Agile distortion and noise cancellation across multiple...

Details Agile distortion and noise cancellation across multiple... Agile distortion and noise cancellation across multiple...

H - Electricity

04

N

H04N 5/40 (2006.01) H04L 27/34 (2006.01)

Patent

CA 2729395

A distortion-cancellation method for analog CATV or QAM transmission over cable is provided wherein a single feedback path from the output of a multiple-channel multiple-port upconverter/modulator is down-converted and used to reduce or cancel undesirable noise components including LO leakage, spurious, and modulated noise. The method allows for real-time monitoring, tuning, or control of the CATV/QAM output and of interfering signals and aging effects as compared to a desired performance metric.

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