Pulse or digital communications – Repeaters – Testing
Patent
1996-05-16
1999-08-10
Tse, Young T.
Pulse or digital communications
Repeaters
Testing
375208, 36472501, H04B 169, H04L 2730
Patent
active
059369981
ABSTRACT:
A system and method is disclosed for producing a band-limited modulated information signal. A modulating signal generator is disclosed which provides a band-limited modulating signal having a predetermined bandwidth and cutoff characteristic. A modulator system and method is disclosed for producing a band-limited modulated information signal by combining an information signal with the band-limited modulating signal. A modulating signal generator and method is disclosed which generates a band-limited modulating signal as a series of modulating signal values at periodic intervals. A further modulating signal generator is disclosed which provides a band-limited modulating signal by generating frequencies and combining them at appropriate amplitudes and phases to synthesize a band-limited modulating signal. A further modulating signal generator is disclosed for generating a band-limited modulating signal by generating a time domain signal having a predetermined frequency spectrum and sequentially outputting a digital representation of that time domain signal.
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patent: 5459758 (1995-10-01), Moore, III
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