Pilot-Aided Optical Signal-to-Noise Ratio Estimation for Direct-Detection OFDM Systems

We propose an optical signal-to-noise ratio (OSNR) estimation method for direct-detection optical orthogonal frequency division multiplexing (DDO-OFDM) systems by calculating the electrical SNR of one pilot subcarrier based on correlation. Simulation and experiment are conducted to verify this OSNR...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 27; no. 11; pp. 1165 - 1168
Main Authors Gao, Shuang, Huang, Lingchen, Chan, Chun-Kit
Format Journal Article
LanguageEnglish
Published New York IEEE 01.06.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Adaptive optics
Correlation
Direct-Detection Optical OFDM
Mathematical analysis
Noise levels
OFDM
Optical communication
Optical fibers
Optical noise
optical performance monitoring
Optical receivers
Orthogonal Frequency Division Multiplexing
OSNR
Pilots
Signal to noise ratio
Simulation
direct-detection optical OFDM
OSNR
optical performance monitoring
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Summary:We propose an optical signal-to-noise ratio (OSNR) estimation method for direct-detection optical orthogonal frequency division multiplexing (DDO-OFDM) systems by calculating the electrical SNR of one pilot subcarrier based on correlation. Simulation and experiment are conducted to verify this OSNR estimation method in a 15-Gb/s DDO-OFDM system. The maximum OSNR estimation error is 0.8 dB within an OSNR range of 8-28 dB for 100- and 200-km transmission distances.
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ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2413365