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The paper targets a future world where all wireless networks are self-organising entities and in which the predominant mode of spectrum access is dynamic. The paper explores whether the behaviour of a collection of autonomous self-organising wireless systems can be treated as a complex system and whether complex systems science can shed light on the design and deployment of these networks. The authors...
In this paper we explore a means of allowing independent service providers using whatever spectrum they can find, to come together in a loose form of coalition which supports mobility between service providers. The service providers are not required to use similar network configurations- i.e. they can configure to best suit their needs and in line with what spectrum they find available. Our solution...
In dynamic spectrum access (DSA) networks, users are allowed to access the available spectrum while keeping neighboring transmissions not interfered. In this demonstration, we show how the available bandwidth can be used efficiently while at the same time keeping the interference power level below a certain threshold. This is done through the use of the constellation expansion technique for orthogonal...
The purpose of this demonstration is to show handover with continuous service between two independent base-station entities belonging to different operators. The handover occurs without any link layer connection between the base-stations and without prior knowledge of base-station operating frequencies or channelization on the part of the receiver. To achieve this, the system employs a receiver-driven...
The Cognitive Radio research field has seen great enthusiasm and rapid growth in the number of active researchers, papers published, conference sessions and journal special issues. This paper presents the author's views on research topics and methodologies that will sustain momentum in the field over the next five years, particularly focusing on ways in which reasoning and learning may be effectively...
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