Timing reproducing device and demodulator

Details Timing reproducing device and demodulator Timing reproducing device and demodulator

H - Electricity

04

L

H04L 27/22 (2006.01) H04L 7/04 (2006.01)

Patent

CA 2361422

In-phase and orthogonal components of a base band signal having a preamble symbol are squared to obtain squared in-phase orthogonal components. Amount of correlation is obtained between the squared in-phase component and a 1/2 symbol frequency component output from a VCO or an oscillator, and amount of correlation is obtained between the squared orthogonal component and the 1/2 symbol frequency component. Finally, a phase control signal for carrying out a phase control is generated by using the obtained amount of correlations.

On détermine des valeurs de corrélation entre une composante en phase au carré obtenue par la mise au carré d'une composante en phase d'un signal de bande de base comportant un signal de préambule, une composante orthogonale au carré obtenue par la mise au carré d'une composante orthogonale et une sortie de composante de fréquence de symbole 1/2 provenant d'un OAT et d'un oscillateur. A l'aide de ces valeurs de corrélation déterminées, on génère un signal de commande de phase qui permet de commander la phase au moyen desdites valeurs de corrélation.

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