Modulation format and baud-rate identification using asynchronous single channel sampling based on CNN

2020 ◽  
Vol 463 ◽  
pp. 125363
Author(s):  
Jie Gao ◽  
Xian Zhou ◽  
Qirui Fan ◽  
Dongxu Lu ◽  
Jiahao Huo ◽  
...  
Keyword(s):  
Single Channel ◽  
Baud Rate ◽  
Modulation Format

Simultaneous OSNR Monitoring and Modulation Format Identification Using Asynchronous Single Channel Sampling

2015 ◽  
Author(s):  
Faisal Nadeem Khan ◽  
Yi Yu ◽  
Ming Chieng Tan ◽  
Changyuan Yu ◽  
Alan Pak Tao Lau ◽  
...  
Keyword(s):  
Single Channel ◽  
Modulation Format

400-Gb/s Modulation-Format-Independent Single-Channel Transmission With Chromatic Dispersion Precompensation Based on OAWG

2010 ◽  
Vol 22 (12) ◽  
pp. 905-907 ◽  
Author(s):  
David J. Geisler ◽  
Nicolas K. Fontaine ◽  
Ryan P. Scott ◽  
Tingting He ◽  
Loukas Paraschis ◽  
...  
Keyword(s):  
Single Channel ◽  
Chromatic Dispersion ◽  
Modulation Format

INFLUENCE OF EXTINCTION RATIO ON THE PERFORMANCE OF RZ-ODPASK MODULATION FORMAT

2009 ◽  
Vol 23 (11) ◽  
pp. 2479-2489
Author(s):  
XIAOJUN LI ◽  
AIJUN WEN ◽  
ZENGJI LIU ◽  
TAO SHANG
Keyword(s):  
Single Channel ◽  
Chromatic Dispersion ◽  
Extinction Ratio ◽  
Optical Fields ◽  
Analytical Methodology ◽  
Modulation Formats ◽  
Modulation Format ◽  
Fiber Nonlinearity ◽  
Shift Keying ◽  
Phase Amplitude

The influence of extinction ratio (ER) on the performance of 120 Gbps return-to-zero octal differential phase-amplitude-shift keying (RZ-ODPASK) modulation format in single-channel transmission is investigated. Based on the modulation and demodulation schemes, the structures of RZ-ODPASK transmitter and receiver are presented; and expressions for the output optical fields and electrical currents of amplitude and phase tributaries are analytically acquired. As ER is a tradeoff for good performance of the two tributaries, the optimal ER for back-to-back configuration is theoretically derived as 2.32 dB for the first time, which is verified by simulation. Then the tolerances to residual chromatic dispersion (CD) and fiber nonlinearity of RZ-ODPASK transmission are numerically studied, respectively. The results indicate that phase tributary is more robust against both dispersion and nonlinearity impairment than the amplitude tributary. To balance the performance of the two tributaries, curves of the optimal ER values with the change of residual CD and fiber nonlinearity are also obtained, respectively. The results can be useful for the design of RZ-ODPASK systems; in the meantime, the analytical methodology described in this paper is applicable to other multilevel RZ-DPASK modulation formats.

scholarly journals Accurate model to predict performance of coherent optical transponder for high baud rate and advanced modulation format

2018 ◽  
Vol 26 (10) ◽  
pp. 12970 ◽  
Author(s):  
Qiang Wang ◽  
Yang Yue ◽  
Xuan He ◽  
Andre Vovan ◽  
Jon Anderson
Keyword(s):  
Baud Rate ◽  
Accurate Model ◽  
Modulation Format

scholarly journals Routing, Modulation Format, Baud Rate and Spectrum Allocation in Optical Metro Rings With Flexible Grid and Few-Mode Transmission

2017 ◽  
Vol 35 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Cristina Rottondi ◽  
Pierpaolo Boffi ◽  
Paolo Martelli ◽  
Massimo Tornatore
Keyword(s):  
Spectrum Allocation ◽  
Baud Rate ◽  
Modulation Format ◽  
Flexible Grid

scholarly journals Experimental demonstration of joint OSNR monitoring and modulation format identification using asynchronous single channel sampling

2015 ◽  
Vol 23 (23) ◽  
pp. 30337 ◽  
Author(s):  
Faisal Nadeem Khan ◽  
Yi Yu ◽  
Ming Chieng Tan ◽  
Waled Hussein Al-Arashi ◽  
Changyuan Yu ◽  
...  
Keyword(s):  
Single Channel ◽  
Experimental Demonstration ◽  
Modulation Format

scholarly journals Optimization of Q-Values for Coherent Optical Transmission Network

2015 ◽  
Vol 43 ◽  
pp. 63-72
Author(s):  
Abdul Gafur ◽  
M. S. Islam
Keyword(s):  
Optical Transmission ◽  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Noise Power ◽  
Transmission Network ◽  
Signal To Noise ◽  
Baud Rate ◽  
Optical Link ◽  
Modulation Format ◽  
Q Values

In this paper we have analyzed the Gaussian Non-linear Interference (GNLI) spectrum considering non identical channels, non-identical links and Amplified Spontaneous Emission (ASE) noise power spectrum for Coherent Optical Transmission Network (COTN) to calculate the Optical Signal to Noise Ratio (OSNR) and Quality (Q) values. In this study, three different Baud rate values (13.875Gbaud, 27.75Gbaud, and 55.5Gbaud) are considered to compute the Q values and OSNR in the COTN. Consequently, the COTN produces 111 Gb/s, 222 Gb/s and 444 Gb/s line rates for three different Baud rate values (13.875Gbaud, 27.75Gbaud, and 55.5Gbaud) respectively in PM-16QAM modulation format. It is confirmed that the OSNR is always greater than Q values. It is also found that the differences between OSNR and Q are 0.23dB, 1.73dB, and 3.24dB for 111Gb/s, 222Gb/s and 444Gb/s line rates respectively. Here transmission of launch power per span, number of channels, number of spans and the fiber dispersion in the optical link are considered.

scholarly journals Numerical comparison between DPSK 33, DPSK 66 and duo binary in WOC system

2021 ◽  
Vol 23 (1) ◽  
pp. 247
Author(s):  
Mustafa H. Ali ◽  
Hazim M. Ali ◽  
Tariq A. Hassan
Keyword(s):  
Single Channel ◽  
Superior Performance ◽  
Duty Ratio ◽  
Numerical Comparison ◽  
Q Factor ◽  
Small Aperture ◽  
Modulation Formats ◽  
Great Loss ◽  
Aperture Diameter ◽  
Modulation Format

OWC systems have turned into a state-of-the-art technology because of their superior performance uniqueness and its innumerable characteristic as compared to its RF. One of the OWC application is inter-satellite wireless optical communication (Is-WOC), this framework can be improved by using different ways such as advanced modulation formats and aperture diameter. We demonstrate an analysis based on the aperture diameter effect in transmission of single channel with 40 Gb/s Is-WOC system using three different modulation methods, differential phase-shift keying (DPSK) with a duty ratio to 66% and 33% and duobinary. Choosing these three modulations from various modulation format is done depending on the advantage they provide where the DPSK gives to fiber nonlinearity a powerful robustness and less susceptible to SPM and XPM and for system requirements of dispersion compensation in duobinary, it provides higher chromatic dispersion tolerance mitigate. The result shows the effect of different transmitter aperture diameter (from 2 to 20 cm) for a constant distance 200 km accomplished by quality factor and minimum BER. We conclude there is a great loss in the small aperture diameter, even in the presence of best modulation format, therefore as the aperture diameter increase the Q-factor increase, but some increased rise is linear and the other is changing from linear to non-linear in a fixed Q-factor point equal to 5.63.

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