Cooperative Relaying Protocol using Fountain Codes under Interference Constraint Networks

Abstract

In this paper, we propose a cooperative relaying protocol using Fountain codes for secondary network under interference constraint.In the proposed protocol, a secondary source uses Fountain codes to transmit its message to a secondary destination with help of a secondary relay.The secondary source and relay operate in the underlay model, in which they must adapt their transmit power so that the interference caused at a primary user is lower than an allowable threshold.To evaluate performance of the proposed protocol, we derive the expressions of average number of transmission times over Rayleigh fading channel.Various Monte-Carlo simulations are presented to verify the derivations.