In a communication system with multiple cooperative relays, selecting the best relay utilizes
the available spectrum more efficiently. However, selective relaying poses a different …

Best relay selection is a bandwidth efficient technique for multiple relay environments
without compromising the system performance. The problem of relay selection is more …

In underlay cognitive networks with regenerative relaying, secondary users operating with
primary user are adhering to stringent interference constraint which limits their transmission …

Cognitive networks in underlay settings operate simultaneously with the primary networks
satisfying stringent interference limits. This condition forces them to operate with low …

The impact of an imperfect channel estimation on the amplify-and-forward (AF) mode
cooperative communications systems is studied, with some important factors, including the …

This paper investigates decode-and-forward (DF) buffer-aided relay selection for underlay
cognitive relay networks (CRNs) in the presence of both primary transmitter and receiver …

Underlay cognitive networks operate simultaneously with primary networks satisfying
stringent interference constraints, which reduces their transmission power and coverage …

Underlay cognitive networks should follow strict interference thresholds to operate in parallel
with primary networks. This constraint limits their transmission power and eventually the …

In this paper, we investigate the performance of relay selection in an underlay cognitive
radio system in the presence of primary user (PU) interference. In particular, we consider a …

In this paper, we investigate a multiple relay selection scheme for two-way relaying cognitive
radio networks where primary users and secondary users operate on the same frequency …