Receiver circuit

Pulse or digital communications – Receivers – Particular pulse demodulator or detector

Reexamination Certificate

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Reexamination Certificate

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09617587

ABSTRACT:
A receiver circuit is for processing a received signal which includes at least a first portion and a second portion which repeats the content of the first portion after a repeat interval. For example, the receiver may be for DVB-T signals using COFDM. In order to ensure that the estimated symbol start position is accurate, the receiver calculates two correlation values, namely an early correlation and a late correlation. The early correlation is measured between samples ahead of an assumed first portion start position and ahead of an assumed second portion start position, and the late correlation is measured between samples behind an assumed first portion end position and behind an assumed second portion end position. When the assumed start and end positions are accurate, the early and late correlations are equal, and so the assumed start and end positions are controlled to equalize the early correlation and the late correlation.

REFERENCES:
patent: 5909436 (1999-06-01), Engstrom et al.
patent: 6084927 (2000-07-01), Pon
patent: 6178025 (2001-01-01), Hardcastle et al.
patent: 6459744 (2002-10-01), Helard et al.
patent: 6522866 (2003-02-01), Merkle et al.
patent: 6567482 (2003-05-01), Popovic′
patent: 6628730 (2003-09-01), Stott et al.
patent: 2002/0057729 (2002-05-01), Farbod et al.
patent: 0 689 313 (1995-05-01), None
patent: 0 798 903 (1997-03-01), None

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