Communication system and apparatus with synchronous orthogonal coding
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United States of America Patent
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Aug 17, 2004
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N/A
app pub date -
Jun 9, 2000
filing date -
Jun 11, 1999
priority date (Note) -
Expired
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Abstract
Code-multiplexed communication systems, apparatus, and methods include coders that encode and decode data streams with synchronous, substantially orthogonal codes. Code-multiplexed communications systems encode data signals with such codes to control levels of decoding artifacts such as cross-talk at times or time intervals in which data is recovered. Some systems are based on synchronous, orthogonal codes that are obtained from complex orthogonal vectors. In an example, a three-level temporal-phase code that includes nine code chips and encodes and decodes data signals is a seven-channel communication system.
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