Picture of Vahid Aref

Vahid Aref

Stuttgart, Germany
IP Transport Researcher

Education

  • École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
    • Ph.D. in Computer and Communication Sciences, March 2014.
    • Thesis : Spatially Coupled Codes for Channel and Source Coding
  • Sharif University of Technology, Iran
    • M.S. in Electrical Engineering, Communication Systems, 2008.
    • Thesis:  New Achievable Rates in Frequency Hopping Spread Spectrum Systems
    • B.Sc. in Electrical Engineering, Communications, 2006.

Biography

 Vahid Aref is a member of technical staff in IP and Optical Networks research lab, Nokia Bell Labs. Dr. Aref earned his B.Sc. and M.Sc. in electrical engineering from Sharif University of Technology, Iran, in 2006 and 2008. He received his PhD degree in computer and communication sciences from École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, in March 2014.

Before Joining Bell Labs, he was a research assistant in the communication theory laboratory (LTHC), EPFL, from 2010 till 2014. In collaboration with Bell Labs, he conducted post-doctoral research in the institute of telecommunications (INÜ) at University of Stuttgart in 2014. Since 2016, Dr. Aref also serves as guest lecturer at the University of Stuttgart.

Vahid's fields of research include coding and information theory, optical communications and nonlinearity mitigation techniques.

Selected Articles and Publications

Non-Uniform Spatial Coupling for Windowed Decoding of Spatially Coupled LDPC Codes

  •  Son T. Le,  Vahid Aref, and Henning Buelow," Nonlinear Signal Multiplexing for Communication beyond the Kerr Nonlinearity Limit", Nature Photonics ,2017, DIO:10.1038/nphoton.2017.118
  •  Henning Buelow, Son T. Le, and Vahid Aref," Modulation of the Nonlinear Spectrum in Experiment," in Proc. Signal Processing in Photonic Communications (SPPCOM 2017), July 2017.
  • Laurent Schmalen, Vahid Aref, and Fanny Jardel," Non-Uniformly Coupled LDPC Codes: Better Thresholds, Smaller Rate-loss, and Less Complexity," In Proc. International Symposium on Information Theory (ISIT) 2017, June 2017.
  • Alexander Span, Vahid Aref, Henning Buelow, and Stephan ten Brink," On Time-Bandwidth Product of Multi-soliton Pulses,"  In Proc. International Symposium on Information Theory (ISIT) 2017, June 2017.
  • Son T. Le, Henning Buelow, and Vahid Aref," Demonstration of 64x0.5Gbaud Nonlinear Frequency Division Multiplexed Transmission with 32QAM," in Proc. Optical Fiber Communication Conference, W3J.1, March 2017
  • Q. Hu, F. Buchali, L. Schmalen, W. Idler, R. Dischler, V. Aref, H. Buelow," Transmit Filter Optimization for Improved Performance of Time-Frequency PackingSystem," in Proc. Optical Fiber Communication Conference, Tu3D. 5, March 2017.
  • Vahid Aref, Zhenhua Dong, and Henning Buelow," Design Aspects of Multi-Soliton Pulses for Optical Fiber Transmission," (invited) in Proc. IEEE Photonics Conference, Oct. 2016
     
  • Vahid Aref, Son T. Le, and Henning Buelow, " Demonstration of Fully Nonlinear Spectrum Modulated System in the Highly Nonlinear Optical Transmission Regime," Post-deadline Paper, in Proc. European Conference on Optical Communication (ECOC), Sept. 2016.
  • Henning Buelow, Vahid Aref, and Wilfried Idler," Transmission of Waveforms Determined by 7 Eigenvalues with PSK-Modulated Spectral Amplitudes," in Proc.  European Conference on Optical Communication (ECOC), Sept. 2016.
     
  • Vahid Aref, Henning Buelow," Design of 2-Soliton Spectral Phase Modulated Pulses Over Lumped Amplified Link," in Proc. European Conference on Optical Communication (ECOC), Sept. 2016.
     
  • Laurent Schmalen, Detlef Suikat, Vahid Aref, and Detlef Rösener, "On the Design of Capacity-Approaching Unit-Memory Spatially Coupled LDPC Codes for Optical Communications," in Proc European Conference on Optical Communication (ECOC), Sept. 2016.
     
  • Sebastian Cammerer, Laurent Schmalen, Vahid Aref, and Stephan ten Brink, "Wave-like Decoding of Tail-biting Spatially Coupled LDPC Codes Through Iterative Demapping," in Proc. 9th international symposium on Turbo Coding & Iterative Information Processing 2016, Sept. 2016.
     
  • Vahid Aref, Narayanan Rengaswamy, and Laurent Schmalen," Spatially Coupled LDPC Codes Affected by a Single Random Burst of Erasures," in Proc. 9th international symposium on Turbo Coding & Iterative Information Processing 2016, Sept. 2016.
  • Sebastian Cammerer, Vahid Aref, Laurent Schmalen, and Stephan ten Brink, " Triggering Wave-Like Convergence of Tail-biting Spatially Coupled LDPC Codes," In Proc. 2016 Annual Conference on Information Science and Systems (CISS), March 2016. 
     
  • Vahid Aref, Henning Buelow, and Karsten Schuh, " On Spectral Phase Estimation of Noisy Solitonic Transmission," In Proc. Optical Fiber Communication Conference and Exhibition (OFC) 2016, W3A.3, March 2016.
     
  • Henning Buelow, Vahid Aref, Karsten Schuh, and Wilfried Idler," Experimental Nonlinear Frequency Domain Equalization of QPSK Modulated 2-Eigenvalues Soliton," (invited) In Proc. Optical Fiber Communication Conference and Exhibition (OFC) 2016, March 2016.
     
  • Karsten Schuh, Vahid Aref, and Henning Buelow," Collision of QPSK Modulated Solitons," In Proc.  Optical Fiber Communication Conference and Exhibition (OFC) 2016, W2A.33, March 2016.
     
  • Narayanan Rengaswamy, Laurent Schmalen, and Vahid Aref," On the Burst Erasure Correctability of Spatially Coupled LDPC Ensembles," In Proc. 2016 International Zurich Seminar on Communications, March 2016.
     
  • Laurent Schmalen, Detlef Suikat, Detlef Rösener, Vahid Aref, Andreas Leven, and Stephan ten Brink," Spatially Coupled Codes and Optical Fiber Communications: An Ideal Match?, in Proc. Asia Communications and Photonics Conference (ACP), Hong Kong, Nov. 2015.
     
  • Vahid Aref, Henning Buelow, Karsten Schuh, and Wilfried Idler, " Experimental Demonstration of Nonlinear Frequency Division Multiplexed Transmission," in Proc. European Conference on Optical Communication (ECOC), 2015.
     
  • Henning Buelow, Vahid Aref, Karsten Schuh, and Wilfried Idler," Practical Implementation of Nonlinear Fourier Transform Based Optical Nonlinearity Mitigation," in Proc. European Conference on Optical Communication (ECOC), 2015.
     
  • Vahid Aref," Rateless codes from spatially coupled regular-LT codes," (invited) in Communication and Information Theory (IWCIT), 2015 Iran Workshop on, 2015.
     
  • Laurent Schmalen, Vahid Aref, Junho Cho, Detlef Suikat, Detlef Rösener, and Andreas Leven. "Spatially coupled soft-decision error correction for future lightwave systems." Journal of Lightwave Technology 33, no. 5 (2015): 1109-1116.
     
  • Vahid Aref, Nicolas Macris, and Marc Vuffray," Approaching the Rate-Distortion Limit with Spatial Coupling, Belief propagation and Decimation,  in IEEE Transactions on  Information Theory, vol.61, no.7, pp.3954-3979, 2015.
     
  • Laurent Schmalen, Vahid Aref, Junho Cho, and Kaveh Mahdaviani. "Next generation error correcting codes for lightwave systems." In Optical Communication (ECOC), 2014 European Conference on, pp. 1-3. IEEE, 2014.
     
  • V. Aref, L. Schmalen, and S. ten Brink," On the Convergence Speed of Spatially Coupled LDPC Ensembles," 51st Annual Allerton Conference on Communication, Control, and Computing, 2013.
     
  • V. Aref, N. Macris, and M. Vuffray," Approaching the Rate-Distortion Limit by spatial Coupling with Belief Propagation and Decimation," in proc. IEEE International Symposium on Information Theory (ISIT), 2013.
     
  • V. Aref, N. Macris, R. Urbanke, and M. Vuffray," Lossy Source Coding via Spatially Coupled LDGM Ensembles," in proc. International Symposium on Information Theory (ISIT), 2012, pp. 373–377.
     
  • V. Aref, and R. Urbanke, Universal Rateless Codes from Coupled LT Codes, in proc. Information Theory Workshop (ITW), 2011, pp. 277 –281.
     
  • K. Alishahi, F. Marvasti, V. Aref, and P. Pad," Bounds on the Sum Capacity of Synchronous Binary CDMA Channels," IEEE Transactions on Information Theory, vol. 55, no. 8, pp. 3577–3593, 2009.
     
  • M. Nilchian, V. Aref, and M. R. Aref," Partial Cognitive Relay Channel," in proc. IEEE Information Theory Workshop (ITW), 2009, pp. 341–345.

Contact

Email

vahid.aref@nokia-bell-labs.com

Phone

0049 711 821 44159