H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 25/02 (2006.01) H04L 27/26 (2006.01)
Patent
CA 2460504
The invention provides a multicarrier system constructed on a time-frequency lattice comprising frames having MxN symbols distributed over M subcarriers each of which is divided into N specific symbol times, each frame comprising P pilot symbols (21) distributed time-wise and frequency-wise so as to cover the frame in a meshed structure so that, in particular, some at least of the M subcarriers contain no pilot symbols and/or no pilot symbol should be transmitted to some at least of the N symbol times. The invention also concerns a method for tracking a transmission channel using such a signal and a device for implementing said method.
L'invention propose un système multiporteuses construit sur un réseau temps- fréquence comprenant des trames ayant MxN symboles répartis Sur M sous- porteuses dont chacune est divisée en N temps symboles déterminés, chaque trame comprenant P symboles pilotes (21) répartis en temps et en fréquence de manière a couvrir la trame selon une structure maillée de telle sorte, en particulier, que certaines au mains des M sous-porteuses ne contiennent aucun symbole pilote et/ou qu'aucun symbole pilote ne soit transmis a certains au moins des N temps symboles, ainsi qu'un procédé de poursuite d'une canal de transmission a l'aide d'un tel signal et un dispositif pour la mise en oeuvre du procédé.
Brutel Christophe
Mege Philippe
Eads Secure Networks
Eads Telecom
Fetherstonhaugh & Co.
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