Clock multiplexing for baseband automatic frequency correction
First Claim
1. A method comprising:
- generating a first clock reference;
operating a global positioning system (GPS) module in response to the first clock reference;
in response to an automatic frequency correction signal, generating a second clock reference by performing automatic frequency correction on the first clock reference;
in response to the automatic frequency correction signal, generating a third clock reference by performing automatic frequency correction on the first clock reference;
receiving radio frequency signals from a wireless medium;
in response to the third clock reference, generating baseband signals based on the received radio frequency signals;
selecting one of the first clock reference and the second clock reference; and
in response to the selected one of the first clock reference and the second clock reference, generating the automatic frequency correction signal based on the baseband signals.
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Accused Products
Abstract
A wireless communications system includes a clock module, a communications module, a receiver module, and a baseband module. The clock module is configured to generate a first clock reference. The communications module is configured to operate in response to the first clock reference and independent of a corrected clock reference. The corrected clock reference is generated by performing automatic frequency correction on the first clock reference according to an automatic frequency correction signal. The receiver module is configured to (i) receive radio frequency signals from a wireless medium, and (ii) in response to the corrected clock reference, generate baseband signals based on the received radio frequency signals. The baseband module is configured to (i) receive the baseband signals, and (ii) in response to a selected one of the first clock reference and the corrected clock reference, generate the automatic frequency correction signal based on the baseband signals.
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Citations
40 Claims
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1. A method comprising:
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generating a first clock reference; operating a global positioning system (GPS) module in response to the first clock reference; in response to an automatic frequency correction signal, generating a second clock reference by performing automatic frequency correction on the first clock reference; in response to the automatic frequency correction signal, generating a third clock reference by performing automatic frequency correction on the first clock reference; receiving radio frequency signals from a wireless medium; in response to the third clock reference, generating baseband signals based on the received radio frequency signals; selecting one of the first clock reference and the second clock reference; and in response to the selected one of the first clock reference and the second clock reference, generating the automatic frequency correction signal based on the baseband signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireless communications system comprising:
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a clock module configured to generate a first clock reference; a communications module configured to operate in response to the first clock reference and independent of a corrected clock reference, wherein the corrected clock reference is generated by performing automatic frequency correction on the first clock reference according to an automatic frequency correction signal; a receiver module configured to (i) receive radio frequency signals from a wireless medium, and (ii) in response to the corrected clock reference, generate baseband signals based on the received radio frequency signals; and a baseband module configured to (i) receive the baseband signals, and (ii) in response to a selected one of the first clock reference and the corrected clock reference, generate the automatic frequency correction signal based on the baseband signals. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of operating a wireless communications system, the method comprising:
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generating a first clock reference; operating a wireless communications module in response to the first clock reference and independent of a corrected clock reference, wherein the corrected clock reference is generated by performing automatic frequency correction on the first clock reference according to an automatic frequency correction signal; independent of the wireless communications module, receiving radio frequency signals from a wireless medium; in response to the corrected clock reference, generating baseband signals based on the received radio frequency signals; and in response to a selected one of the first clock reference and the corrected clock reference, generating the automatic frequency correction signal based on the baseband signals. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification