System and method for coherent detection with digital signal procession
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United States of America Patent
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Nov 21, 2017
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Jan 22, 2015
app pub date -
Feb 8, 2013
filing date -
Feb 10, 2012
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Abstract
Aspects of the present invention include apparatus and methods for transmitting and receiving signals in communication systems. A multicarrier generator generates a multicarrier signal. An optical demultiplexer separates the multicarrier signal into separate multicarrier signals. At least one QPSK modulator modulates signals from the separate multicarrier signals. An optical multiplexer combines the QPSK modulated signals into a multiplexed signal. The multiplexed signal is then transmitted.
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