Pulse or digital communications – Repeaters – Testing
Patent
1982-05-19
1985-06-25
Cangialosi, Sal
Pulse or digital communications
Repeaters
Testing
455 26, 179 15S, 179 15R, H04K 104
Patent
active
045258449
ABSTRACT:
A method for interchanging the frequency positions of n partial bands, each having a bandwidth b, of a signal frequency band, by the steps of: sampling signals in the frequency band at an input sampling rate; separating the sampled signals associated with each partial band into separate channels in stages in each of which sample signals are separated into high frequency and low frequency groups and the sampling rate is reduced; altering the positions of the channels in a scrambling matrix controlled by a random sequence generator; and spectrally recombining the signals in the separate channels into a signal extending across the signal frequency band.
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Cangialosi Sal
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