Towards Cognitive Radio for emergency networks


Zhang, Qiwei and Hoeksema, F.W. and Kokkeler, A.B.J. and Smit, G.J.M. (2006) Towards Cognitive Radio for emergency networks. In: Mobile Multimedia: Communication Engineering Perspective. Nova Publishers, U.S.A. ISBN 9781600212079

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Abstract:Large parts of the assigned spectrum is underutilized while the increasing number
of wireless multimedia applications leads to spectrum scarcity. Cognitive Radio
is an option to utilize non-used parts of the spectrum that actually are assigned to primary
services. The benefits of Cognitive Radio are clear when used in emergency
situations. Current emergency services rely much on the public networks. This is not
reliable in emergency situations, where the public networks can get overloaded. The
major limitation of emergency networks is spectrum scarcity, since multimedia data
in the emergency network needs a lot of radio resources. The idea of applying Cognitive
Radio to the emergency network is to alleviate this spectrum shortage problem
by dynamically accessing free spectrum resources. Cognitive Radio is able to work
in different frequency bands and various wireless channels and supports multimedia
services such as voice, data and video. A reconfigurable radio architecture is proposed
to enable the evolution from the traditional software defined radio to Cognitive Radio.
Item Type:Book Section
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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