Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2007-08-21
2007-08-21
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S346000, C375S351000, C375S254000, C329S318000, C329S319000, C329S320000, C329S349000, C702S017000, C702S191000, C702S195000, C455S501000, C455S063100, C455S570000, C455S114200, C381S317000, C381S071100, C381S073100, C381S094100
Reexamination Certificate
active
10216333
ABSTRACT:
A noise blanker (40, 106) monitors and removes noise from a sampled signal by adaptive filtering (98, 150) the sampled signal to generate trained adaptive filter prediction coefficients. The sampled signal is provided as an output signal when the noise blanker is in a training mode. A noise monitor (34, 154) detects whether noise contained within the sampled signal exceeds a predetermined threshold and provides a control signal in response to the detecting. The noise blanker is placed in a prediction mode for a predetermined amount of time in response to asserting the control signal. A prediction output signal is generated using a plurality of prediction coefficients as an all-pole filter. The prediction output signal has minimal noise content.
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Li Junsong
Raj Raghu G.
Wang Ronald
Freescale Semiconductor Inc.
Ghayour Mohammed
Hill Daniel D.
King Robert L.
Malek Leila
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