Outage Probability of Repetition Coding Based Adaptive Decode-and-Forward Protocol for Cooperative Communications

Abstract

Cooperative communications has been introduced to mitigate the wireless channel effects on the message being received at the destination. Cooperative communication is a mode of transmission where the transmitting users receive message from its surroundings, process it, and repeat some encoded information to the destination to exploit spatial diversity. Considering the fact that the channel between the cooperating users is not always good enough and as a solution some adaptive relaying protocols have been introduced. In this paper, we propose a scheme in which we introduce a dedicated relay to complement the partner user in cooperative communications setup which can not decode the message transmitted from the other user. The analytical as well as simulated results show that the proposed scheme offers higher resistance to the unreliability of the wireless channel as compared to the classical adaptive protocols