Time-critical and delay-sensitive multimedia applications require more spectrum and
transmission resources. With the provision of cognitive radios (CRs), the underutilized …

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 …

Due to the recent developments in the wireless mesh and ad-hoc networks, multi-hop
cognitive radio networks (MCRNs) have attained the significant attention towards providing …

Cooperative Cognitive Radio Networks: The Complete Spectrum Cycle provides a solid
understanding of the foundations of cognitive radio technology, from spectrum sensing …

The increasing popularity of wireless services and devices necessitates high bandwidth
requirements; however, spectrum resources are not only limited but also heavily …

Dynamic spectrum access (DSA) networks are composed of unprivileged users, called
secondary users (SUs), that utilize the spectrum opportunities produced by the absence of …

摘要随着无线频谱资源短缺问题的日益突出, 认知无线电网络得到了广泛关注和研究.
在这类网络中, 媒体接入控制MAC 协议是关键技术之一. 特别是在认知无线电自组织网络中 …

认知无线电技术被认为是解决目前频谱资源利用率低下问题最有前景的技术, 基于该技术,
认知无线电网络采用动态频谱接入方式有效地提高了授权频段的利用率. 然而 …

Cognitive radio (CR) has emerged as a promising technology to solve problems related to
spectrum scarcity and provides a ubiquitous wireless access environment. CR-enabled …

In this paper, we exploit the heterogeneity of wireless channels and propose an efficient
opportunistic cognitive routing (OCR) scheme for dynamic spectrum access (DSA) networks …