Method and apparatus for converting binary information into a hi

Details Method and apparatus for converting binary information into a hi Method and apparatus for converting binary information into a hi

1979-04-30

1984-07-17

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 39, 375 43, H04L 2534, H04L 2702

Patent

active

044610114

ABSTRACT:
An incoming bit stream is digitally processed to obtain both in-phase and quadrature-phase 7-level correlative signals. The two 7-level correlative signals are separately band limited to a passband having a bandwidth that is about 1/8th of the bit rate of the original bit stream, and these band limited signals are then separately analog modulated, respectively, using in-phase and quadrature-phase components derived from a line carrier oscillator. The modulation products are then combined in a summing circuit to derive a signal-sideband 7-level correlative signal.

REFERENCES:
patent: 3443229 (1969-05-01), Becker
patent: 3588702 (1971-06-01), Tisi
patent: 3846583 (1974-11-01), Boulter
patent: 4086587 (1978-04-01), Lender
Proceedings of IRE. vol. 44, No. 12, Dec. 1956; pp. 1703-1705; A Third Method of Generation and Detection of Single Sideband Signals, Donald K. Weaver, Jr.

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