Study of pulse-code modulation.

This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library collection for reasons not now known.  It has been included in the digital archive for its historical value to NPS.  Not believed to be a CIVINS (Civilian Institutions) title.Pulse-code modulation (PCM) makes possible a transmission system in which the ultimate signal-to-noise ratio at the receiver is independent of the distance spanned, provided that noise peaks at the receiver remain below a sharply-defined threshold value of approximately half the signal strength. The advantages of such a system for long-distance communications are apparent. These advantages must be weighed, however, against the increased bandwidth required for transmission in any particular application.http://www.archive.org/details/studyofpulsecode00sangU.S. Navy (U.S.N.) author