A novel approach for the link design of amplify and forward Wireless cooperative communication to mitigate fading effects

Cibile K Kanjirathumkal

Government College of Engineering, Kannur, India

: Int J Sens Netw Data Commun

Abstract :

Cooperative relay communication systems is perhaps the most significant physical layer architectural upgrade that can assist the wireless network to achieve lower energy consumption with increased data rate. Among the different relaying strategies available, amplify and forward (AF) scheme is preferred due to the reduced delay and processing burden on relays. However, compound fading channel effects and cascaded noise effects due to multiple relaying channels are serious issues to be addressed for efficient deployment of AF systems. Since instantaneous signal strength measurement at relay for deciding required power boosting is infeasible in AF relaying, exact statistical characterization of the constituent channels is critical for an energy efficient system design as the receive signal quality depends on the channel fluctuations. Cost effective solutions to the deployment challenges/link design of a complete AaF system by exploiting the analytical results of compound channel statistics using some properties of Mellin transform is explored in this topic. The transform approach for the derivation of statistical measures like moments, average SNR and SNR variability are expected to be highly useful in various system design aspects like terrain dependent hop count determination, relay amplification factor design, proximity distance computation and so forth. Moreover, the proposed link-design method using appropriate noise margin and fade margin is suitable to adequately compensate the cascaded channel and noise effects resulting in reduced fading effects.

Biography :

Email: petercibil@gmail.com