Opportunistic routing emerged as a novel technique to cope with the problem of highly unpredictable and lossy wireless channels in urban wireless mesh networks. However, existing opportunistic routing protocols only consider single-radio wireless nodes, and assume that all the nodes work on the same channel, without exploiting possible concurrent transmissions by multi-radio nodes over orthogon...

Wireless mesh networking is one of the most promising next generation network technologies. A wireless mesh network is a decentralized, self-organizing, self-configuring and self-healing multi-hop wireless network. In this thesis, we introduce the development, architectures, characteristics and applications of wireless mesh networks and present the existing channel assignments and routing proto...

In this article we review FCC secondary markets initiatives and how smart wireless devices could be used to increase spectral efficiency. We survey the current proposals for cognitive radio deployment, and present a new, potentially more spectrally efficient model for a wireless channel employing cognitive radios; the cognitive radio channel. This channel models the simplest scenario in which a...

Modern day wireless network applications exhibit varying service demands to satisfy user requirements, while differing in the nature of traffic they generate. Future wireless networks should, therefore, be capable of adapting to the heterogeneous traffic characteristics, by efficiently utilizing the expensive radio resources. In this dissertation, we concentrate on three important problems in e...

The scarce resources in wireless systems compounded with their highly variable and errorprone propagation characteristics stress the need for efficient resource management. Scheduling is a key tool to allocate efficiently the radio resource. While fading effects have long been combated in wireless networks, primarily devoted to voice calls, they are now seen as an opportunity to increase the ca...

Due to the limitation of radio spectrum resource and fast deployment of wireless devices, careful channel allocation is of great importance for mitigating the performance degradation caused by interference among different users in wireless networks. Most of existing work focused on fixedwidth channel allocation. However, latest researches have demonstrated that it is possible to combine contigu...