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Modulation Theory; Bell Laboratories Series. Harold S. Black.

Modulation Theory; Bell Laboratories Series.

D van Nostrand Co, NY & Toronto, 1953; 363 pages, Index, photographs, diagrams, Refs at chapter ends.
Condition: Good+ light blue tweadpatterned cloth hardcover, no dustjacket. Title blocked in black on spine, bright and clean. Binding is sound but shows wear at spine ends, old insect damage inside endpages along inner hinges, prev. owner's name and information blacked out on endpage; internal pages clean & unmarked with 3 small paragraphs pencil underlined.
Price: $20.00
Item no. C8815
Item Description
CONTENTS -- HISTORICAL BACKGROUND - Meaning of modulation; historical note; speed of signaling; Nyquist interval; Hartley's expression for information capacity; Contemporaneous developments; WHY MODULATE - to prepare the message for transmission; to translate signals from one medium to another; to prepare the received signals for their destination; to convey messages from one point in space-time to another;

KINDS OF MODULATION - amplitude modulation; usage of terms sinusoidal wave & sine wave; extension of meaning; angle modulation; PM & FM; pulse modulation; pulse-code; topics not treated; SAMPLING PRINCIPLE - special statement of; samples of nonzero duration; generalized treatment; additional theorems pertaining to periodic sampling of signals; Refs & Problems; QUANTIZATION, CODE TRANSMISSION & MULTIPLEXING;

EFFICIENT SYSTEMS OF COMMUNICATION - interference threshold as a function of band width; tables of probabilities & distribution of voltages in speech, etc; SPEED OF SIGNALING & CHANNEL CAPACITY - in the absence of noise; signaling at Nyquist rate in presence of noise; MacColl's proposal for rapid signalling; more; REDUCTION OF SIGNAL POWER THROUGH THE USE OF REDUNDANT CODES - qpplication of error-correcting codes to one-way systems of communication; error correction using both directions of transmission; more;

AMPLITUDE MODULATION - noise & interference; more; AMPLITUDE MODULATORS & DEMODULATORS - transmission distortion etc; AMPLITUDE-MODULATION SYSTEMS - carrier & both sidebands; reduced carrier; single sideband; vestigial; Day's system, more;

FREQUENCY MODULATION - FREQUENCY MODULATORS & DEMODULATORS; NOISE & INTERFERENCE IN FM SYSTEMS; PULSE-MODULATION ESSENTIALS; PULSE-AMPLITUDE MODULATION; PULSE-DURATION MODULATION; PULSE-POSITION; PULSE-CODE PCM; MOBILE PULSE-MODULATION SYSTEMS synchronous nonsynch etc. MORE.