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Error Vector Magnitude as a Performance Measure for Advanced Modulation Formats
2012
IEEE Photonics Technology Letters
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We then show that using appropriate algorithms, Nyquist pulse shaped modulation formats can be encoded on a single wavelength at speeds beyond 100 Gbit/s in real-time. ...
Finally we discuss the proper reception of Nyquist pulses. ...
Optics & Photonics (KSOP), and from the German Research Foundation (DFG). ...
doi:10.1109/lpt.2011.2172405
fatcat:nvtrqhbqn5de3fqsw3fkm2wi4a
Real-time Nyquist pulse generation beyond 100 Gbit/s and its relation to OFDM
2011
Optics Express
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We then show that using appropriate algorithms, Nyquist pulse shaped modulation formats can be encoded on a single wavelength at speeds beyond 100 Gbit/s in real-time. ...
Finally we discuss the proper reception of Nyquist pulses. ...
Optics & Photonics (KSOP), and from the German Research Foundation (DFG). ...
doi:10.1364/oe.20.000317
pmid:22274355
fatcat:5hi46cpqhvcdlmimgncy47vplq
Design and Experimental Verification of a Novel Error-Backpropagation-Based Background Calibration for Time Interleaved ADC in Digital Communication Receivers
[article]
2022
arXiv
pre-print
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performance when 64-QAM and 256-QAM schemes are tested. ...
Measurements on an emulation platform which includes an 8 bit, 4 GS/s TI-ADC prototype chip fabricated in 130nm CMOS technology, show an almost ideal mitigation of the impact of the mismatches on the receiver ...
We consider a DP optical coherent system with a 64-QAM modulation scheme, and a symbol rate of 1/T = 96 GBd. ...
arXiv:2204.04806v1
fatcat:6cxwhezpa5e3lhepyi55l3k22u
Ultra-High-Capacity Optical Packet Switching Networks with Coherent Polarization Division Multiplexing QPSK/16QAM Modulation Formats
2017
Photonics
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This burst-mode receiver is suitable for optical packetized networks that make use of advanced modulation formats such as quadrature amplitude modulation (QAM). ...
Previously, extensive research has been carried out in our group on OPS-related subsystems. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/photonics4020027
fatcat:rk7a6hau2vclhknq37mmettqnq
Subbanded DSP Architectures Based on Underdecimated Filter Banks for Coherent OFDM Receivers: Overview and recent advances
2014
IEEE Signal Processing Magazine
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) and carrier phase recovery (CPR). ...
(Four Taps) per
Sub-Carrier
2 × 2 MIMO
POL DEMUX
Drop
High/Low
Half-Band
Polar MSDD
Polar MSDD
X
Y
1.66 GBd
1.66 GBd
DFT-Despread
Carrier Recovery
From SB at
Mirror
Spectral ...
uSeful for wIrelIne and wIreleSS electrIcal tranSMISSIon. ...
doi:10.1109/msp.2013.2291015
fatcat:y6dthbnlardf5ewunjn7cgjrwi
Full flex-grid asynchronous multiplexing demonstrated with Nyquist pulse-shaping
2014
Optics Express
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The input power dynamic range of a semiconductor optical amplifier and its relevance for access network applications," IEEE Photon. ...
We give details on the transceiver design with digital signal processing and investigate the implementation penalty as a function of several design parameters such as limited filter length and effective ...
Acknowledgments This work was supported by the EU projects ACCORDANCE, OTONES, and FOX-C, the Agilent University Relations Program, the German BMBF project CONDOR, by the Karlsruhe School of Optics & Photonics ...
doi:10.1364/oe.22.010923
pmid:24921791
fatcat:xu34funtzfbbjeqysbywlfkv3y
Design of a 1 Tb/s Superchannel Coherent Receiver
2016
Journal of Lightwave Technology
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We demonstrate detection of a superchannel with net bit rate in excess of 1 Tb/s with a single coherent receiver. An 11 10 GBd DP-64QAM Nyquist superchannel is used, with 1.32 Tb/s gross bit rate. ...
We demonstrate detection of a superchannel with net bit rate in excess of 1 Tb/s with a single coherent receiver. An 11 × 10 GBd DP-64QAM Nyquist superchannel is used, with 1.32 Tb/s gross bit rate. ...
His doctoral work was concerned with the development of equalization and modulation techniques for the mitigation of fiber nonlinearity in coherent optical transmission systems. He ...
doi:10.1109/jlt.2016.2519260
fatcat:lur3zxtn4fcp5fchkm3prfguma
D3.2 First validation of the METRO-HAUL node architecture and optical solutions
2019
Zenodo
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The deliverable also includes an early description of the METRO-HAUL node control and management environment and the developed software for controlling all the OIE developed in T3.4. ...
D3.2 reports the first validation of the METRO-HAUL node architecture and the interconnection, transmission and switching optical solutions developed in T3.1-T3.3 in different disaggregated scenarios. ...
prototype in a 2×16-GBd dual-carrier polarization-division multiplexed (PDM) 16-QAM configuration and the corresponding optical spectrum. ...
doi:10.5281/zenodo.3497044
fatcat:zw3dovnytjfsjjwp7lbx7qhyou
Machine Learning Applications for Short Reach Optical Communication
2022
Photonics
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One of the techniques that has attracted intensive interests in short-reach optical communications is machine learning (ML). ...
With the rapid development of optical communication systems, more advanced techniques conventionally used in long-haul transmissions have gradually entered systems covering shorter distances below 100 ...
onto the optical carrier, where both single optical carrier or multiple optical carriers via
WDM can be used. ...
doi:10.3390/photonics9010030
fatcat:n436p2z4vvbhlltafonxxnai5y
Software defined elastic optical networking in temporal, spectral, and spatial domains
2014
Photonic network communications
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OpenFlow-based 3D-EON testbed at UC Davis includes optical supervisory channel with optical performance monitoring for software-defined networking with an adaptive observe-analyze-act cycle. ...
Routing, spectral, spatial mode, and modulation format assignment with fragmentation awareness as well as hitless defragmentation for high capacity, high quality of service, and resource-efficient networking ...
Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) ...
doi:10.1007/s11107-014-0448-0
fatcat:na4peuznubdb5clbxhxawai6ym
Real-time Digital Signal Processing for Software-defined Optical Transmitters and Receivers
2014
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We vary the modulation of the SCs using quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM) with 16 (16QAM) and 64 states (64QAM). ...
Since we used the filters for an M-ary QAM Tx, we realized the IR generators of Fig. 4 .16 with LUTs for avoiding multiplications. ...
Optical signals on a single optical carrier with data rates of up to 336 Gbit/s were shown. ...
doi:10.5445/ksp/1000042847
fatcat:juzwyq5mazhxtlan73n756h4lq
A High Performance FPGA Implementation of a Feed-Forward Carrier Phase Recovery Algorithm for 16-QAM Real-Time Coherent Receivers
[article]
2017
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The current thesis aims at implementing a high efficiency, feed-forward Carrier Phase Recovery algorithm on an FPGA platform, targeted at 16-QAM real-time Digital Coherent Receivers. ...
While the bandwidth efficiency increases a lot with higher constellations usage (16-QAM, 64-QAM, 256-QAM etc) the noise tolerance of the link becomes even more critical and Carrier Recovery requires state-of-the-art ...
An example is shown in the figure 4.2 below. ...
doi:10.26240/heal.ntua.14619
fatcat:pkeyyhjctvcnndcievuxtyroa4
Single-Laser Multi-Terabit/s Systems
2013
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So a combination of amplitude and phase modulation has become the most common scheme. Usually, quadrature amplitude modulation (QAM) is used when modulating phase and amplitude of an optical carrier. ...
The effect of the nonlinearity of the modulator on a 16 QAM signal is displayed in Fig. A.24 . ...
Second, an optical comb source producing 325 equally spaced, high-quality carriers enables spectrally efficient multiplexing schemes. ...
doi:10.5445/ksp/1000033390
fatcat:5ivizznxjrfutj5egzqf7v7p5u
Performance improvement of optical high-speed short-range communication systems utilizing bandwidth extension and advanced digital signal processing
2019
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The first one utilizes a bandwidth extension concept based on analog mixing to increase the signal bandwidth beyond the limits of today's signal generators. ...
use of higher order modulation formats. ...
Fig. 3 . 3 30 shows the measured BERs for 40 GBd of 4 and 8-PAM in the lower sub-band and 16 GBd of 8, 16 and 32-QAM in the upper sub-band for different lengths of optical fiber. ...
doi:10.14279/depositonce-9107
fatcat:mane6ehjvrcyhfdw4vahxqxiii
Silicon-organic hybrid devices for high-speed electro-optic signal processing
2018
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Among the various elements of the silicon photonics platform, electro-optic IQ modulators play an important role. ...
In this book, silicon-organic hybrid (SOH) integration is used to realize electro-optic IQ modulators for complex signal processing. ...
For the 16 QAM experiment, we estimate an energy consumption of only 19 fJ/bitthe lowest value reported so far for 16QAM signaling at 28 GBd. ...
doi:10.5445/ksp/1000080658
fatcat:u3r26iwmevfj7e4gk76vtkqu2m
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