System and method for transmitting ancillary data
First Claim
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1. A method for decoding ancillary information at a receiver in a high-speed communications network, the method comprising:
- receiving an EMI-reduced message signal transmitted with a spread-spectrum clocking (SSC) profile, the SSC profile having an SSC profile variation encoding an ancillary data symbol;
extracting the SSC profile variation at a demodulator;
receiving a pilot symbol;
correcting the extracted SSC profile variation according to the pilot symbol; and
decoding the ancillary data symbol from the extracted SSC profile variation at a decoder, including comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol, wherein decoding comprises comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol.
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Abstract
A method and system for encoding ancillary information at a transmitter in a high-speed communications network, the method comprising: generating an electromagnetic interference (EMI) reduction signal; receiving an ancillary data symbol; generating an EMI reduction signal variation based on the ancillary data symbol; and varying a characteristic of the EMI reduction signal based on the generated EMI reduction signal variation to encode the ancillary data symbol in the varied EMI reduction signal.
9 Citations
8 Claims
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1. A method for decoding ancillary information at a receiver in a high-speed communications network, the method comprising:
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receiving an EMI-reduced message signal transmitted with a spread-spectrum clocking (SSC) profile, the SSC profile having an SSC profile variation encoding an ancillary data symbol; extracting the SSC profile variation at a demodulator; receiving a pilot symbol; correcting the extracted SSC profile variation according to the pilot symbol; and decoding the ancillary data symbol from the extracted SSC profile variation at a decoder, including comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol, wherein decoding comprises comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol. - View Dependent Claims (2, 3, 4, 5)
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6. A method for decoding ancillary information at a receiver in a high-speed communications network, the method comprising:
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receiving an EMI-reduced message signal transmitted with a spread-spectrum clocking (SSC) profile, the SSC profile having an SSC profile variation encoding an ancillary data symbol; extracting the SSC profile variation at a demodulator; decoding the ancillary data symbol from the extracted SSC profile variation at a decoder, including comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol, wherein decoding comprises comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol; selecting an EMI reduction signal variation bin corresponding to the extracted EMI reduction signal variation, the EMI reduction signal bin being a nominal value mapped to a range of EMI reduction signal variation values; and decoding, at a decoder, the ancillary data symbol from the selected EMI reduction signal variation bin. - View Dependent Claims (7)
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8. A receiver for decoding ancillary information in a high-speed communications network, the receiver comprising:
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an input configured to receive an EMI-reduced message signal transmitted with a spread-spectrum clocking (SSC) profile, the SSC profile having an SSC profile variation encoding an ancillary data symbol; a demodulator configured to extract the SSC profile variation, receive a pilot symbol, and correct the extracted SSC profile variation according to the pilot symbol; and a decoder for decoding the ancillary data symbol from the SSC profile variation, including comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol, wherein decoding comprises comparing a peak-to-peak amplitude of the SSC profile variation to an expected peak-to-peak amplitude corresponding to the ancillary data symbol.
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Specification