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Preise & Auszeichnungen

Eingeladene Vorträge

Gesamte Liste der Veröffentlichungen

Eine komplette, aktuelle Liste der Veröffentlichungen finden Sie auch bei Google Scholar.

Zeitschriftenbeiträge

1. A. Buchberger, C. Häger, H. D. Pfister, L. Schmalen and A. Graell i Amat, "Pruning and quantizing neural belief propagation decoders," IEEE J. Sel. Areas Commun., vol. 39, no. 7, pp. 1957–1966, Jul. 2021, https://arxiv.org/abs/2011.13594
2. K. Gümüs, T. A. Eriksson, M. Takeoka, M. Fujiwara, M. Sasaki, L. Schmalen and A. Alvarado, "A novel error correction protocol for continuous variable quantum key distribution," Nature Scientific Reports, vol. 11, no. 10465, May. 2021
   [ Available here ]
3. L. Rapp and L. Schmalen, "Error-and-erasure decoding of product and staircase codes," IEEE Trans. Commun., 2021, https://arxiv.org/abs/2103.05716
4. S. Le, K. Schuh, F. Buchali, X. Du, M. Grözing, M. Berroth, L. Schmalen and H. Bülow, "Single Sideband Transmission Employing a 1-to-4 ADC Frontend and Parallel Digitization," J. Lightw. Technol., vol. 38, no. 12, pp. 3125–3134, Jun. 2020
5. A. Teixeira, D. Lavery, E. Ciaramella, L. Schmalen, N. Iiyama, R. Ferreira and S. Randel, "DSP Enabled Optical Detection Techniques for PON," J. Lightw. Technol., vol. 38, no. 3, pp. 684–695, Feb. 2020
6. S. Le, K. Schuh, R. Dischler, F. Buchali, L. Schmalen and H. Bülow, "Beyond 400 Gb/s Direct Detection Over 80 km for Data Center Interconnect Applications," J. Lightw. Technol., vol. 38, no. 2, pp. 538–545, Jan. 2020
7. A. Elkelesh, M. Ebada, S. Cammerer, L. Schmalen and S. ten Brink, "Decoder-in-the-Loop: Genetic Optimization-based LDPC Code Design," IEEE Access, pp. 141161–141170, Oct. 2019, https://arxiv.org/abs/1903.03128
8. B. Karanov, D. Lavery, P. Bayvel and L. Schmalen, "End-to-end optimized transmission over dispersive intensity-modulated channels using bidirectional recurrent neural networks," Optics Express, vol. 27, no. 14, pp. 19650–19663, Jul. 2019, https://arxiv.org/abs/1901.08570
9. A. Buchberger, A. i Amat, V. Aref and L. Schmalen, "Probabilistic eigenvalue shaping for nonlinear Fourier transform transmission," J. Lightw. Technol., vol. 36, no. 20, pp. 4799–4807, Oct. 2018, https://arxiv.org/abs/1712.08467
10. B. Karanov, M. Chagnon, F. Thouin, T. Eriksson, H. Bülow, D. Lavery, P. Bayvel and L. Schmalen, "End-to-end Deep Learning of Optical Fiber Communications," J. Lightw. Technol., vol. 36, no. 20, pp. 4843–4855, Oct. 2018, https://arxiv.org/abs/1804.04097
11. V. Aref, N. Rengaswamy and L. Schmalen, "Finite-length analysis of spatially-coupled regular LDPC ensembles on burst-erasure channels," IEEE Trans. Inf. Theory, vol. 64, no. 5, pp. 3431–3449, May. 2018, https://arxiv.org/abs/1611.08267
12. I. de Jauregui Ruiz, A. Ghazisaeidi, O. Sab, P. Plantady, A. Calsat, S. Dubost, L. Schmalen, V. Letellier and J. Renaudier, "25.4-Tb/s transmission over transpacific distances using truncated probabilistically shaped PDM-64QAM," J. Lightw. Technol., vol. 36, no. 6, pp. 1354–1361, Mar. 2018
13. H. Bülow, V. Aref and L. Schmalen, "Modulation on discrete nonlinear spectrum: Perturbation sensitivity and achievable rates," IEEE Photon. Technol. Lett., vol. 30, no. 5, pp. 423–426, Mar. 2018
14. J. Cho, X. Chen, S. Chandrasekhar, G. Raybon, R. Dar, L. Schmalen, E. Burrows, A. Adamiecki, S. Corteselli, Y. Pan, D. Correa, B. McKay, S. Zsigmond, P. Winzer and S. Grubb, "Trans-atlantic field trial using high spectral efficiency probabilistically shaped 64-QAM and single-carrier real-time 250-Gb/s 16-QAM," J. Lightw. Technol., vol. 36, no. 1, pp. 103–113, Jan. 2018
15. W. Lautenschlaeger, N. Benzaoui, F. Buchali, L. Dembeck, R. Dischler, B. Franz, U. Gebhard, J. Milbrandt, Y. Pointurier, D. Roesener, L. Schmalen and A. Leven, "Optical Ethernet—Flexible Optical Metro Networks," J. Lightw. Technol., vol. 35, no. 12, pp. 2346–2357, Jun. 2017
16. A. Ghazisaeidi, I. de Jauregui Ruiz, R. Rios-Müller, L. Schmalen, P. Tran, P. Brindel, A. Meseguer, Q. Hu, F. Buchali, G. Charlet and J. Renaudier, "Advanced C+L-band transoceanic transmission systems based on probabilistically shaped PDM-64QAM," J. Lightw. Technol., vol. 35, no. 7, pp. 1291–1299, Apr. 2017
17. W. Idler, F. Buchali, L. Schmalen, E. Lach, R. Braun, G. Böcherer, P. Schulte and F. Steiner, "Field trial of a 1 Tb/s super-channel network using probabilistically shaped constellations," J. Lightw. Technol., vol. 35, no. 8, pp. 1399–1406, Apr. 2017
18. L. Schmalen, A. Alvarado and R. Rios-Müller, "Performance prediction of nonbinary forward error correction in optical transmission experiments," J. Lightw. Technol., vol. 35, no. 4, pp. 1015–1027, Feb. 2017, https://arxiv.org/abs/1606.00755
19. F. Buchali, F. Steiner, G. Böcherer, L. Schmalen, P. Schulte and W. Idler, "Rate adaptation and reach increase by probabilistically shaped 64-QAM: An experimental demonstration," J. Lightw. Technol., vol. 34, no. 7, pp. 1599–1609, Apr. 2016
20. A. Ghazisaeidi, I. de Jauregui Ruiz, L. Schmalen, P. Tran, C. Simonneau, E. Awwad, B. Uscumlic, P. Brindel and G. Charlet, "Submarine transmission systems using digital nonlinear compensation and adaptive rate forward error correction," J. Lightw. Technol., vol. 34, no. 8, pp. 1886–1895, Apr. 2016
21. C. Pan, H. Bülow, W. Idler, L. Schmalen and F. Kschischang, "Optical Nonlinear Phase Noise Compensation for 9x32-Gbaud PolDM-16 QAM Transmission Using a Code-Aided Expectation-Maximization Algorithm," J. Lightw. Technol., vol. 33, no. 17, pp. 3679–3686, Sep. 2015
22. A. Ghazisaeidi, L. Schmalen, I. de Jauregui Ruiz, P. Tran, C. Simonneau, P. Brindel and G. Charlet, "Transoceanic transmission systems using adaptive multirate FECs," J. Lightw. Technol., vol. 33, no. 7, pp. 1479–1487, Apr. 2015
23. R. Rios-Müller, J. Renaudier, P. Brindel, A. Ghazisaeidi, I. Fernandez, P. Tran, C. Simonneau, L. Schmalen and G. Charlet, "Spectrally-efficient 400-Gb/s single carrier transport over 7 200 km," J. Lightw. Technol., vol. 33, no. 7, pp. 1402–1407, Apr. 2015
24. J. Renaudier, R. Rios-Müller, P. Tran, P. Schmalen and G. Charlet, "Spectrally efficient 1-Tb/s transceivers for long-haul optical systems," J. Lightw. Technol., vol. 33, no. 7, pp. 1452–1458, Apr. 2015
25. L. Schmalen, "A low-complexity LDPC coding scheme for channels with phase slips," J. Lightw. Technol., vol. 33, no. 7, pp. 1319–1325, Apr. 2015
26. L. Schmalen, V. Aref, J. Cho, D. Suikat, D. Rösener and A. Leven, "Spatially coupled soft-decision error correction for future lightwave systems," J. Lightw. Technol., vol. 33, no. 5, pp. 1109–1116, Mar. 2015
27. M. Beermann, E. Monzo, L. Schmalen and P. Vary, "GPU accelerated belief propagation decoding of non-binary LDPC codes with parallel and sequential scheduling," Journal of Signal Processing Systems, vol. 78, no. 1, pp. 21–34, Jan. 2015
28. A. Leven and L. Schmalen, "Status and recent advances on forward error correction technologies for lightwave systems," J. Lightw. Technol., vol. 32, no. 16, pp. 2735–2750, Aug. 2014
29. L. Schmalen, A. van Wijngaarden and S. ten Brink, "Forward error correction in optical core and optical access networks," Bell Labs Technical Journal, vol. 18, no. 3, pp. 39–66, Dec. 2013
30. L. Schmalen, F. Buchali, A. Leven and S. ten Brink, "A generic tool for assessing the soft-FEC performance in optical transmission experiments," IEEE Photon. Technol. Lett., vol. 24, no. 1, pp. 40–42, Jan. 2012
31. L. Schmalen and P. Vary, "Iterative source-channel decoding with reduced error floors," IEEE J. Sel. Topics Signal Process., vol. 5, no. 8, pp. 1577–1587, Dec. 2011
32. A. Leven, F. Vacondio, L. Schmalen, S. ten Brink and W. Idler, "Estimation of soft FEC performance in optical transmission experiments," IEEE Photon. Technol. Lett., vol. 23, no. 20, pp. 1547–1549, Oct. 2011
33. L. Schmalen, M. Adrat, T. Clevorn and P. Vary, "EXIT chart based system design for iterative source-channel decoding with fixed-length codes," IEEE Trans. Commun., vol. 59, no. 9, pp. 2406–2413, Sep. 2011
34. T. Clevorn, L. Schmalen, P. Vary and M. Adrat, "On redundant index assignments for iterative source-channel decoding," IEEE Commun. Lett., vol. 12, no. 7, pp. 514–516, Jul. 2008

Buchkapitel

1. A. Graell i Amat and L. Schmalen, "Forward error correction for optical transponders," in B. Mukherjee, I. Tomkos, M. Tornatore, P. Winzer and Y. Zhao (eds.), Handbook of Optical Networks, pp. 177–258, Springer, Oct. 2020
2. L. Schmalen, S. Brink and A. Leven, "Advances in detection and error correction for coherent optical communications: Regular, irregular, and spatially coupled LDPC code designs," in X. Zhou and C. Xie (eds.), Enabling Technologies for High Spectral Efficiency Coherent Optical Communication Networks, John Wiley & Sons, Inc., 2016, https://arxiv.org/abs/1704.04618
3. A. Leven and L. Schmalen, "Implementation aspects of coherent transmit and receive functions in application-specific integrated circuits," in I. Kaminow, T. Li and A. Willner (eds.), Optical Fiber Telecommunications VI-A, Academic Press, Jun. 2013
4. M. Adrat, T. Clevorn and L. Schmalen, "Iterative source-channel decoding & turbo decodulation," in R. Martin, U. Heute and C. Antweiler (eds.), Advances in Digital Speech Transmission, pp. 365–398, John Wiley & Sons, Ltd Chichester, UK, 2008

Konferenzbeiträge

1. E. M. Bansbach, V. Eliachevitch and L. Schmalen, "Deep reinforcement learning for wireless resource allocation using buffer state information," Proc. IEEE Global Commun. Conf. (GLOBECOM), Madrid, Spain, Dec. 2021, https://arxiv.org/abs/2108.12198
2. K. Gümüs and L. Schmalen, "Low rate protograph-based LDPC codes for continuous variable quantum key distribution," Proc. International Symposium on Wireless Communication Systems (ISWCS), Berlin, Germany, Sep. 2021, https://arxiv.org/abs/2107.06242
3. V. Lauinger, F. Buchali and L. Schmalen, "Blind equalization for coherent optical communications based on variational inference," Advanced Photonic Congress: Signal Processing in Photonic Communications (SPPCom), pp. SpTh1D.6, Jul. 2021
4. B. Karanov, L. Schmalen and A. Alvarado, "Distance-Agnostic Auto-Encoders for Short Reach Fiber Communications," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Tu5D.1, San Francisco, CA, USA, Jun. 2021
5. A. Buchberger, C. Häger, H. D. Pfister, L. Schmalen and A. Graell i Amat, "Learned decimation for neural belief propagation decoders," Proc. Int. Conf. Acoustics, Speech, and Signal Process. (ICASSP), Toronto, Canada, Jun. 2021, https://arxiv.org/abs/2011.02161
6. T. Eriksson, R. Luis, G. Rademacher, B. Puttnam, K. Gümüs, L. Schmalen, A. Alvarado, H. Furukawa, N. Wada, T. Hirano, M. Sasaki and M. Takeoka, "Challenges in coding, DSP and parallel operation of quantum key distribution and coherent data transmission," Proc. Eur. Conf. Opt. Commun. (ECOC), Brussels, Belgium, Dec. 2020
7. B. Karanov, V. Oliari, M. Chagnon, G. Liga, A. Alvarado, V. Aref, D. Lavery, P. Bayvel and L. Schmalen, "End-to-end learning in optical fiber communications: experimental demonstration and future trends," Proc. Eur. Conf. Opt. Commun. (ECOC), Brussels, Belgium, Dec. 2020
8. B. Karanov, P. Bayvel and L. Schmalen, "End-to-end learning in optical fiber communications: concept and transceiver design," Proc. Eur. Conf. Opt. Commun. (ECOC), Brussels, Belgium, Dec. 2020
9. B. Karanov, M. Chagnon, V. Aref, F. Ferreira, D. Lavery, P. Bayvel and L. Schmalen, "Experimental Investigation of Deep Learning for Digital Signal Processing in Short Reach Optical Fiber Communications," Proc. IEEE Workshop Signal Process. Syst. (SiPS), Coimbra, Portugal, Oct. 2020, https://arxiv.org/abs/2005.08790
10. B. Karanov, M. Chagnon, V. Aref, D. Lavery, P. Bayvel and L. Schmalen, "Optical Fiber Communication Systems Based on End-to-End Deep Learning," IEEE Photonics Conference (IPC), Vancouver, Canada, Sep. 2020, https://arxiv.org/abs/2005.08785
11. B. Karanov, M. Chagnon, V. Aref, D. Lavery, P. Bayvel and L. Schmalen, "Concept and experimental demonstration of optical IM/DD end-to-end system optimization using a generative model," Proc. Opt. Fiber Commun. Conf. (OFC), pp. 1–3, San Diego, CA, USA, Mar. 2020, https://arxiv.org/abs/1912.05146
12. A. Buchberger, C. Häger, H. Pfister, L. Schmalen and A. Graell i Amat, "Pruning Neural Belief Propagation Decoders," Proc. IEEE Int. Symp. Inform. Theory (ISIT), pp. 338–342, Los Angeles, CA, USA, 2020, https://arxiv.org/abs/2001.07464
13. B. Karanov, G. Liga, V. Aref, D. Lavery, P. Bayvel and L. Schmalen, "Deep learning for communication over dispersive nonlinear channels: performance and comparison with classical digital signal processing," Proc. Allerton Annu. Conf. Commun. Control Comp., pp. 192–199, Monticello, IL, USA, Nov. 2019, https://arxiv.org/abs/1910.01028
14. S. Le, K. Schuh, F. Buchali, X. Du, M. Grözing, M. Berroth, L. Schmalen and H. Bülow, "16x200 GBPS virtual carrier assisted DD transmission over 80 km with only 14 GHz of digitizer bandwidth," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–4, Dublin, Ireland, Sep. 2019
15. L. Schmalen and V. Aref, "Spatially Coupled LDPC Codes with Non-uniform Coupling for Improved Decoding Speed," Proc. IEEE Inform. Theory Workshop (ITW), pp. 1–5, Visby, Sweden, Aug. 2019, https://arxiv.org/abs/1904.07026
16. S. Le, K. Schuh, R. Dischler, F. Buchali, L. Schmalen and H. Bülow, "5x510 Gbps single-polarization direct-detection WDM transmission over 80 km of SSMF," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Tu2B–1, Mar. 2019
17. K. Klaiber, S. Cammerer, L. Schmalen and S. ten Brink, "Avoiding burst-like error patterns in windowed decoding of spatially coupled LDPC codes," Proc. Int. Symp. Turbo Codes and Iterative Inform. Process. (ISTC), pp. 1–5, Hong Kong, SAR China, Dec. 2018, https://arxiv.org/abs/1810.01137
18. L. Schmalen, "Performance Metrics for Communication Systems with Forward Error Correction," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Rome, Italy, Sep. 2018
19. M. Chagnon, B. Karanov and L. Schmalen, "Experimental demonstration of a dispersion tolerant end-to-end deep learning-based IM-DD transmission system," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Rome, Italy, Sep. 2018
20. M. Dia, V. Aref and L. Schmalen, "A compressed sensing approach for distribution matching," Proc. IEEE Int. Symp. Inform. Theory (ISIT), pp. 1266–1270, Vail, CO, USA, Jun. 2018, https://arxiv.org/abs/1804.00602
21. F. Buchali, Q. Hu, M. Chagnon, K. Schuh, L. Schmalen and S. Makovejs, "Flexible Transmission Enabled by Novel M2-QAM Formats with Record Distance-Spectral Efficiency Tuneability," Proc. Opt. Fiber Commun. Conf. (OFC), pp. W2A–54, San Diego, CA, USA, Mar. 2018
22. L. Schmalen, "Probabilistic constellation shaping: challenges and opportunities for forward error correction," Proc. Opt. Fiber Commun. Conf. (OFC), pp. 1–3, San Diego, CA, USA, Mar. 2018
23. T. Eriksson, M. Chagnon, F. Buchali, K. Schuh, S. ten Brink and L. Schmalen, "56 Gbaud probabilistically shaped PAM8 for data center interconnects," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Gothenburg, Sweden, Sep. 2017
24. F. Buchali, W. Idler, R. Dischler, T. Eriksson and L. Schmalen, "Spectrally efficient probabilistically shaped square 64QAM to 256 QAM," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Gothenburg, Sweden, Sep. 2017
25. Q. Hu, F. Buchali, L. Schmalen, W. Idler, R. Dischler, V. Aref and H. Bülow, "Inter-channel crosstalk compensation for time-frequency packing systems," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Gothenburg, Sweden, Sep. 2017
26. Q. Hu, R. Dischler, K. Schuh, H. Bülow, L. Schmalen and F. Buchali, "Beating Bandwidth Limitation for High-speed PAM-4 Transmission Based on Turbo Equalizer," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Gothenburg, Sweden, Sep. 2017
27. O. Sab, I. de Jauregui Ruiz, A. Ghazisaeidi, P. Plantady, A. Calsat, S. Dubost, L. Schmalen, J. Renaudier and V. Letellier, "Near capacity 24.6 Tb/s transmission over 10,285 km straight line testbed at 5.9 b/s/Hz spectral efficiency using TPCS-64QAM and C-Band EDFA-Only," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Gothenburg, Sweden, Sep. 2017
28. J. Cho, L. Schmalen and P. Winzer, "Normalized generalized mutual information as a forward error correction threshold for probabilistically shaped QAM," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Gothenburg, Sweden, Sep. 2017
29. L. Schmalen, T. Eriksson, F. Buchali, R. Dischler and U. Gebhard, "Distributed transmission and spatially coupled forward error correction in regenerative multipoint-to-point networks," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Gothenburg, Sweden, Sep. 2017
30. Q. Hu, F. Buchali, L. Schmalen and H. Bülow, "Experimental demonstration of probabilistically shaped QAM," Advanced Photonic Congress: Signal Processing in Photonic Communications (SPPCom), pp. SpM2F–6, New Orleans, LA, USA, Jul. 2017
31. A. Alvarado, G. Liga, T. Fehenberger and L. Schmalen, "On the design of coded modulation for fiber optical communications," Advanced Photonic Congress: Signal Processing in Photonic Communications (SPPCom), pp. SpM4F–2, New Orleans, LA, USA, Jul. 2017
32. L. Schmalen, V. Aref and F. Jardel, "Non-uniformly coupled LDPC codes: Better thresholds, smaller rate-loss, and less complexity," Proc. IEEE Int. Symp. Inform. Theory (ISIT), pp. 376–380, Aachen, Germany, Jun. 2017, https://arxiv.org/abs/1701.07629
33. T. Eriksson, F. Buchali, W. Idler, L. Schmalen and G. Charlet, "Electronically subcarrier multiplexed PM-32QAM with optimized FEC overheads," Proc. Opt. Fiber Commun. Conf. (OFC), pp. W3J–4, Los Angeles, CA, USA, Mar. 2017
34. Q. Hu, F. Buchali, L. Schmalen, W. Idler, R. Dischler, V. Aref and H. Bülow, "Transmit filter optimization for improved performance of time-frequency packing systems," Proc. Opt. Fiber Commun. Conf. (OFC), pp. 1–3, Los Angeles, CA, USA, Mar. 2017
35. L. Schmalen, L. Zhang and U. Gebhard, "Distributed rate-adaptive staircase codes for connectionless optical metro networks," Proc. Opt. Fiber Commun. Conf. (OFC), pp. W1J–2, Los Angeles, CA, USA, Mar. 2017
36. T. Eriksson, F. Buchali and L. Schmalen, "Nonlinear mitigation using probabilistically shaped real-valued modulation formats," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Th2A–61, Los Angeles, CA, USA, Mar. 2017
37. G. Charlet, A. Ghazisaeidi, R. Muller, J. Renaudier and L. Schmalen, "Signal processing for spectrally efficient systems," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Th4C–5, Los Angeles, CA, USA, Mar. 2017
38. K. Schuh, F. Buchali, W. Idler, T. Eriksson, L. Schmalen, W. Templ, L. Altenhain, U. Dümler, R. Schmid, M. Möller and K. Engenhardt, "Single carrier 1.2 Tbit/s transmission over 300 km with PM-64 QAM at 100 GBaud," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Th5B–5, Los Angeles, CA, USA, Mar. 2017
39. J. Cho, X. Chen, S. Chandrasekhar, G. Raybon, R. Dar, L. Schmalen, E. Burrows, A. Adamiecki, S. Corteselli, Y. Pan, D. Correa, B. McKay, S. Zsigmond, P. Winzer and S. Grubb, "Trans-atlantic field trial using probabilistically shaped 64-QAM at high spectral efficiencies and single-carrier real-time 250-Gb/s 16-QAM," Proc. Opt. Fiber Commun. Conf. (OFC), pp. 1–3, Los Angeles, CA, USA, Mar. 2017
40. F. Buchali, W. Idler, L. Schmalen and Q. Hu, "Flexible optical transmission close to the Shannon limit by probabilistically shaped QAM," Proc. Opt. Fiber Commun. Conf. (OFC), pp. M3C–3, Los Angeles, CA, USA, Mar. 2017
41. L. Zhang and L. Schmalen, "Feed-forward staircase codes," Proc. Int. ITG Conf. on Source and Channel Coding (SCC), pp. 1–6, Hamburg, Germany, Feb. 2017, https://arxiv.org/abs/1604.06574
42. R. Dischler, F. Buchali and L. Schmalen, "Embedded in-band DQPSK signaling within n-QAM data transmission," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
43. F. Buchali, W. Idler, L. Schmalen, G. Böcherer, P. Schulte and F. Steiner, "Probabilistically shaped QAM for independent reach, spectral efficiency and bit-rate adaptation," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
44. F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte and F. Steiner, "Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
45. V. Aref, N. Rengaswamy and L. Schmalen, "Spatially coupled LDPC codes affected by a single random burst of erasures," Proc. Int. Symp. Turbo Codes and Iterative Inform. Process. (ISTC), pp. 166–170, Brest, France, Sep. 2016, https://arxiv.org/abs/1607.00918
46. L. Schmalen and F. Buchali, "Implicit constellation shaping in regenerative optical networks," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
47. Q. Hu, F. Buchali, L. Schmalen, W. Idler, R. Dischler and H. Bülow, "Improved Flexibility in Rate and Reach by Time-Frequency Packed QPSK," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
48. S. Cammerer, L. Schmalen, V. Aref and S. ten Brink, "Wave-like decoding of tail-biting spatially coupled LDPC codes through iterative demapping," Proc. Int. Symp. Turbo Codes and Iterative Inform. Process. (ISTC), pp. 121–125, Brest, France, Sep. 2016, https://arxiv.org/abs/1704.05408
49. W. Idler, F. Buchali, L. Schmalen, E. Lach, R. Braun, G. Boecherer, P. Schulte and F. Steiner, "Field demonstration of 1 Tbit/s super-channel network using probabilistically shaped constellations," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
50. A. Ghazisaeidi, I. de Jauregui Ruiz, R. Rios-Muller, L. Schmalen, P. Tran, P. Brindel, A. Meseguer, Q. Hu, F. Buchali, G. Charlet and J. Renaudier, "65Tb/s transoceanic transmission using probabilistically-shaped PDM-64QAM," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
51. L. Schmalen, D. Suikat, V. Aref and D. Roesener, "On the design of capacity-approaching unit-memory spatially coupled LDPC codes for optical communications," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Düsseldorf, Germany, Sep. 2016
52. R. Rios-Müller, J. Renaudier, L. Schmalen and G. Charlet, "Practical approaches to 400G single-carrier submarine transmission," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Th1B–4, Anaheim, CA, USA, Mar. 2016
53. S. Cammerer, V. Aref, L. Schmalen and S. ten Brink, "Triggering wave-like convergence of tail-biting spatially coupled LDPC codes," Conf. Inform. Sciences Syst. (CISS), pp. 93–98, Princeton, NJ, USA, Mar. 2016, https://arxiv.org/abs/1507.01970
54. N. Rengaswamy, L. Schmalen and V. Aref, "On the burst erasure correctability of spatially coupled LDPC ensembles," Proc. Int. Zurich Seminar Commun. (ZSC), pp. 155–159, Zurich, Switzerland, Mar. 2016
55. L. Schmalen, A. Alvarado and R. Rios-Müller, "Predicting the performance of nonbinary forward error correction in optical transmission experiments," Proc. Opt. Fiber Commun. Conf. (OFC), pp. 1–3, Anaheim, CA, USA, 2016
56. L. Schmalen, V. Aref, D. Suikat and D. Rösener, "Next-generation forward error correction: Can we close the gap to the Shannon limit?," Asia Communications and Photonics Conference (ACP), pp. AS3D–4, Hong Kong, SAR China, Nov. 2015
57. L. Schmalen, "Novel forward error correction concepts for coherent optical communications," IEEE Photonics Conference (IPC), pp. 279–280, Reston, VA, USA, Oct. 2015
58. F. Buchali, L. Schmalen, Q. Hu and D. Che, "Low latency digital regenerator for dual polarization QAM signals," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Valencia, Spain, Sep. 2015
59. R. Rios-Müller, J. Renaudier, P. Brindel, P. Jenneve, H. Mardoyan, L. Schmalen and G. Charlet, "Experimental comparison between super-channel and sub-band single-carrier for 400 Gb/s and 800 Gb/s transport," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Valencia, Spain, Sep. 2015
60. A. Ghazisaeidi, L. Schmalen, P. Tran, C. Simonneau, E. Awwad, B. Uscumlic, P. Brindel and G. Charlet, "54.2 Tb/s transoceanic transmission using ultra low loss fiber, multi-rate FEC and digital nonlinear mitigation," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Valencia, Spain, Sep. 2015
61. F. Buchali, G. Böcherer, W. Idler, L. Schmalen, P. Schulte and F. Steiner, "Experimental demonstration of capacity increase and rate-adaptation by probabilistically shaped 64-QAM," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Valencia, Spain, Sep. 2015, https://arxiv.org/abs/1509.08836
62. L. Schmalen, D. Suikat, D. Rösener, V. Aref, A. Leven and S. ten Brink, "Spatially coupled codes and optical fiber communications: An ideal match?," Proc. IEEE Workshop Signal Process. Advances in Wireless Commun.(SPAWC), pp. 460–464, Stockholm, Sweden, Jun. 2015, https://arxiv.org/abs/1505.05405
63. J. Cho and L. Schmalen, "Construction of protographs for large-girth structured LDPC convolutional codes," Proc. IEEE Int. Conf. Commun. (ICC), pp. 4412–4417, London, UK, Jun. 2015
64. F. Buchali, W. Idler, L. Schmalen and K. Schuh, "Performance and advantages of 100 Gb/s QPSK/8QAM hybrid modulation formats," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Th2A–16, Los Angeles, CA, USA, Mar. 2015
65. L. Schmalen, S. ten Brink and A. Leven, "Spatially-coupled LDPC protograph codes for universal phase slip-tolerant differential decoding," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Th3E–6, Los Angeles, CA, USA, Mar. 2015
66. R. Rios-Müller, J. Renaudier, P. Brindel, H. Mardoyan, P. Jenneve, L. Schmalen and G. Charlet, "1-Terabit/s net data-rate transceiver based on single-carrier Nyquist-shaped 124 GBaud PDM-32QAM," Proc. Opt. Fiber Commun. Conf. (OFC), pp. Th5B–1, Los Angeles, CA, USA, Mar. 2015
67. H. Mardoyan, R. Rios-Müller, M. Mestre, P. Jenneve, L. Schmalen, A. Ghazisaeidi, P. Tran, S. Bigo and J. Renaudier, "Transmission of single-carrier Nyquist-shaped 1-Tb/s line-rate signal over 3,000 km," Proc. Opt. Fiber Commun. Conf. (OFC), pp. W3G–2, Los Angeles, CA, USA, Mar. 2015
68. R. Rios-Müller, J. Renaudier, L. Schmalen and G. Charlet, "Joint coding rate and modulation format optimization for 8QAM constellations using BICM mutual information," Proc. Opt. Fiber Commun. Conf. (OFC), pp. W3K–4, Los Angeles, CA, USA, Mar. 2015
69. W. Idler, F. Buchali, L. Schmalen, K. Schuh and H. Bülow, "Hybrid modulation formats outperforming 16QAM and 8QAM in transmission distance and filtering with cascaded WSS," Proc. Opt. Fiber Commun. Conf. (OFC), pp. 1–3, Los Angeles, CA, USA, Mar. 2015
70. J. Renaudier, R. Rios-Müller, L. Schmalen and G. Charlet, "Spectrally efficient 1Tb/s transceivers," Proc. Opt. Fiber Commun. Conf. (OFC), pp. M2G–3, Los Angeles, CA, USA, Mar. 2015
71. R. Rios-Müller, J. Renaudier, P. Brindel, C. Simonneau, P. Tran, A. Ghazisaeidi, I. Fernandez, L. Schmalen and G. Charlet, "Optimized spectrally efficient transceiver for 400-Gb/s single carrier transport," Proc. Eur. Conf. Opt. Commun. (ECOC), Cannes, France, Sep. 2014
72. F. Buchali, L. Schmalen, K. Schuh and W. Idler, "Optimization of time-division hybrid-modulation and its application to rate adaptive 200Gb transmission," Proc. Eur. Conf. Opt. Commun. (ECOC), Cannes, France, Sep. 2014
73. L. Schmalen, "Low-complexity phase slip tolerant LDPC-based FEC scheme," Proc. Eur. Conf. Opt. Commun. (ECOC), Cannes, France, Sep. 2014
74. L. Schmalen, D. Suikat, D. Rösener and A. Leven, "Evaluation of left-terminated spatially coupled LDPC codes for optical communications," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, Cannes, France, Sep. 2014
75. C. Müller, A. Leven, H. Bülow, L. Schmalen, G. Leuchs and C. Marquardt, "M-ary phase shift keying receiver beating the standard quantum limit for any signal power," Proc. Eur. Conf. Opt. Commun. (ECOC), Cannes, France, Sep. 2014
76. A. Ghazisaeidi, L. Schmalen, I. de Jauregui, P. Tran, C. Simonneau, P. Brindel and G. Charlet, "52.9 Tb/s transmission over transoceanic distances using adaptive multi-rate FEC," Proc. Eur. Conf. Opt. Commun. (ECOC), Cannes, France, Sep. 2014
77. J. Renaudier, R. Müller, L. Schmalen, P. Tran, P. Brindel and G. Charlet, "1-Tb/s PDM-32QAM superchannel transmission at 6.7-b/s/Hz over SSMF and 150-GHz-grid ROADMs," Proc. Eur. Conf. Opt. Commun. (ECOC), Cannes, France, Sep. 2014
78. L. Schmalen, V. Aref, J. Cho and K. Mahdaviani, "Next generation error correcting codes for lightwave systems," Proc. Eur. Conf. Opt. Commun. (ECOC), Cannes, France, Sep. 2014
79. L. Schmalen and K. Mahdaviani, "Laterally connected spatially coupled code chains for transmission over unstable parallel channels," Proc. Int. Symp. Turbo Codes and Iterative Inform. Process. (ISTC), pp. 77–81, Bremen, Germany, Aug. 2014
80. H. Bülow, X. Lu, L. Schmalen, A. Klekamp and F. Buchali, "Experimental performance of 4D optimized constellation alternatives for PM-8QAM and PM-16QAM," Proc. Opt. Fiber Commun. Conf. (OFC), pp. M2A–6, San Francisco, CA, USA, Mar. 2014
81. L. Schmalen, "Energy efficient FEC for optical transmission systems," Proc. Opt. Fiber Commun. Conf. (OFC), pp. M3A–1, San Francisco, CA, USA, Mar. 2014
82. F. Buchali, L. Schmalen, A. Klekamp, K. Schuh and A. Leven, "5x50 Gb/s WDM Transmission of 32 Gbaud DP-3-PSK over 36, 000 km Fiber with Spatially Coupled LDPC Coding," Proc. Opt. Fiber Commun. Conf. (OFC), pp. W1A–1, San Francisco, CA, USA, Mar. 2014
83. F. Buchali, A. Klekamp, L. Schmalen and T. Drenski, "Implementation of 64QAM at 42.66 GBaud using 1.5 samples per symbol DAC and demonstration of up to 300 km fiber transmission," Proc. Opt. Fiber Commun. Conf. (OFC), pp. M2A–1, Mar. 2014
84. H. Bülow, X. Lu and L. Schmalen, "Experimental analysis of transmission and soft decoding of optimized 4D constellations," Asia Communications and Photonics Conference (ACP), pp. AF4C–1, Beijing, China, Nov. 2013
85. M. Beermann, E. Monzo, L. Schmalen and P. Vary, "High speed decoding of non-binary irregular LDPC codes using GPUs," Proc. IEEE Workshop Signal Process. Syst. (SiPS), pp. 36–41, Taipei, Taiwan, Oct. 2013
86. V. Aref, L. Schmalen and S. ten Brink, "On the convergence speed of spatially coupled LDPC ensembles," Proc. Allerton Annu. Conf. Commun. Control Comp., pp. 342–349, Monticello, IL, USA, Oct. 2013, Full proofs available at https://arxiv.org/abs/1307.3780
87. H. Bülow, X. Lu and L. Schmalen, "Experimental Analysis of Single Carrier POLQAM (6Pol-QPSK) Transmission with Soft-Decoding," Proc. Eur. Conf. Opt. Commun. (ECOC), London, UK, Sep. 2013
88. R. Dischler and L. Schmalen, "Transmission of a 1.1 Tb/s super channel in 100 GHz optical bandwidth based on PM-256 QAM and spatially coupled FEC," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, London, UK, Sep. 2013
89. M. Salsi, R. Rios-Müller, J. Renaudier, P. Tran, L. Schmalen, A. Ghazisaeidi, H. Mardoyan, P. Brindel, G. Charlet and S. Bigo, "38.75 Tb/s transmission experiment over transoceanic distance," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, London, UK, Sep. 2013
90. J. Renaudier, R. Rios-Muller, L. Schmalen, M. Salsi, P. Tran, G. Charlet and S. Bigo, "1-Tb/s transceiver spanning over just three 50-GHz frequency slots for long-haul systems," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, London, UK, Sep. 2013
91. H. Bülow, X. Lu and L. Schmalen, "Experimental analysis of single carrier POLQAM (6Pol-QPSK) transmission with soft-decoding," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. 1–3, London, UK, Sep. 2013
92. M. Salsi, A. Ghazisaeidi, P. Tran, R. Muller, L. Schmalen, J. Renaudier, H. Mardoyan, P. Brindel, G. Charlet and S. Bigo, "31 Tb/s transmission over 7,200 km using 46 Gbaud PDM-8QAM with optimized error correcting code rate," Proc. Opto-Electron. Commun. Conf. (OECC), pp. PD3-5, Kyoto, Japan, Jun. 2013
93. F. Buchali, K. Schuh, L. Schmalen, W. Idler, E. Lach and A. Leven, "1-Tbit/s dual-carrier DP 64QAM transmission at 64Gbaud with 40\% overhead soft-FEC over 320km SSMF," Proc. Opt. Fiber Commun. Conf. (OFC), pp. OTh4E–3, Anaheim, CA, USA, Mar. 2013
94. L. Schmalen and S. ten Brink, "Combining spatially coupled LDPC codes with modulation and detection," Proc. Int. ITG Conf. on Systems, Communications and Channel Coding (SCC), pp. 1–6, Munich, Germany, Jan. 2013
95. L. Schmalen, M. Adrat, T. Clevorn and P. Vary, "Windowed iterative source-channel decoding with delay constraints," Proc. Int. Symp. Turbo Codes and Iterative Inform. Process. (ISTC), pp. 16–20, Gothenburg, Sweden, Aug. 2012
96. L. Schmalen, S. ten Brink and A. Leven, "Analysis and optimization of iteration schedules for LDPC coded modulation and detection," Proc. Int. Symp. Turbo Codes and Iterative Inform. Process. (ISTC), pp. 210–214, Gothenburg, Sweden, Aug. 2012
97. L. Schmalen, S. ten Brink, G. Lechner and A. Leven, "On threshold prediction of low-density parity-check codes with structure," Conf. Inform. Sciences Syst. (CISS), pp. 1–5, Princeton, NJ, USA, Mar. 2012
98. L. Schmalen and R. Dischler, "Experimental evaluation of coded modulation for a coherent PDM system with high spectral efficiency," Proc. Opt. Fiber Commun. Conf. (OFC), pp. 1–3, Los Angeles, CA, USA, Mar. 2012
99. S. ten Brink, A. Leven and L. Schmalen, "FEC and soft decision: Concept and directions," Proc. Opt. Fiber Commun. Conf. (OFC), pp. OW1H–5, Los Angeles, CA, USA, Mar. 2012
100. F. Buchali, K. Schuh, D. Rösener, E. Lach, R. Dischler, W. Idler, L. Schmalen, A. Leven, R. Braun, A. Ehrhardt, C. Gerlach and L. Schürer, "512-Gb/s DP-16-QAM field trial over 734 km installed SSMF with co-propagating 10 Gb/s NRZ neighbors incorporating soft-FEC decoding," Proc. Opt. Fiber Commun. Conf. (OFC), pp. OW4C–4, Los Angeles, CA, USA, Mar. 2012
101. Y. Chen, L. Schmalen, H. Bülow, A. Leven and S. Ten Brink, "Space-time coding schemes for optical MIMO," Proc. Eur. Conf. Opt. Commun. (ECOC), pp. Tu–6, Geneva, Switzerland, Sep. 2011
102. L. Schmalen, M. Tschauner, T. Breddermann and P. Vary, "Novel iterative multiple description coding for correlated sources," Proc. Eur. Signal Process. Conf. (EUSIPCO), pp. 2094–2098, Barcelona, Spain, Aug. 2011
103. M. Beermann, L. Schmalen and P. Vary, "Improved decoding of binary and non-binary LDPC codes by probabilistic shuffled belief propagation," Proc. IEEE Int. Conf. Commun. (ICC), pp. 1–5, Kyoto, Japan, Jun. 2011
104. L. Schmalen and P. Vary, "Reconstruction of Multiple Descriptions by MMSE Estimation," Proc. ITG Conf. Speech Communication, Bochum, Germany, Oct. 2010
105. L. Schmalen, P. Vary, T. Clevorn and M. Adrat, "Turbo source compression with jointly optimized inner irregular and outer irregular codes," Proc. IEEE Vehicular Technology Conf. (VTC-Fall), pp. 1–5, Ottawa, Canada, Sep. 2010
106. M. Adrat, M. Antweiler, L. Schmalen, P. Vary and T. Clevorn, "On the overshooting effect in EXIT charts of iterative source-channel decoding," Proc. IEEE Int. Conf. Commun. (ICC), pp. 1–5, Cape Town, South Africa, May. 2010
107. T. Clevorn, L. Schmalen, P. Vary and M. Adrat, "Hybrid ARQ with Incremental Redundant Index Assignments for Iterative Source-Channel Decoding," Proc. IEEE Int. Conf. Commun. (ICC), pp. 1–5, Cape Town, South Africa, May. 2010
108. L. Schmalen and P. Vary, "Error resilient turbo compression of source codec parameters using inner irregular codes," Proc. Int. ITG Conf. on Source and Channel Coding (SCC), pp. 1–6, Siegen, Germany, Jan. 2010
109. L. Schmalen, T. Schlien and P. Vary, "The flexcode source-channel coding approach for audio and speech transmission," Proc. Int. ITG Conf. on Source and Channel Coding (SCC), pp. 1–6, Siegen, Germany, Jan. 2010
110. H. Lüders, B. Eschbach, L. Schmalen and P. Vary, "OFDM Turbo DeCodulation with exit optimized bit loading and signal constellations," Proc. Int. Conf. Acoustics, Speech, and Signal Process. (ICASSP), pp. 2589–2592, Taipei, Taiwan, Apr. 2009
111. L. Schmalen and P. Vary, "Near-lossless compression and protection by turbo source-channel (de-) coding using irregular index assignments," Proc. Int. Conf. Acoustics, Speech, and Signal Process. (ICASSP), pp. 2485–2488, Taipei, Taiwan, Apr. 2009
112. L. Schmalen, P. Vary and M. Adrat, "Reduced-Search Source Decoders for Iterative Source-Channel Decoding," Proc. ITG Conf. Speech Communication, pp. 1–4, Aachen, Germany, Oct. 2008
113. T. Clevorn, L. Schmalen, P. Vary and M. Adrat, "Iterative Source-Channel Decoding: Design of Redundant Index Assignments," Proc. ITG Conf. Speech Communication, pp. 1–4, Aachen, Germany, Oct. 2008
114. L. Schmalen, B. Schotsch, M. Jeub, P. Vary and T. Clevorn, "The FlexCode Channel Coding Approach," Proc. ITG Conf. Speech Communication, pp. 1–4, Aachen, Germany, Oct. 2008
115. L. Schmalen, P. Vary, M. Adrat and T. Clevorn, "Complexity-reduced iterative source-channel decoding by conditional quantization," Proc. Int. Symp. Turbo Codes and Iterative Inform. Process. (ISTC), pp. 327–332, Lausanne, Switzerland, Sep. 2008
116. R. Thobaben, L. Schmalen and P. Vary, "Joint source-channel coding with inner irregular codes," Proc. IEEE Int. Symp. Inform. Theory (ISIT), pp. 1153–1157, Toronto, Canada, Jul. 2008
117. B. Schotsch, L. Schmalen, P. Vary and T. Clevorn, "Graph-Based Turbo DeCodulation with LDPC Codes," Proc. IEEE Vehicular Technology Conf. (VTC-Spring), pp. 772–776, Singapore, May. 2008
118. L. Schmalen, P. Vary, T. Clevorn and B. Schotsch, "Efficient iterative source-channel decoding using irregular index assignments," Proc. Int. ITG Conf. on Source and Channel Coding (SCC), pp. 1–6, Ulm, Germany, Jan. 2008
119. H. Lüders, L. Schmalen and P. Vary, "Approximating EXIT Characteristics of Soft Demodulators in OFDM BICM-ID Systems for Time Variant Frequency Selective Fading Channels," Proc. Int. ITG Conf. on Source and Channel Coding (SCC), pp. 1–6, Ulm, Germany, Jan. 2008
120. L. Schmalen, P. Vary, M. Adrat and T. Clevorn, "On the EXIT Characteristics of Feed Forward Convolutional Codes," Proc. IEEE Int. Symp. Inform. Theory (ISIT), pp. 2686–2690, Nice, France, Jun. 2007
121. L. Schmalen, T. Clevorn and P. Vary, "Iterative source-coded equalization: turbo error concealment for ISI channels," Proc. IEEE Workshop Signal Process. Advances in Wireless Commun.(SPAWC), pp. 1–5, Helsinki, Finland, Jun. 2007
122. T. Clevorn, L. Schmalen, P. Vary and M. Adrat, "On the optimum performance theoretically attainable for scalarly quantized correlated sources," Proc. Int. Symp. Inform. Theory Appl.(ISITA), Seoul, South Korea, Oct. 2006
123. T. Clevorn, B. Schotsch, L. Schmalen, P. Vary and M. Adrat, "Separation of recursive convolutional codes into sub-codes using Galois field arithmetic," Conf. Inform. Sciences Syst. (CISS), pp. 245–245, Princeton, NJ, USA, Mar. 2006
124. L. Schmalen and M. Adrat, "An Iterative, Turbo-like Approach to Convolutional Decoding," 9th International Student Conference on Electrical Engineering (POSTER 2005), Prague, Czech Republic, May. 2005

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