4 search results - page 1 / 1 » Backward Compatible Modulation Schemes for Improving Spectru... |
VTC
2006
IEEE
13 years 10 months ago
2006
IEEE
In this study, a new physical layer transmission technique is proposed with the spectrum efficiency up to two times of that of the Eureka-147 DAB system. The proposed technique com...
DSD
2011
IEEE
12 years 4 months ago
2011
IEEE
—With the opening up of white spaces, efficient use of the fragmented spectrum - TV white space in particular - has become an extremely important focus of research. Apart from ef...
TWC
2008
13 years 4 months ago
2008
Abstract-- Existing space-time codes have focused on multipleantenna systems with linear modulation schemes such as phaseshift keying and quadrature amplitude modulation. Continuou...
MONET
2008
13 years 4 months ago
2008
This paper presents the performance comparison of efficiency. OFDM is well known as a spectrally efficient Cognitive Radio TDCS and OFDM based for MIMO system modulation mode which...