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In this study, a cognitive radio network is considered in which multiple secondary users intend to detect a primary user frequency band in order to specify whether it is occupied or not. To this end, a blind Bayesian framework is proposed by which ...

In this study, an integrated scheme is proposed to stream real‐time scalable videos from a base station to multiple secondary users over cognitive radio networks. The objective of the proposed scheme is to maintain continuous video playback with ...

This study addresses the joint pricing and service selection problem between two primary operators (POs) and multiple secondary users (SUs). The SUs are divided into two priority classes in terms of their delay‐sensitive demands. A M/G/1 queueing model of ...

A cooperative cognitive radio (CR) network with multiple secondary users (or CRs) is considered. Each CR consists of an arbitrary M number of antennas. For spectrum sensing, at each CR, an improved energy detector with selection combining mechanism is ...

This study analyses a comprehensive performance of multiuser spectrum sharing networks using random beamforming (RBF). In the considered cognitive radio (CR) system, a secondary broadcast station (SBS) coexisting with a pair of primary transceivers ...

In this paper, we consider a cognitive radio network with multiple secondary users (SUs). The SU packets in the system can be divided into two categories: SU1 packets and SU2 packets, where SU1 packets have transmission priority over SU2 packets. ...

Cooperative spectrum sensing, proposed to improve the performance of spectrum sensing in cognitive radio systems where there are multiple secondary users who can cooperatively detect the presence of one primary user, is receiving significant attention. ...

In this study, the authors consider a cooperative spectrum sharing network with multiple primary users (PUs) and multiple secondary users (SUs). Hereby, one end‐PU communicates bidirectionally with one of the best selected other end‐PUs with the ...

An interference alignment (IA) scheme is presented that allows multiple secondary users to share the same frequency band of multiple pre-existing primary links without generating any interference. Firstly, primary users employ the iterative algorithm ...

We consider the problem of efficient opportunistic spectrum access in cognitive radio networks where there are multiple secondary users trying to share access to multiple channels. In our formulation, each user has a potentially different valuation of ...