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Joint simple blind IQ imbalance compensation and adaptive equalization for 16-QAM optical communications

Trung-Hien Nguyen, Pascal Scalart, Michel Joindot, Mathilde Gay, Laurent Bramerie, Christophe Peucheret, Arnaud Carer, Jean-Claude Simon, Olivier Sentieys
2015 2015 IEEE International Conference on Communications (ICC)  
We present a novel simple blind adaptive compensation method for in-phase/quadrature (IQ) imbalance in m-ary quadrature amplitude modulation (mQAM) coherent optical fiber communication systems.  ...  The equalization capability remains even in the presence of group velocity dispersion along the link, which is numerically confirmed with optical fiber transmission up to 1200 km and 20 phase imbalance  ...  CONCLUSION In this paper, we have proposed and demonstrated a joint blind adaptive equalization method as a promising candidate for inphase/quadrature imbalance compensation in m-QAM systems.  ... 
doi:10.1109/icc.2015.7249101 dblp:conf/icc/NguyenSJGBPCSS15 fatcat:a3pbnuamcjfrtbcfdhrj6g3yse

Blind Joint Polarization Demultiplexing and IQ Imbalance Compensation for M-QAM Coherent Optical Communications

Marwa Kazdoghli Lagha, Robin Gerzaguet, Laurent Bramerie, Mathilde Gay, Marie-Laure Chares, Christophe Peucheret, Pascal Scalart
2020 Journal of Lightwave Technology  
A novel joint polarization demultiplexing and IQ imbalance compensation scheme for coherent optical communications that uses global update is proposed and analyzed through numerical simulations.  ...  A comparison of the proposed joint method with the traditional CMA for polarization demultiplexing followed by BASS for IQ imbalance compensation is also reported.  ...  JOINT ALGORITHM FOR TX-IQ IMBALANCE COMPENSATION AND POLARIZATION DEMULTIPLEXING A.  ... 
doi:10.1109/jlt.2020.2986601 fatcat:xe4tjwcatvfnhgqmhtlck2yq2a

Optimization of DP-M-QAM Transmitter Using Cooperative Coevolutionary Genetic Algorithm

Julio Cesar Medeiros Diniz, Francesco Da Ros, Edson Porto da Silva, Rasmus Thomas Jones, Darko Zibar
2018 Journal of Lightwave Technology  
of residual error as low as 0.24 ps, 0.019 V, 0.56°, and 0.003, respectively, for a dual polarization IQ modulator with Vπ = 4V and a 16QAM reference signal operating at 16 GBd.  ...  We present a method for joint optimization of transmitter in-phase, quadrature and inter-polarization time skew, amplitude mismatch, and bias voltages.  ...  Bravalheri for valuable discussions. The authors alone are responsible for the content.  ... 
doi:10.1109/jlt.2018.2815347 fatcat:nwizi37j3banhnqkomf75q7ubm

New metric for IQ imbalance compensation in optical QPSK coherent systems

Trung-Hien Nguyen, Pascal Scalart, Mathilde Gay, Laurent Bramerie, Christophe Peucheret, Fausto Gomez-Agis, Olivier Sentieys, Jean-Claude Simon, Michel Joindot
2018 Photonic network communications  
We report on a simple alternative method for the compensation of quadrature imbalance in optical quadrature phase-shift-keying (QPSK) coherent systems.  ...  By introducing a new metric, the phase imbalance can be determined and compensated. The proposed method is theoretically and numerically analyzed.  ...  Those include joint transmitter (Tx) and receiver (Rx) IQ imbalance compensation [8] - [9] for the blind compensation class (in the sense that no known training symbols are required), the pilot-assisted  ... 
doi:10.1007/s11107-018-0783-7 fatcat:u6gjf74zhzguhbiuy6zsufzaku

PhyCOM: A Multi-Layer Parametric Network for Joint Linear Impairments Compensation and Symbol Detection [article]

Vincent Choqueuse, Alexandru Frunza, Stéphane Azou, Pascal Morel
2022 arXiv   pre-print
In this paper, we focus on the joint impairments compensation and symbol detection problem in communication systems.  ...  Numerical examples are provided to demonstrate the effectiveness of PhyCOM networks with communication systems corrupted by transmitter and receiver IQ imbalances, carrier frequency offset, finite impulse  ...  Simple Physical Communication Model In the first experiment, we consider a simple communication model composed of a FIR channel composed of 8 taps, a Carrier Frequency Offset, an IQ imbalance, and a Gaussian  ... 
arXiv:2203.00266v1 fatcat:qfp6lo5qjrhm5ony3ux7pabw7q

Adaptive Probabilistic Shaped Modulation for High-Capacity Free-Space Optical Links

P. Fernando, Abel, Daniel, Federico, N. Artur, A. Marco, T. Bruno, Andrea, António L. Teixeira, R. Maria C., P. Paulo
2022 Zenodo  
Infrared free-space optics (FSO) provide an attractive solution for ultra-high-capacity wireless communications.  ...  Taking advantage of the arbitrary bit-rate granularity provided by probabilistic constellation shaping (PCS), and resorting to a simple moving average channel estimator, we demonstrate 400G+ transmission  ...  The first stages of DSP are aimed at compensating for the non-ideal characteristics of the receiver frontend, including IQ skew compensation and amplitude imbalance compensation resorting to the Gram-Schmidt  ... 
doi:10.5281/zenodo.6298782 fatcat:xucmx4tn5jdhffq6dsxhqxheke

Recent progress on high-speed optical transmission

Jianjun Yu, Junwen Zhang
2016 Digital Communications and Networks  
The recently reported high spectral efficiency (SE) and high-baud-rate signal transmission are all based on digital coherent optical communications and digital signal processing (DSP).  ...  DSP simplifies the reception of advanced modulation formats and also enables the major electrical and optical impairments to be processed and compensated in the digital domain, at the transmitter or receiver  ...  The electrical spectra for the 16 GBaud N-WDM PDM 16-QAM signal with and without pre-equalization are shown in Fig. 15 (a) [67, 68] .  ... 
doi:10.1016/j.dcan.2016.03.002 fatcat:gveqxta7abf3rpq3oqy3kgw4pe

Machine Learning Techniques to Mitigate Nonlinear Phase Noise in Moderate Baud Rate Optical Communication Systems [chapter]

Eduardo Avendaño Fernández, Ana María Cárdenas Soto, Neil Guerrero Gonzalez, Giovanni Serafino, Paolo Ghelfi, Antonella Bogoni
2019 Intelligent System and Computing [Working Title]  
Improvements of 3.2 dB for 16-QAM, and 1.4 dB for 4+12 PSK in the OSNR scale as a function of the bit error rate are obtained without requiring additional compensation algorithms.  ...  Phase-offset and in-phase and quadrature imbalance may be detected on the received constellation and compensated by applying thresholding boundaries obtained from impairment characterization through statistical  ...  A special thanks to the Universidad Pedagógica y Tecnológica de Colombia (UPTC) for their financial support to encourage my doctoral studies by agreement 041.  ... 
doi:10.5772/intechopen.88871 fatcat:rpvsp6wixndo3b2phdasfpyaie

A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions

Isiaka Alimi, Romil Patel, Nuno Silva, Chuanbowen Sun, Honglin Ji, William Shieh, Armando Pinto, Nelson Muga
2021 Applied Sciences  
This paper reviews recent progress on different high-speed optical short- and medium-reach transmission systems.  ...  Furthermore, a comprehensive tutorial on high-performance, low-cost, and advanced optical transceiver (TRx) paradigms is presented.  ...  208 Gb/s (32-QAM) and 184 Gbit/s (16-QAM); i 3 16-QAM and 32-QAM s; j 128 subcarriers (QPSK) and 640 subcarriers (16-QAM); k 448 Gb/s/1.792 Tb/s and 160 km/80 km for single-channel and WDM transmission  ... 
doi:10.3390/app11167554 fatcat:fbijur7yjzgopi5i2r4ywzwxde

Increasing the information rates of optical communications via coded modulation: a study of transceiver performance

Robert Maher, Alex Alvarado, Domaniç Lavery, Polina Bayvel
2016 Scientific Reports  
applied to maximise the IR of a SNR-limited optical communications system.  ...  Optical fibre underpins the global communications infrastructure and has experienced an astonishing evolution over the past four decades, with current commercial systems transmitting data rates in excess  ...  Acknowledgements Financial support under the UK EPSRC Programme Grant UNLOC (UNLocking the capacity of Optical Communications) EP/J017582/1.  ... 
doi:10.1038/srep21278 pmid:26864633 pmcid:PMC4750034 fatcat:xdvkqarb3naivmojm7pgs6h6ha

Revisiting Efficient Multi-Step Nonlinearity Compensation with Machine Learning: An Experimental Demonstration

Vinicius Oliari, Sebastiaan Goossens, Christian Hager, Gabriele Liga, Rick M. Butler, Menno van den Hout, Sjoerd van der Heide, Henry D. Pfister, Chigo M. Okonkwo, Alex Alvarado
2020 Journal of Lightwave Technology  
Efficient nonlinearity compensation in fiber-optic communication systems is considered a key element to go beyond the "capacity crunch".  ...  Our main contribution lies in an experimental demonstration of this approach for a 25 Gbaud single-channel optical transmission system.  ...  Orthonormalization using blind moment estimation is applied to the signal for receiver optical front-end IQ compensation (gain imbalance and offset angle between the in-phase and quadrature components)  ... 
doi:10.1109/jlt.2020.2994220 fatcat:j5ma2utdzjgrpcgys5jrkarb5u

Digital Signal Processing for Coherent Transceivers Employing Multilevel Formats

Md Faruk, Seb Savory, Apollo-University Of Cambridge Repository, Apollo-University Of Cambridge Repository
We begin by discussing algorithms that correct for imperfections in the optical to digital conversion, including IQ imbalance and timing skew.  ...  Next, we discuss channel equalization including means for their realization for both quasi-static and dynamic channel impairments.  ...  τIQ [% of symbol-period] 4-QAM 3.8 28 26 16-QAM 1.6 10.5 11 64-QAM 0.6 4 4.2 256-QAM 0.2 1.4 1.5 Fig. 8. Configuration of 2×2 MIMO structured adaptive FIR filters.  ... 
doi:10.17863/cam.8992 fatcat:j5oybnwlwndntkir3r2wpidpzy

2020 Index IEEE Transactions on Vehicular Technology Vol. 69

2020 IEEE Transactions on Vehicular Technology  
Yu, X., A Joint Design of Platoon Communication and Control Based on LTE-V2V; 15893-15907 Hong, C.S., see Nguyen, M.N.H., TVT May 2020 5618-5633 Hong, C.S., see Chen, D., TVT May 2020 5634-5646 Hong  ...  + Check author entry for coauthors ami-mFading Channels With Integer and Non-Integerm; TVT March 2020 2785-2801 Hoang, T.M., Tran, X.N., Nguyen, B.C., and Dung, L.T., On the Performance of MIMO Full-Duplex  ...  ., +, TVT May 2020 5068-5078 Joint Compensation of Transmitter and Receiver I/Q Imbalances for SC-FDE Systems.  ... 
doi:10.1109/tvt.2021.3055470 fatcat:536l4pgnufhixneoa3a3dibdma

Wireless Myths, Realities, and Futures: From 3G/4G to Optical and Quantum Wireless

L. Hanzo, H. Haas, S. Imre, D. O'Brien, M. Rupp, L. Gyongyosi
2012 Proceedings of the IEEE  
This paper summarizes some recent results in quantum computing and the corresponding application areas in wireless communications.  ...  Quantum-assisted wireless communications exploits the extra computing power offered by quantum mechanics based architectures.  ...  They would also like to thank the current and past members of the optical wireless communications groups at Oxford University, Oxford, U.K., and The University of Edinburgh, Edinburgh, U.K., for their  ... 
doi:10.1109/jproc.2012.2189788 fatcat:ieo4t2fwarcrjbxzfj3u7ejty4

2021 Index IEEE Transactions on Microwave Theory and Techniques Vol. 69

2021 IEEE transactions on microwave theory and techniques  
Departments and other items may also be covered if they have been judged to have archival value. The Author Index contains the primary entry for each item, listed under the first author's name.  ...  The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination.  ...  256-QAM for 5-G Communications.  ... 
doi:10.1109/tmtt.2022.3156771 fatcat:7iov55dzdnbprgd42epirpfaia
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