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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
important ways orthogonality is used in optical communications for modulation
and multiplexing purposes:
Orthogonality in time is achieved by having disjoint time slots within the symbol
period T
S
represent different modulation symbols. The resulting modulation
format is called pulse position modulation (PPM) [52, 53] and is depicted in
Figure 2.4(a) for the case of a ternary modulation alphabet carrying log
2
3
1.6 bits/symbol. By assigning non-overlapping time slots to different users of a
common communication channel, one arrives at time division multiplexing (TDM)
shown in Figure 2.4(e), where users A through Z shar e slots in a TDM frame.The
synchronous ...
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Publisher Resources

ISBN: 9780123741721