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US 8,009,774 B2Granted
Devices for carrier recovery and related methods
AssigneePrinceton Technology Corporation
InventorChih-Yuan Teng
Life of this patent
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Abstract
Devices for carrier recovery and related methods are provided. A receiving signal is provided to perform an interpolation filtering process and a frequency multiplication sampling process. The receiving signal is then processed with a dealing signal. The dealing signal is generated by shifting a PN code with a frequency offset.
Claims18
A carrier recovery method, comprising:
- performing an interpolation filtering process to a receiving signal to output an interpolation filtering signal;
- performing a frequency multiplication sampling process according to the interpolation filtering signal to output a frequency multiplication sampling signal;
- and
- performing a correlation operation to the frequency multiplication sampling signal with a dealing signal to output a correlation signal,
- wherein the dealing signal is generated by shifting a PN (Pseudo Noise) code with a frequency offset, the interpolation filtering process is performed by a filter, the frequency multiplication sampling process is performed by a sampler, and the correlation operation is performed by a correlation device.
2 more elements
A device for carrier recovery for use in a receiving end of a DMB-T (Digital Multimedia Broadcast-Terrestrial) system, comprising:
- a filter, receiving a receiving signal, performing an interpolation filtering process to the receiving signal, and outputting an interpolation filtering signal;
- a correcting device coupled to the filter, correcting the interpolation filtering signal and outputting a correcting signal;
- a sampler coupled to the correcting device, performing a frequency multiplication sampling process to the correcting signal and outputting a frequency multiplication sampling signal;
- and
- a correlation device coupled to the sampler, processing the frequency multiplication sampling signal and a dealing signal with a correlation operation and outputting a correlation signal,
- wherein the dealing signal is generated by shifting a PN (Pseudo Noise) code with a frequency offset.
3 more elements
Dependencies are inferred from the claim text.