In this paper, we propose an optimized spectrum sharing scheme based on the Hungarian
Algorithm to guarantee the quality of service (QoS) for individual cognitive radio (CR) users …

Cognitive radio is a promising technology that aims to enhance the utilization of the radio
spectrum. This is achieved by providing opportunistic access to the unlicensed users or the …

The cognitive radio network (CRN) is a promising solution to the problem of spectrum
scarcity. To achieve efficient spectrum utilization, cognitive radio requires a robust spectrum …

Cognitive radio is a promising technology that aims to provide a better utilization of the radio
spectrum by giving access opportunistically to the unlicensed users or the secondary users …

Cognitive radio nodes have been proposed as means to improve the spectrum utilization. It
reuses the spectrum of a primary service provider under the condition that the primary …

Cognitive radio nodes have been proposed as means to improve the spectrum utilization. It
reuses the spectrum of a primary service provider under the condition that the primary …

The rapid growing of wireless multimedia applications increases the needs of spectrum
resources, but today's spectrum resources have become more and more scarce and large …

Cognitive radio technology solves the spectrum under-utilization problem by enabling the
secondary users access the spectrum holes opportunistically. Therefore, how to efficiently …

Fair and efficient spectrum sharing is an important problem in cognitive radios. In view of the
clustering cognitive radio network with capacity-limited common channels, this letter …

In this paper, a joint optimization algorithm for cognitive radio (CR) network based on
centralized spectrum sharing is proposed. A more practical scenario where the primary …