Distributed Power Control and Coding-Modulation Adaptation in Wireless Networks Using Annealed Gibbs Sampling

In wireless networks, the transmission rate of a link is determined by received signal strength, interference from simultaneous transmissions, and available coding-modulation schemes. Rate allocation is a key problem in wireless network design, but a very challenging problem because: wireless interference is global, i.e., a transmission interfere all other simultaneous transmissions, and the rate-power relation is non-convex and non-continuous, where the discontinuity is due to limited number of coding-modulation choices in practical systems. In this paper, the authors propose a distributed power control and coding-modulation adaptation algorithm using annealed Gibbs sampling, which achieves throughput optimality in an arbitrary network topology.

Provided by: Iowa State University Topic: Mobility Date Added: Aug 2011 Format: PDF

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