221 search results - page 31 / 45 » Dynamic spectrum access in open spectrum wireless networks |
PEWASUN
2004
ACM
15 years 3 months ago
2004
ACM
In this paper, we introduce a modified version of the IEEE 802.11a protocol and evaluate its performance. The new protocol is a combination of the standard Medium Access Control (...
102
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AICT
2006
IEEE
14 years 11 months ago
2006
IEEE
Fourth Generation (4G) is the next generation of wireless networks that will replace third Generation (3G) networks sometimes in future. 4G is intended to provide high speed, high...
112
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MOBICOM
2009
ACM
15 years 4 months ago
2009
ACM
Cognitive radio is an enabling technology that allows unlicensed users to opportunistically access the spectrum in order to enhance the spectrum efficiency. In this paper, we cons...
75
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GLOBECOM
2008
IEEE
15 years 4 months ago
2008
IEEE
— The aggregate capacity of wireless ad-hoc networks can be substantially increased if each wireless node is equipped with multiple network interface cards (NICs) and each NIC op...
GLOBECOM
2009
IEEE
15 years 4 months ago
2009
IEEE
—The provision of very high data rates in a ubiquitous and fair manner throughout the service area is a great challenge for 4G and beyond-4G wireless networks. Towards that end, ...