DISTRIBUTING CLOCK ASSOCIATED WITH A WIRED DATA CONNECTION OVER WIRELESS INTERFACES USING FREQUENCY CORRECTION AT THE TRANSMITTER SIDE
First Claim
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1. A method for using a synthesized clock frequency to generate a modulated signal, comprising:
- extracting, by a transmitter, clock frequency f2 from a wired data connection feeding the transmitter with data clocked at the clock frequency f2;
estimating clock frequency error between the clock frequency f2 and a clock frequency f1 derived from a local clock of the transmitter;
adding the clock frequency error to the clock frequency f1, resulting in a synthesized clock frequency f2; and
using the synthesized clock frequency f2 to modulate a data stream into a modulated signal.
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Abstract
A clock extractor extracts clock frequency f2, from a wired data connection feeding the transmitter with data clocked at the clock frequency f2. A clock error estimator estimates clock frequency error between the clock frequency f2 and a clock frequency f1 derived from a local clock of the transmitter. Clock adder adds the clock frequency error to the clock frequency f1, resulting in a synthesized clock frequency f2. A modulator uses the synthesized clock frequency f2, to modulate a data stream into a modulated signal.
1 Citation
20 Claims
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1. A method for using a synthesized clock frequency to generate a modulated signal, comprising:
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extracting, by a transmitter, clock frequency f2 from a wired data connection feeding the transmitter with data clocked at the clock frequency f2; estimating clock frequency error between the clock frequency f2 and a clock frequency f1 derived from a local clock of the transmitter; adding the clock frequency error to the clock frequency f1, resulting in a synthesized clock frequency f2; and using the synthesized clock frequency f2 to modulate a data stream into a modulated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for using a synthesized clock frequency to generate a wireless signal, comprising:
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extracting, by a transmitter, clock frequency f2 from a wired data connection feeding the transmitter with data clocked at the clock frequency f2; estimating clock frequency error between the clock frequency f2 and a clock frequency f1 derived from a local clock of the transmitter; adding the clock frequency error to the clock frequency f1, resulting in a synthesized clock frequency f2; modulating a data stream into a modulated signal; and up-converting, using the synthesized clock frequency f2, the modulated signal into a wireless signal. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for using a synthesized clock frequency to generate a modulated signal an up-convert it to a wireless signal, comprising:
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extracting, by a transmitter, clock frequency f2 from a wired data connection feeding the transmitter with data clocked at the clock frequency f2; estimating clock frequency error between the clock frequency f2 and a clock frequency f1 derived from a local clock of the transmitter; adding the clock frequency error to the clock frequency f1, resulting in a synthesized clock frequency f2; using the synthesized clock frequency f2 to modulate a data stream into a modulated signal containing the synthesized clock frequency f2; and up-converting, using the synthesized clock frequency f2, the modulated signal into a wireless signal containing synthesized clock frequency f2. - View Dependent Claims (19, 20)
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Specification