332 search results - page 61 / 67 » Opportunistic Spectrum Access in Cognitive Radio Networks |
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WD
2010
14 years 4 months ago
2010
Researches about multi-radio mesh networks have mostly focused on channel allocation under internal interference. However, the deployment of WMNs in unlicensed bands of dense urban...
GLOBECOM
2010
IEEE
14 years 7 months ago
2010
IEEE
Cognitive radios, which enable the coexistence on the same bandwidth of licensed primary and unlicensed secondary users, have the potential for dramatically increasing the efficien...
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, ...
IEPOL
2010
14 years 8 months ago
2010
Wired and wireless access networks continue to evolve toward higher-capacity, multi-service systems. Recent wireless broadband networks such as 3G LTE and WiMax provide a general-...
ICC
2009
IEEE
15 years 4 months ago
2009
IEEE
Abstract— Relaying and orthogonal frequency division multiple access (OFDMA) are the accepted technologies for emerging wireless communications standards. The activities in many ...