Blind carrier offset detection for quadrature modulated...

Details Blind carrier offset detection for quadrature modulated... Blind carrier offset detection for quadrature modulated...

H - Electricity

04

L

H04L 27/233 (2006.01) H04L 27/38 (2006.01)

Patent

CA 2407722

A system and method for estimating the frequency offset experienced between carrier and local oscillator frequencies in communication systems using quadrature modulation. The invention exploits the geometry of the quadrature modulation constellation and estimates actual offset within a predefined carrier offset value without requiring data estimation.

L'invention concerne un système et un procédé permettant d'estimer le décalage de fréquence subi entre des fréquences de porteuse et d'oscillateur local dans des systèmes de communication qui utilisent une modulation en quadrature. L'invention utilise la géométrie de la constellation de modulation en quadrature et évalue le décalage réel au sein d'une valeur prédéfinie de décalage de porteuse sans besoin d'estimation de données.

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