NASA NTRS · 19700000343
Digital phase-modulation/multiplex system
Abstract
System combines and modulates subcarriers and pulse code modulation data entirely with digital logic, and phase modulates an RF carrier with a digital representation of the composite subcarrier signal. It permits programmed control and modification of the modulation indices.
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Couvillon, L. A.. 1970-09-01. Digital phase-modulation/multiplex system. https://ntrs.nasa.gov/citations/19700000343
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