Performance Index of the Outage Probability for Two-Relay Decode and Forward Cooperative Communications

Abstract

In this paper, a cooperative control algorithm is designed for mobile agents to disperse themselves optimally in maintaining communication quality and maximizing their coverage. The networked mobile agents locally form a virtual multiple-input multiple-output (MIMO) communication system, and they cooperatively communicate among them by using a decode and forward cooperative communication technique. The outage probability is used as the measure of communication quality, and it can be estimated in real-time. A general performance index balancing outage probability and spatial dispersion is chosen for the overall system. In this paper we consider a performance index balancing outage probability for the overall system performance. The two approaches are used to estimate and optimize the value of the performance index, and the cooperative formation control is applied to move the mobile agents to achieve the optimal outage probability solution by using only locally available information. Numerical analysis shows the best achieved relay-destination distances and coverage area of the cooperative systems for a certain threshold on the outage probability.