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US 8,265,217 B2Granted
Phase tracking in communications systems
AssigneeBroadcom Corporation
InventorsTommy Yu, Amy Gayle Hundhausen
Life of this patent
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Abstract
The present invention includes a method of determining a phase estimate for an input signal having pilot symbols. The method includes receiving a plurality of pilot symbols, and then multiplying two or more pilot symbol slots by corresponding correlator coefficients to correct a phase estimate of the input signal.
Claims6
A method of aligning a phase of data symbols positioned between at least two pilot symbol slots in a received data stream, one of the slots being currently received and other slot being previously received, the method comprising:
- generating an enable signal when at least one of the pilot symbol slots is sensed;
- estimating via a phase estimator a phase of a first pilot symbol in the currently received slot to produce a current phase estimate value based upon the enable signal;
- comparing the current phase estimate value with a phase estimate value from a second pilot symbol of the previously received slot to produce a difference phase estimate value;
- and
- correcting a phase of the data symbols based upon the difference phase estimate value.
2 more elements
Dependencies are inferred from the claim text.