Cryptography – Key management – Having particular key generator
Patent
1996-02-20
1998-12-08
Tarcza, Thomas H.
Cryptography
Key management
Having particular key generator
380 46, 380 47, H04L 904, H04L 900
Patent
active
058481605
ABSTRACT:
Apparatus and a method for generating a digital synthesized Gaussian noise-like waveform that may be used to modulate and demodulate communication data. The present invention uses a seed input that addresses a read only memory look-up table, for example, containing digital samples having Gaussian statistics. A sequence generator generates a pair of pseudo-random sequences in response to the seed input that address the read only memory to look up and output a pair of pseudo-random Gaussian samples that are used to generate the Gaussian noise-like waveform. A processor converts the pair of pseudo-random Gaussian samples into corresponding analog I and Q signals, and a modulator 33 modulates the analog I and Q signals to generate a modulated output signal having the Gaussian noise-like waveform.
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Cai Khiem V.
O'Connor Roger J.
Alkov Leonard A.
Lenzen, Jr. Glenn H.
Raytheon Company
Schubert William C.
Tarcza Thomas H.
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