Novel spread spectrum codec apparatus and method
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United States of America Patent
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Jan 14, 1992
Grant Date -
N/A
app pub date -
Aug 6, 1990
filing date -
Aug 6, 1990
priority date (Note) -
Expired
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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.
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