Codierte Modulation, optimierte Decoder und Entzerrung für den faseroptischen Kanal

• Optical communication systems

2019

• F. Frey, J. K. Fischer, R. Fischer
  On Discrete-Time/Frequency-Periodic End-to-End Fiber-Optical Channel Models
  pre-print on arXiv: https://arxiv.org/abs/1907.06087
  
• F. Frey, S. Stern, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
  Coded Modulation Using a 512-ary Hurwitz-Integer Constellation
  45th European Conf. on Opt. Commun. (ECOC), Sept. 2019
• S. Stern, F. Frey, J. K. Fischer, R. Fischer
  Two-Stage Dimension-Wise Coded Modulation for Four-Dimensional Hurwitz-Integer Constellations
  International ITG Conference on Systems, Communications and Coding (SCC), Rostock, February 2019

2018

• F. Frey, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
  Improved Perturbation-based Fiber Nonlinearity Compensation
  44th European Conf. on Opt. Commun. (ECOC), Sept. 2018, Tu1F.6
• F. Frey, J. K. Fischer, R. Fischer
  Probability Distributions of Nonlinear Distortions Obtained from the Sampled Nonlinear Transfer Function
  ITG-Workshop 5.3.1, February 2018
• R. Elschner, R. Emmerich, C. Schmidt-Langhorst, F. Frey, P. Wilke Berenguer,
  J. K. Fischer, H. Grießer, D. Rafique, J.-P. Elbers, C. Schubert
  Improving Achievable Information Rates of 64-GBd PDM-64QAM by Nonlinear Transmitter Predistortion
  Opt. Fiber Commun. Conf. (OFC), 2018, paper M1C.2

2017

• F. Frey, L. Molle, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
  Single-step Perturbation-based Nonlinearity Compensation of Intra- and Inter-Subcarrier Nonlinear Interference
  43th European Conf. on Opt. Commun. (ECOC), Sept. 2017, P1.SC3.53
• M. Baier, F.M. Soares, Z. Zheng, C. Schmidt-Langhorst, R. Elschner, F. Frey, M. Gruner, J. K. Fischer, C. Schubert, M. Moehrle, N. Grote and M. Schell
  112-Gb/s PDM-PAM4 Generation and 80-km Transmission Using a Novel Monolithically Integrated Dual-Polarization Electro-Absorption Modulator InP PIC
  43th European Conf. on Opt. Commun. (ECOC), Sept. 2017, paper Th.1.C.3
• P. Wilke-Berenguer, F. Frey, C. Schubert, J. K. Fischer
  Nonlinear Pre-Distortion of Transmitter Components [Invited]
  IEEE Photonics Conf. (IPC), October 2017
• F. Frey, F. Wäckerle, J. K. Fischer, R. Fischer
  Optimized Detection and Decoding of 4D Signals for the Nonlinear Fiber-optical Channel [Invited]
  Sig. Proc. Photonic Commun. (SPPCom), July 2017
• F. Frey, R. Elschner, J. K. Fischer
  Estimation of Trends for Coherent DSP ASIC Power Dissipation for Different Bitrates and Transmission Reaches
  18. ITG-Fachtagung Photonische Netze, May 2017
• F. Frey, J. K. Fischer, R. Fischer
  On the Frequency Dependence of the FWM Efficiency and its Application to Analytical Channel Models
  ITG-Workshop 5.3.1, February 2017
• F. Frey, R. Elschner, C. Schmidt-Langhorst, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
  Investigation of Nonlinear Inter-channel Interference in Heterogeneous Flexible Optical Networks
  International ITG Conference on Systems, Communications and Coding (SCC), Hamburg, February 2017

2016

• A. Aimone, F. Frey, R. Elschner, I. Garcia Lopez, G. Fiol, P. Rito, M. Gruner, A. C. Ulusoy, D. Kissinger, J. K. Fischer, C. Schubert, M. Schell
  DAC-less 32-GBd PDM-256-QAM using Low-Power InP IQ Segmented MZM
  IEEE Photonics Technol. Lett., vol. 29, no. 2, pp. 221-223, 2017
• F. Frey, R. Elschner, C. Schmidt-Langhorst, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
  Analysis of Temporal Correlations of Inter-Channel Interference in Heterogeneous Flexible Optical Networks
  Munich Workshop on Information Theory of Optical Fiber (MIO), Munich, December 2016

2015

• C. Schmidt-Langhorst, R. Elschner, F. Frey, R. Emmerich, and C. Schubert
  Experimental Analysis of Nonlinear Interference Noise in Heterogeneous Flex-Grid WDM Transmission
  41th European Conf. on Opt. Commun. (ECOC), 2015, paper Tu.1.4.3
• K. Habel, L. Fernandez, S. Weide, J. Hilt, V. Jungnickel, R. Elschner, C. Schubert, F. Frey, J. K. Fischer, and R. Freund
  5 Gbit/s Real-Time Processing Using π/4 -shift DQPSK for Bidirectional Radio-Over-Fibre System
  17th International Conference on Transparent Optical Networks (ICTON), 2015, paper Tu.D2.3.
• R. Elschner, F. Frey, C. Schmidt-langhorst, J. K. Fischer, and C. Schubert
  FPGA Implementation of a Data-Aided Single-Carrier Frequency-Domain Equalizer for Format-Flexible Receivers
  16. ITG-Fachtagung Photonische Netze, 2015
• S. Alreesh, C. Schmidt-langhorst, F. Frey, P. W. Berenguer, C. Schubert, and J. K. Fischer
  Transmission Performance of 4D 128SP-QAM With Forward Error Correction Coding
  IEEE Photonics Technol. Lett., vol. 27, no. 7, pp. 744–747, 2015
• J. K. Fischer, C. Schmidt-Langhorst, S. Alreesh, R. Elschner, F. Frey, P. W. Berenguer, L. Molle, M. Nolle, and C. Schubert
  Generation, transmission, and detection of 4-d set-partitioning QAM signals
  J. Lightwave Technol., vol. 33, no. 7, pp. 1445–1451, 2015
• M. Nölle, F. Frey, R. Elschner, C. Schmidt-Langhorst, J. K. Fischer, and C. Schubert
  Investigation of CAZAC Sequences for Data-Aided Channel Estimation Considering Nonlinear Optical Transmission
  Opt. Fiber Commun. Conf. (OFC), 2015, paper Th3G.2
• T. A. Eriksson, S. Alreesh, C. Schmidt-langhorst, F. Frey, P. W. Berenguer, C. Schubert, J. K. Fischer, P. A. Andrekson, M. Karlsson, and E. Agrell
  Experimental Investigation of a Four-Dimensional 256-ary Lattice-based Modulation Format
  Opt. Fiber Commun. Conf. (OFC), 2015, paper W4K.3.

2014

• J. K. Fischer, R. Elschner, F. Frey, J. Hilt, C. Kottke, and C. Schubert
  Digital signal processing for coherent UDWDM passive optical networks
  15. ITG-Fachtagung Photonische Netze, 2014, pp. 1–7
• J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, M. Nölle, C. Schmidt-Langhorst, and C. Schubert
  Bandwidth-variable transceivers based on four-dimensional modulation formats
  J. Lightwave Technol., vol. 32, no. 16, pp. 2886–2895, 2014.
• R. Elschner, F. Frey, C. Schmidt-Langhorst, J. K. Fischer, and C. Schubert
  Data-Aided DSP for Flexible Transceivers
  Sig. Proc. Photonic Commun. (SPPCom), 2014, paper SW1C.1.
• C. Kottke, J. K. Fischer, R. Elschner, F. Frey, J. Hilt, C. Schubert, D. Schmidt, Z. Wu, and B. Lankl
  Coherent UDWDM PON with joint subcarrier reception at OLT.
  Opt. Express, vol. 22, no. 14, pp. 16876–88, Jul. 2014
• F. Frey, R. Elschner, C. Kottke, C. Schubert, and J. K. Fischer
  Efficient Real-time Implementation of a Channelizer Filter with a Weighted Overlap-Add Approach
  40th European Conf. on Opt. Commun. (ECOC), 2014, paper Tu.3.1.3.
• F. Frey, R. Elschner, C. Schubert, and J. K. Fischer
  Efficient Digital Down-Conversion of Multicarrier Signals with a Weigthed Overlap-Add Filterbank
  ITG-Workshop 5.3.1, February 2014
• M. Nölle, F. Frey, R. Elschner, C. Schmidt-Langhorst, A. Napoli, and C. Schubert
  Performance Comparison of Different 8QAM Constellations for the Use in Flexible Optical Networks
  Opt. Fiber Commun. Conf. (OFC), 2014, paper W3B.2.
• T. Richter, M. Nölle, F. Frey, and C. Schubert
  Generation and Coherent Reception of 107-GBd Optical Nyquist BPSK, QPSK, and 16QAM
  IEEE Photonics Technol. Lett., vol. 26, no. 9, pp. 877–880, 2014.

2013

• C. Schmidt-Langhorst, F. Frey, M. Nölle, R. Elschner, C. Meuer, P. Wilke Berenguer, and C. Schubert
  Optimization of subcarrier spacing of 400-Gb/s dual-carrier Nyquist PDM-16QAM in a Flexgrid scenario
  39th European Conf. on Opt. Commun. (ECOC), 2013, p. P.5.1.
• R. Elschner, F. Frey, C. Schmidt-Langhorst, J. K. Fischer, M. Nölle, and C. Schubert,
  Software-defined Transponders for Future Flexible Grid Networks
  Photonic Networks and Devices (NETWORKS), 2013, paper NT2C.4.
• J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, M. Nölle, and C. Schubert
  Bandwidth-Variable Transceivers Based on 4D Modulation Formats for Future Flexible Networks
  39th European Conf. on Opt. Commun. (ECOC), 2013, paper Tu.3.C.1.
• T. Tanimura, S. Alreesh, J. K. Fischer, C. Schmidt-Langhorst, F. Frey, C. Meuer, R. Elschner, L. Molle, and C. Schubert
  Nonlinear Transmission of 6PolSK-QPSK Signals using Coded Modulation and Digital Back Propagation
  Opt. Fiber Commun. Conf. (OFC), 2013, paper OTu3B.3.

2012

• J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, C. Meuer, L. Molle, C. Schmidt-Langhorst, T. Tanimura, and C. Schubert
  Experimental Investigation of 126-Gb/s 6PolSK-QPSK signals
  Opt. Express, vol. 20, no. 26, pp. B232–7, Dec. 2012.
• R. Elschner, F. Frey, C. Meuer, J. K. Fischer, S. Alreesh, C. Schmidt-Langhorst, L. Molle, T. Tanimura, and C. Schubert
  Experimental Demonstration of a Format-Flexible Single Carrier Coherent Receiver using Data-Aided Digital Signal Processing
  38th European Conf. on Opt. Commun. (ECOC), 2012, vol. 20, no. 27, paper We.1.A.4.
• R. Elschner, F. Frey, C. Meuer, J. K. Fischer, S. Alreesh, L. Molle, T. Tanimura, and C. Schubert
  Experimental demonstration of a format-flexible single-carrier coherent receiver using data-aided digital signal processing
  Opt. Express, vol. 20, no. 27, pp. 28786–28791, 2012.

• J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, C. Meuer, L. Molle, T. Tanimura, and C. Schubert
  Experimental Investigation of 126-Gb/s 6PolSK-QPSK Signals
  38th European Conf. on Opt. Commun. (ECOC), 2012, vol. 2, no. 1, paper We.1.C.4.