WICAT Workshop on Cooperative Communications


Title: Resource Allocation for Fixed Outage Probability in Orthogonal Cooperative Transmission Systems
Author: D.R. Brown (Poster I, 5)

ABSTRACT

This research investigates optimal transmit energy allocation in a wireless communication system with two sources and one destination. The sources in the system each wish to transmit distinct information to a single destination through orthogonal fading channels with coherence time on the order of the delay constraints and cooperate via an orthogonal amplify-and-forward protocol. The sources are assumed to not have access to the channel state and allocate their selfish and cooperative transmit energies based only on knowledge of the average channel statistics. A general outage probability analysis for this scenario is presented and useful bounds are derived to facilitate analysis. The average total transmit energy required by each source to achieve fixed outage probability targets is analyzed as a function the amount of cooperation offered by each source. Numerical examples are presented for independent Rayleigh fading channels demonstrating that mutual cooperation can lead to a significant reduction in average total transmit energy required by each source to meet the outage probability targets.