Optimization of ARQ Protocols in Interference Networks With QoS Constraints

Free registration required

Executive Summary

The authors study optimal transmission strategies in wireless networks with interference, under Quality of Service constraints. A buffered, dynamic network with multiple sources is considered, and sources use a retransmission strategy in order to improve packet delivery probability. The optimization problem is formulated as a Markov Decision Process, where constraints and objective functions are ratios of time-averaged cost functions. The optimal strategy is found as the solution of a Linear Fractional Program, where the optimization variables are the steady-state probability of state-action pairs. Numerical results illustrate the dependence of optimal transmission/interference strategies on the constraints imposed on the network.

  • Format: PDF
  • Size: 189.8 KB