Novel spread spectrum codec apparatus and method

Details Novel spread spectrum codec apparatus and method Novel spread spectrum codec apparatus and method

1990-08-06

1992-01-14

Gregory, Bernarr E.

Pulse or digital communications

Repeaters

Testing

380 34, 375 68, 375 80, 375 94, 370 19, H04L 2730

Patent

active

050816454

ABSTRACT:
A system comprising apparatuses and methods for encoding and decoding spread spectrum signals is disclosed. Signals are encoded by modulating numerical sequences selected from an orthonormal basis of numerical sequences to provide channel coding. The modulated sequences are then combined to form an encoded signal. Because of the orthonormal character of the sequences, the encoded signal may be easily decoded using a matched filter. A method for generating long sequences from the product of shorter sequences is also disclosed.

REFERENCES:
patent: 4351064 (1982-09-01), Ewanus
patent: 4894842 (1990-01-01), Broekhoven et al.

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