Receiver component and method for enhancing a detection range of a time-tracking process in a receiver
AssigneeNXP B.V.
InventorsSebastian Eckert, Martin Kessel
Life of this patent
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Abstract
A receiver component and a method for enhancing a detection range of a time synchronization process in a receiver utilize multiple cross-correlations of a received signal with a known preamble sequence. The results of the multiple cross-correlations are divided into delay segments. The delay segments of one of the multiple cross-correlations are compared with the delay segments of another of the multiple cross-correlations to determine delay of the delay segments of the one of the multiple cross-correlation results.
Claims20
A method for enhancing a detection range of a time-tracking process in a receiver, the method comprising:
- performing multiple cross-correlations on different portions of a received signal with a known preamble sequence to derive multiple cross-correlation results;
- dividing each of the cross-correlation results into a plurality of delay segments;
- and
- comparing the delay segments of one of the multiple cross-correlation results with the delay segments of another of the multiple cross-correlation results to determine delay of the delay segments of the one of the multiple cross-correlation results.
A component of a receiver comprising:
- a plurality of cross-correlation modules configured to perform multiple cross-correlations on different portions of a received signal with a known preamble sequence to derive multiple cross-correlation results;
- a plurality of division modules coupled to the plurality of cross-correlation modules, the division modules being configured to divide each of the cross-correlation results into a plurality of delay segments;
- and
- an ambiguity resolution module configured to compare the delay segments of one of the multiple cross-correlation results with the delay segments of another of the multiple cross-correlation results to determine delay of the delay segments of the one of the multiple cross-correlation results.
A method for enhancing a detection range of a time-tracking process in a digital audio broadcasting based receiver, the method comprising:
- performing first and second cross-correlations on a received signal with a known preamble sequence to derive first and second cross-correlation results, wherein the second cross-correlation is time-shifted with respect to the first cross-correlation;
- dividing each of the first and second cross-correlation results into a plurality of delay segments;
- and
- comparing magnitude of the delay segments of the first cross-correlation results with magnitude of the delay segments of the second cross-correlation results to determine delay of the delay segments of the first cross-correlation results.
Dependencies are inferred from the claim text.