Cognitive radio systems necessitate the incorporation of cooperative spectrum sensing
among cognitive users to increase the reliability of detection. We have found that …

In this paper, we present an analytical framework to evaluate the effects of multiple spectrum
handoffs on channel utilization and latency performances in cognitive radio (CR) networks …

In this paper, we propose a spectrum allocation framework that jointly considers the Quality-
of-Service (QoS) provisioning for heterogeneous secondary Real-Time (RT) and Non-Real …

Cognitive radio networks use dynamic spectrum access of secondary users (SUs) to deal
with the problem of radio spectrum scarcity. In this paper, we investigate the SU performance …

Communications systems make heavy use of FPGAs; their programmability allows system
designers to keep up with emerging protocols and their high-speed transceivers enable high …

This paper studies optimal channel reservation in cooperative cognitive radio networks
(CRNs) where secondary users (SUs) have access to the combined spectrum pool of …

In this paper, we propose a new spectrum handoff scheme with spectrum admission control
(SAC). In the proposed scheme, the secondary users (SUs) make up secondary user groups …

Cognitive radio technology would enable a set of secondary users (SU) to opportunistically
use the spectrum licensed to a primary user (PU). On the appearance of this PU on a …

In this paper, the performance of cognitive radio networks (CRNs) considering either
Poisson or ON/OFF models for the primary users' arrivals is evaluated and compared. These …

In cognitive radio networks, the arrival of Primary Users (PUs) may force Secondary Users
(SUs) to terminate their ongoing sessions or degrade their Quality of Service (QoS) level …