The rapid progression in wireless networking has raised the demand of extra spectrum
bands. The current fixed spectrum allocation policy used by the government agencies is …

A green-energy-powered cognitive radio (CR) network is capable of liberating the wireless
access networks from spectral and energy constraints. The limitation of the spectrum is …

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 …

When the number of users in the radio environment is increasing and the rapid development
in the wireless environment is examined, the efficient use of the spectrum decreases …

Generation and allocation of Target Channel Sequence (TCS) in relation to spectrum
handoff introduces several challenges in a multi-user Cognitive Radio Network. The primary …

Cognitive Radio Networks (CRNs) is the key technology to overcome the disadvantages of
static spectrum allocation and enhance spectrum utilization through Dynamic Spectrum …

Multimedia applications have been becoming a majority type of traffic over cognitive radio
network (CRN). Considering the different delay requirements of heterogeneous multimedia …

Abstract Quality of Service (QoS) aware spectrum handoff operation is critical for Secondary
Users (SUs) executing real-time applications like Voice over IP (VoIP) in Cognitive Radio …

Cognitive radio (CR) is a promising solution to improve the spectrum utilization by enabling
unlicensed users to exploit the spectrum in an opportunistic manner. Spectrum handoff is a …

The spectrum allocation is an attractive issue for mobile cognitive radio (CR) network.
However, the time-varying characteristic of the spectrum allocation is not fully investigated …