Multi-relay DF cooperative communication system based on directional antenna

The multi-relay cooperative communication system with improved best relay selection and decode-and-forward (DF) strategy based on directional antenna is investigated. For the mobility of the locations of the relays are essential random, the homogeneous Poisson point process with fixed density are considered. The exact performance expression of outage probability is derived through theoretical deduction. The effects of the Rayleigh fading and the distance attenuation are also considered simultaneously. The accuracy simulations of the relationship between the outage probability and different parameters are carried out. The power allocation between the source node and the relay node is also discussed.