Bi-phase communication demodulation techniques
First Claim
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1. A bi-phase communication receiver system comprising:
- a channel selection controller configured to compare a first bi-phase modulation channel having a first amplitude and a second bi-phase modulation channel having a second amplitude different from the first amplitude, the first and second bi-phase modulation channels associated with a bi-phase modulation signal, the channel selection controller configured to select one of the first and second bi-phase modulation channels for processing and to discard the other of the first and second bi-phase modulation channels based only on a relative amplitude of the first and second bi-phase modulation channels;
a preamble detector configured to detect a preamble of the selected bi-phase modulation channel and generate a synchronization signal based on the detected preamble; and
a bi-phase signal decoder coupled to the channel selection controller and the preamble detector, the bi-phase signal decoder configured to decode the selected bi-phase modulation channel aligned by the synchronization signal.
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Abstract
One aspect of the present invention includes a bi-phase communication receiver system. The system includes an analog-to-digital converter (ADC) configured to sample a bi-phase modulation signal to generate digital samples of the bi-phase modulation signal. The system also includes a bi-phase signal decoder configured to decode the bi-phase modulation signal based on the digital samples. The system further includes a preamble detector comprising a digital filter configured to evaluate the digital samples to generate an output and to detect a preamble of the bi-phase modulation signal for decoding the bi-phase modulation signal based on the output.
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Citations
8 Claims
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1. A bi-phase communication receiver system comprising:
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a channel selection controller configured to compare a first bi-phase modulation channel having a first amplitude and a second bi-phase modulation channel having a second amplitude different from the first amplitude, the first and second bi-phase modulation channels associated with a bi-phase modulation signal, the channel selection controller configured to select one of the first and second bi-phase modulation channels for processing and to discard the other of the first and second bi-phase modulation channels based only on a relative amplitude of the first and second bi-phase modulation channels; a preamble detector configured to detect a preamble of the selected bi-phase modulation channel and generate a synchronization signal based on the detected preamble; and a bi-phase signal decoder coupled to the channel selection controller and the preamble detector, the bi-phase signal decoder configured to decode the selected bi-phase modulation channel aligned by the synchronization signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification