Optical communications – Transmitter and receiver system – Including alignment between transmitter and receiver
Reexamination Certificate
2005-01-04
2005-01-04
Chan, Jason (Department: 2633)
Optical communications
Transmitter and receiver system
Including alignment between transmitter and receiver
C398S154000, C398S161000
Reexamination Certificate
active
06839521
ABSTRACT:
A photonic arbitrary waveform modem utilizes a bipolar coding scheme. The bipolar coding scheme includes an arbitrary waveform modem which includes a plurality of tapped delay lines and is implemented by partitioning each optical frequency chip into positive and negative segments. Signals are decoded by effectively multiplying the transmit and receive code vectors and individually summing the positive and negative tap weights. The positive and negative tap weights are differenced to recreate the transmitted signal. The bipolar coding scheme allows for the use of truly orthogonal codes which decreases the interference and reduces the probability of detection.
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Chan Jason
Curs Nathan
Katten Muchin Zavis & Rosenman
Northrop Grumman Corporation
Paniaguas John S.
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