Method and Apparatus for Using Multicarrier Interferometry to Enhance optical Fiber Communications
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United States of America Patent
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Issued Date -
Feb 1, 2007
app pub date -
Jun 14, 2006
filing date -
Feb 12, 1998
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Abandoned
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Abstract
Multicarrier spreading codes map data symbols to a sequence of orthogonal pulse shapes generated from a superposition of orthogonal subcarriers. The orthogonal subcarriers may include OFDM subcarriers, frequency-hopped subcarriers, or chirped subcarriers. Multicarrier spread spectrum may employ a combination of orthogonal frequency division multiple access, time division multiple access, and code division multiple access. Receivers configured to use multi-user detection may employ a combination of time-domain processing and frequency-domain processing.
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