DISTINCT COMPLEX SIGNALS FORMED BY PLURAL CLIPPING TRANSFORMATIONS OF SUPERPOSED ISOCHRONAL PULSE CODE SEQUENCES

摘要

Signal sources overlay coded pulse signals on a tapped transmission cable, forming thereby composite signals of unique form. Source signals are representations of distinct words of an orthogonal, biorthogonal or transorthogonal code. Each source selectively transmits its assigned code signal or no signal in each of a series of isochronous time intervals. The source signals are adjusted in phase and amplitude to equalize delay and attenuation effects in relation to receiving terminals. Composite signals are handled further in a clipped digital form in which the intelligence of the composite is singularly retained. At receiving terminals the clipped composite is analyzed by digital matched filter circuits.