Multiplex communications – Diagnostic testing – Of a repeater
Reexamination Certificate
2011-08-16
2011-08-16
Phan, Tri H (Department: 2471)
Multiplex communications
Diagnostic testing
Of a repeater
C370S249000, C370S352000, C375S346000
Reexamination Certificate
active
08000254
ABSTRACT:
Methods are described for identifying a dominant impairment on a communication channel impaired by an interference issue. The methods include systematic examination of total power loading, systematic examination of signal power reduction, statistical examination of communication channel noise power, and systematic examination of interleaver effectiveness. Each relates to automatically diagnosing and characterizing distortion-based interference issues by monitoring the performance of a communication channel during a testing procedure. These methods enable a technician or engineer to remotely diagnose distortion-based interference issues relatively quickly without having to use external test equipment and without having to deploy technicians to various locations within the cable plant. A system by which these methods can be implemented is also disclosed.
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Motorola, “White Paper: Expanding Bandwidth Using Advanced Spectrum Management”, pp. 1-12, Sep. 25, 2003.
Cooper Michael J.
Moore Charles S.
Moran III John L.
Thompson Robert J.
General Instruments Corporation
Phan Tri H
Wiener Stewart M.
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