This paper provides an analytic performance evaluation of the bit error rate (BER) of
underlay decode-and-forward cognitive networks with best relay selection over Rayleigh …

Proactive relay selection in cognitive radio networks has recently received considerable
attention. However, its outage probability analysis is limited to partially-identical fading …

In this letter, outage performance of cognitive cooperative radio networks using two decode-
and-forward (DF) schemes is investigated. Subject to the joint outage constraint of the …

This paper investigates the outage performance of a cognitive relay network considering
best relay selection in Nakagami-m fading environment. The secondary user is allowed to …

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

In this correspondence, an adaptive cooperation diversity scheme with best-relay selection
is proposed for multiple-relay cognitive radio networks to improve the performance of …

In this paper, we analyze the performance of a cognitive amplify-and-forward multi-relay
network (CAFMRN) with direct link under the joint impact of transceiver hardware …

With the wide‐spread wireless applications and services, the spectrum scarcity has become
a challenging problem. Thus, it is necessary to find a solution to have more spectrum bands …

In this paper, we investigate two partial relay selection (PRS) protocols in underlay cognitive
radio under impact of hardware impairment. In particular, the re-active and pro-active PRS …

In a cognitive relay system, the secondary user is permitted to transmit data via a relay when
licensed frequency bands are detected to be free. Previous studies mainly focus on reducing …