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Optical Fiber Telecommunications VB, 5th Edition
book

Optical Fiber Telecommunications VB, 5th Edition

by Ivan Kaminow, Tingye Li, Alan E. Willner
July 2010
Intermediate to advanced content levelIntermediate to advanced
928 pages
33h 42m
English
Academic Press
Content preview from Optical Fiber Telecommunications VB, 5th Edition
3.3.6 Phase Estimation
Since the linewidth of semiconductor distributed feedback (DFB) lasers used as
the transmitter and LO typically ranges from 100 kHz to 10 MHz, the optical
carrier phase
n
(t) varies much more slowly than the phase modulation, whose
symbol rate is 10 Gsymbol/s in the experiments described in Section 3.4. There-
fore, by averaging the carrier phase over many symbol intervals, it is possible to
obtain an accurate phase estimate. In the following, assuming the M-ary PSK
modulation, we explain the phase-estimation procedure, but such procedure can
easily be extended to quadrature amplitude modulation (QAM).
The phase of the complex ...
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Publisher Resources

ISBN: 9780123741721