2007 search results - page 238 / 402 » SPECTRUM |
202
click to vote
JSAC
2008
15 years 5 months ago
2008
We propose the cross-layer based opportunistic multi-channel medium access control (MAC) protocols, which integrate the spectrum sensing at physical (PHY) layer with the packet sch...
130
click to vote
ENTCS
2007
15 years 5 months ago
2007
d abstract) David de Frutos Escrig1 ,3 Departamento de Sistemas Inform´aticos y Computaci´on Universidad Complutense de Madrid Madrid, Spain Carlos Gregorio Rodr´ıguez2 ,4 Depa...
158
click to vote
IJNSEC
2007
15 years 5 months ago
2007
In this paper, we propose a discrete cosine transform (DCT) based spread spectrum data-hiding algorithm that is resilient to statistical attacks. Unlike other spread spectrum base...
149
click to vote
JIB
2007
15 years 5 months ago
2007
2D-Nuclear magnetic resonance (NMR) spectra are used in the (structural) analysis of small molecules. In contrast to 1D-NMR spectra, 2D-NMR spectra correlate the chemical shifts o...
166
click to vote
TSP
2008
15 years 5 months ago
2008
This paper introduces a general and axiomatic approach to linear signal processing (SP) that we refer to as the algebraic signal processing theory (ASP). Basic to ASP is the linear...