Early-late synchronizer having reduced timing jitter

A device for maintaining fine alignment between an incoming spread spectrum signal and a locally generated code in a digital communication receiver comprises: - a delay line for storing a plurality of consecutive samples of the incoming spread spectrum signal; - three digitally controlled interpolat...

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Bibliographische Detailangaben
1. Verfasser: ETTORRE DONATO,GRAZIANO MAURIZIO,MELIS BRUNO,FINOTELLO ANDREA,RUSCITTO ALFREDO
Format: Patent
Sprache:eng
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Zusammenfassung:A device for maintaining fine alignment between an incoming spread spectrum signal and a locally generated code in a digital communication receiver comprises: - a delay line for storing a plurality of consecutive samples of the incoming spread spectrum signal; - three digitally controlled interpolators for determining by interpolation between consecutive samples an interpolated early sample (e), an interpolated middle sample (m) and an interpolated late sample ; - two correlators for calculating an error signal (xi) as the difference between the energy of the symbols computed from the interpolated early (e) and late samples; - a circuit for generating a control signal (S OUT