Secure single sideband communication system using modulated nois

Details Secure single sideband communication system using modulated nois Secure single sideband communication system using modulated nois

1990-08-15

1992-07-21

Cangialosi, Salvatore

Cryptography

Communication system using cryptography

Wireless communication

375 1, H04L 900

Patent

active

RE0340049

ABSTRACT:
10. A transmitter for a secret communication system comprising a source of carrier frequency energy, a source of cyclically repetitive noise energy, means to synchronize the cyclical repetition rate of said noise energy with a sub-multiple of the frequency of said carrier frequency energy, means to reverse the phase of portions of said noise energy in accordance with a predetermined message code, means to modulate said carrier frequency energy with said encoded noise energy and means to transmit the suppressed carrier single sideband component of said carrier modulation.

REFERENCES:
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patent: 2401447 (1946-06-01), Wipff
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Polkinghorn et al., "A Single Sideband Short-Wave System for Transatlantic Telephony," (Bell System Monograph B-872), Proceedings of the Institute of Radio Engineers, vol. 23, No. 7, pp. 701-718, Jul. 1935.

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