Improved frequency offset estimator

Details Improved frequency offset estimator Improved frequency offset estimator

H - Electricity

04

B

H04B 1/711 (2011.01) H04L 27/00 (2006.01)

Patent

CA 2681724

Determining a frequency offset of a received signal utilizing two or more multipath components of the received signal is provided herein. By way of example, the received signal can be correlated with a synchronization sequence in a time domain or a frequency domain, resulting in separation of the two or more multipath components of the received signal. Analysis of at least one of the multipath components can provide a frequency offset of the received signal. Furthermore, by analyzing the multipath components, estimation of the frequency offset can be improved as compared with single-signal analysis techniques.

L'invention permet la détermination du décalage de fréquence d'un signal reçu à l'aide de deux de ses composantes de propagation par trajets multiples ou plus. A titre d'exemple, le signal reçu peut être corrélé à une séquence de synchronisation dans un domaine temporel ou un domaine fréquentiel, ce qui aboutit à la séparation des composantes de propagation par trajets multiples en question. Le décalage de fréquence du signal reçu est obtenu par l'analyse d'une ou plusieurs de ces composantes de propagation par trajets multiples. L'analyse desdites composantes peut également donner une meilleure estimation du décalage de fréquence que les techniques d'analyse sur un seul signal.

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