Method and apparatus for electronic item identification in a communication system using known source parameters
First Claim
Patent Images
1. A communications method comprising the steps of:
- receiving signals from at least one signal source during a first signal source transmission;
estimating at least one signal source parameter based on said received signals during said first signal source transmission;
receiving signals from at least one signal source during a second signal source transmission; and
determining a difference between said first and second signal source transmissions using said at least one estimated signal source and comprises suppressing at least one expected signal as a function of said at least one estimated signal source parameter.
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Abstract
A communications method including the steps of: receiving signals from at least one signal source during a first signal source transmission; estimating at least one signal source parameter based on the received signals during the first signal source transmission; receiving signals from at least one signal source during a second signal source transmission; and determining a difference between the first and second signal source transmissions using the at least one estimated signal source parameter.
101 Citations
31 Claims
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1. A communications method comprising the steps of:
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receiving signals from at least one signal source during a first signal source transmission;
estimating at least one signal source parameter based on said received signals during said first signal source transmission;
receiving signals from at least one signal source during a second signal source transmission; and
determining a difference between said first and second signal source transmissions using said at least one estimated signal source and comprises suppressing at least one expected signal as a function of said at least one estimated signal source parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electronic item identification communications system comprising:
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at least one source device having a signal source; and
at least one destination device adapted for receiving signals from at least one signal source during a first signal source transmission, estimating at least one signal source parameter based on said received signals during said first signal source transmission, receiving signals from at least one signal source during a second signal source transmission, and determining a difference between said first and second signal source transmissions using said at least one estimated signal source parameter wherein said at least one source device transmits in accordance with a multiple pass transmission algorithm. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A communications method comprising the steps of:
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receiving signals from at least one signal source during a first signal source transmission;
estimating at least one signal source parameter based on said received signals during said first signal source transmission;
receiving signals from at least one signal source during a second signal source transmission; and
determining a difference between said first and second signal source transmissions using said at least one estimated signal source parameter and comprises determining that a signal source transmitting during said first signal source transmission is no longer transmitting during said second signal source transmission. - View Dependent Claims (26)
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27. A communications method comprising the steps of:
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receiving signals from at least one signal source during a first signal source transmission;
estimating at least one signal source parameter based on said received signals during said first signal source transmission;
receiving signals from at least one signal source during a second signal source transmission; and
determining a difference between said first and second signal source transmissions using said at least one estimated signal source parameter and comprises determining whether at least one new signal source is transmitting during said second signal source transmission. - View Dependent Claims (28)
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29. An electronic item identification communications system comprising:
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at least one source device having a signal source; and
at least one destination device adapted for receiving signals from at least one signal source during a first signal source transmission, estimating at least one signal source parameter based on said received signals during said first signal source transmission, receiving signals from at least one signal source during a second signal source transmission, and determining a difference between said first and second signal source transmissions using said at least one estimated signal source parameter wherein said destination device is further adapted for performing a collision mitigation algorithm using said at least one estimated signal source parameter to determine the difference between said first said second signal source transmissions. - View Dependent Claims (30, 31)
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Specification