmission Over a Wireless Channel With Deadline and Power Constraints
Name
Zafer-2009-Minimum Energy Transmission Over a Wireless Channel With Deadline and Power Constraints.pdf
Size
472.96 KB
Format
Adobe PDF
Checksum (MD5)
4c6b4880482d36f17583c6d10b104499
Author(s)
Zafer, Murtaza
Modiano, Eytan H.
Date Issued
November 2009
Journal
IEEE transactions on automatic control
Publisher
Institute of Electrical and Electronics Engineers / IEEE Control Systems Society
Citation
Zafer, M., and E. Modiano. “Minimum Energy Transmission Over a Wireless Channel With Deadline and Power Constraints.” Automatic Control, IEEE Transactions on 54.12 (2009): 2841-2852. Copyright © 2009, IEEE
Version
Final published version
Abstract
We consider optimal rate-control for energy-efficient transmission of data, over a time-varying channel, with packet-deadline constraints. Specifically, the problem scenario consists of a wireless transmitter with B units of data that must be transmitted by deadline T over a fading channel. The transmitter can control the transmission rate over time and the required instantaneous power depends on the chosen rate and the present channel condition, with limits on short-term average power consumption. The objective is to obtain the optimal rate-control policy that minimizes the total energy expenditure while ensuring that the deadline constraint is met. Using a continuous-time stochastic control formulation and a Lagrangian duality approach, we explicitly obtain the optimal policy and show that it possesses a very simple and intuitive form. Finally, we present an illustrative simulation example comparing the energy costs of the optimal policy with the full power policy.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/tac.2009.2034202
