Outage-Based Rate Maximization in CDMA Wireless Networks
Source: University of California
The problem of maximizing the sum of the transmit rates while limiting the outage probability below an appropriate threshold is investigated for networks where the nodes have limited processing capabilities. The authors focus on CDMA wireless network whose rates are characterized under mixed Rayleigh-lognormal fading. The outage probability is given implicitly by a complex function so that solving the optimization problem requires substantial computing. In this paper, they propose a novel explicit approximation of this function that allows solving the problem in an affordable manner. They propose two solutions of the maximization problem with the simplified outage probability constraint: one solves the problem using mixed integer-real programming.