Soft detection of multichip DPSK over the nonlinear fiber-optic channel

We analyze the performance of a recently proposed multichip differential phase-shift-keying (DPSK) format over the nonlinear fiber-optic channel. For a single wavelength nonlinear phase-noise-limited channel, a multichip DPSK receiver based on a three-chip observation can attain more than two orders...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 17; no. 9; pp. 2001 - 2003
Main Authors Yadin, Y., Bilenca, A., Nazarathy, M.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2005
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
AWGN
Biomedical optical imaging
Channels
Differential phase-shift keying (DPSK)
Differential quadrature phase shift keying
Equivalence
Fiber nonlinear optics
Fiber optics
Format
Nonlinearity
Optical fiber communication
Optical fibers
Optical modulation
Optical noise
Optical receivers
Optical sensors
phase modulation
phase noise
Receivers
Wavelengths
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Summary:We analyze the performance of a recently proposed multichip differential phase-shift-keying (DPSK) format over the nonlinear fiber-optic channel. For a single wavelength nonlinear phase-noise-limited channel, a multichip DPSK receiver based on a three-chip observation can attain more than two orders of magnitude bit-error-rate reduction relative to a standard DPSK receiver, or equivalently /spl sim/1-dB improvement in Q-factor, significantly exceeding the 0.2-dB improvement achieved by the same format over a linear optical channel.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.852325