Best Relay Selection Strategy in Cooperative Spectrum Sharing Framework with Mobile-Based End User

In this work, a cognitive relay network (CRN) with interference constraint from the primary user (PU) mobile end is studied. The proposed system model employs half-duplex transmission between single PU and secondary (SU). addition, an amplify forward (AF) relaying technique employed SU source destination. context, (SU destination) assumed to move at high vehicular speeds, whereas other nodes Source, relays PU) are be stationary. scheme dynamically determines best for based on highest signal-to-noise (SNR) ratio by deploying selection combiner destination, thereby achieving diversity. All channels connected stationary modelled using Rayleigh distribution, all links Nakagami-m fading distribution (m<1). outage probabilities (OPs) obtained considering several scenarios Monte Carlo simulation used verify numerical results. results show that variety of factors, including number relays, severity channels, position PU, model, speed, might influence CRN’s performance.