Publisher Summary This chapter discusses the motivation and the important role of network
support in cognitive radios. It introduces the radio environment map (REM) and explains …

This paper presents a novel and general approach to cognitive radio (CR) networking based
on the Radio Environment Map (REM). REM is envisioned to be an integrated database that …

In recent years, cognitive radio (CR) has been introduced as a new paradigm for enabling
much higher spectrum utilization by dynamically accessing and sharing the spectrum with …

Mobile Ad-Hoc Networks (MANETS) are multi hop wireless networks, where a packet hops
through a number of intermediate nodes within coverage range of each other to reach the …

In recent years, cognitive radios and cognitive wireless networks have been introduced as a
new paradigm for enabling much higher spectrum utilization, providing more reliable and …

Current satellite communication remains very expensive and impractical for most small to
mid-sized vessels, and at the same time marine wireless networking is lack of network …

Traditional marine monitoring systems such as oceanographic and hydrographic re-search
vessels use either wireless sensor networks with a limited coverage, or expensive satellite …

In DTNs (Delay/Disruption-Tolerant Networks) composed of mobile nodes, when the node
movement has spatial locality, the nodes repeatedly miss opportunities to forward messages …

Although there have been many analyses of the effects of node mobility on communication
performance of DTNs (Delay/Disruption-Tolerant Networks), to the best of our knowledge …