Method and apparatus for radio frequency (RF) pulse synchronization in super regenerative receiver (SRR)
First Claim
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1. A method for radio frequency (RF) pulse synchronization in a super regenerative receiver (SRR), the method comprising:
- receiving an input signal comprising an asymmetric preamble;
estimating a quench cycle Q that gives an average maximum energy capture during packet detection;
finding a preamble pulse chip with a maximum energy capture from the asymmetric preamble;
estimating a phase difference between the input signal and a quench signal based on the preamble pulse chip;
calculating the phase difference between the input signal and the quench signal; and
compensating for the phase difference by adjusting the phase of a locally generated signal to achieve RF pulse synchronization between the input signal and the quench signal,wherein the asymmetric preamble comprises a packet detection preamble and the preamble pulse chip.
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Abstract
A method for radio frequency (RF) pulse synchronization in a super regenerative receiver (SRR), includes receiving an input signal including an asymmetric preamble, and estimating a phase difference between the input signal and a quench signal based on the asymmetric preamble. The method further includes compensating for the phase difference.
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Citations
19 Claims
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1. A method for radio frequency (RF) pulse synchronization in a super regenerative receiver (SRR), the method comprising:
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receiving an input signal comprising an asymmetric preamble; estimating a quench cycle Q that gives an average maximum energy capture during packet detection; finding a preamble pulse chip with a maximum energy capture from the asymmetric preamble; estimating a phase difference between the input signal and a quench signal based on the preamble pulse chip; calculating the phase difference between the input signal and the quench signal; and compensating for the phase difference by adjusting the phase of a locally generated signal to achieve RF pulse synchronization between the input signal and the quench signal, wherein the asymmetric preamble comprises a packet detection preamble and the preamble pulse chip. - View Dependent Claims (2, 3, 4, 5, 7, 18, 19)
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6. An apparatus for radio frequency (RF) pulse synchronization in a super regenerative receiver (SRR), the apparatus comprising:
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a receiver configured to receive, by a processor, an input signal comprising an asymmetric preamble, an estimator configured to estimate, by the processor, a quench cycle Q that gives an average maximum energy capture during packet detection, a preamble pulse chip finder configured to estimate, by the processor, a phase difference between the input signal and a quench signal based on the preamble pulse chip, a calculator configured to calculate, by the processor, the phase difference between the input signal and the quench signal based on the preamble pulse chip, and compensator configured to compensate, by the processor, for the phase difference by adjusting the phase of a locally generated signal to achieve RF pulse synchronization between the input signal and the quench signal, wherein the asymmetric preamble comprises a packet detection preamble and the preamble pulse chip. - View Dependent Claims (8, 9, 10, 11)
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12. A receiver for radio frequency (RF) pulse synchronization, the receiver comprising:
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a receiver configured to receive, by a processor, an input signal comprising an asymmetric preamble, an estimator configured to estimate, by the processor, a quench cycle Q that gives a maximum energy capture during packet detection, a preamble_pulse chip finder configured to find, by the processor, a preamble_pulse chip with the maximum energy capture from the asymmetric preamble, a calculator configured to calculate, by the processor, a phase difference between the input signal and a quench signal based on the preamble_pulse chip, and a delayer configured to delay, by the processor, the quench signal to compensate for the phase difference by adjusting the phase of a locally generated signal to achieve RF pulse synchronization between the input signal and the quench signal, wherein the asymmetric preamble comprises a packet detection preamble and the preamble_pulse chip. - View Dependent Claims (13, 14)
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15. An apparatus comprising:
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a receiver configured to receive, at a processor, an input signal comprising an asymmetric preamble, an estimator configured to estimate, by the processor, a quench cycle Q that gives an average maximum energy capture during packet detection, a preamble_pulse chip finder configured to find, by the processor, a preamble_pulse chip with the maximum energy capture, an estimator configured to estimate, by the processor, a phase difference between the input signal comprising the asymmetric preamble and a quench signal generated by a quench oscillator based on the preamble_pulse chip, a calculator configured to calculate, by the processor, the phase difference between the input signal and the quench signal based on the preamble_pulse chip, and a synchronizer configured to synchronize, by the processor, the quench signal with the input signal based on the phase difference by adjusting the phase of a locally generated signal to achieve RF pulse synchronization between the input signal and the quench signal, wherein the asymmetric preamble comprises a packet detection preamble and the preamble_pulse chip. - View Dependent Claims (16, 17)
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Specification