2007 search results - page 26 / 402 » SPECTRUM |
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
—In this paper we propose an interference detection technique for detecting time varying jamming signals in spread spectrum communication systems. The technique is based on Discr...
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
Abstract—Spectral sensing for the presence of ATSC DTV signals in VHF/UHF TV bands under a very low SNR environment is one of the core technologies in IEEE 802.22 WRAN. There are...
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
— Cognitive radio has been recently proposed as a promising technology to improve the spectrum utilization efficiency by intelligently sensing and accessing some vacant bands of...
TWC
2008
13 years 8 months ago
2008
Expressions relating spectral efficiency, power, and Doppler spectrum, are derived for Rayleigh-faded wireless channels with Gaussian signal transmission. No side information on th...
WIOPT
2010
IEEE
13 years 6 months ago
2010
IEEE
—Cognitive radio networks provide the capability to share the wireless channel with licensed (primary) users in an opportunistic manner. Primary users have a license to operate i...