Han–Kobayashi and Dirty-Paper Coding for Superchannel Optical Communications

Superchannel transmission is a candidate to realize Tb/s-class high-speed optical communications. In order to achieve higher spectrum efficiency, the channel spacing shall be as narrow as possible. However, densely allocated channels can cause non-negligible inter-channel interference (ICI) especially when the channel spacing is close to or below the Nyquist bandwidth. In this paper, we consider joint decoding to cancel the ICI in dense superchannel transmission. To further improve the spectrum efficiency, we propose the use of Han-Kobayashi superposition coding. In addition, for the case when neighboring subchannel transmitters can share data, we introduce dirty-paper coding for pre-cancelation of the ICI. We analytically evaluate the potential gains of these methods when ICI is present for sub-Nyquist channel spacing.

[1]  P. Poggiolini.  The GN Model of Non-Linear Propagation in Uncompensated Coherent Optical Systems , 2012, Journal of Lightwave Technology.

[2]  Giulio Colavolpe.  Faster-than-Nyquist and beyond: how to improve spectral efficiency by accepting interference , 2011 .

[3]  Nihar Jindal,et al.  On achievable rates of the two-user symmetric Gaussian interference channel , 2010, 2010 48th Annual Allerton Conference on Communication, Control, and Computing (Allerton).

[4]  Fredrik Rusek,et al.  Constrained Capacities for Faster-Than-Nyquist Signaling , 2009, IEEE Transactions on Information Theory.

[5]  S. Qureshi,et al.  Adaptive equalization , 1982, Proceedings of the IEEE.

[6]  Andrew C. Singer,et al.  Turbo equalization: principles and new results , 2002, IEEE Trans. Commun..

[7]  Peter J. Winzer,et al.  1.5-Tb/s Guard-Banded Superchannel Transmission over 56× 100-km (5600-km) ULAF Using 30-Gbaud Pilot-Free OFDM-16QAM Signals with 5.75-b/s/Hz Net Spectral Efficiency , 2012 .

[8]  Gabriella Bosco,et al.  EGN model of non-linear fiber propagation. , 2014, Optics express.

[9]  Suhas N. Diggavi,et al.  On the Maximum Achievable Sum-Rate With Successive Decoding in Interference Channels , 2012, IEEE Transactions on Information Theory.

[10]  Toshiaki Koike-Akino,et al.  Maximizing transmission capacity of superchannels using rate-adaptive FEC , 2014, 2014 The European Conference on Optical Communication (ECOC).

[11]  Bengt-Erik Olsson,et al.  RF-assisted optical dual-carrier 112 Gbit/s polarization-multiplexed 16-QAM transmitter , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[12]  G. Agrawal.  Fiber‐Optic Communication Systems , 2021 .

[13]  G. Agrawal.  Fiber-Optic Communication Systems: Agrawal/Fiber-Optic , 2010 .

[14]  J. Renaudier,et al.  1-Tb/s PDM-32QAM superchannel transmission at 6.7-b/s/Hz over SSMF and 150-GHz-grid ROADMs , 2014, 2014 The European Conference on Optical Communication (ECOC).

[15]  Thomas M. Cover,et al.  Elements of Information Theory , 2005 .

[16]  Jian Hong Ke,et al.  400 Gbit/s single-carrier and 1 Tbit/s three-carrier superchannel signals using dual polarization 16-QAM with look-up table correction and optical pulse shaping. , 2014, Optics express.

[17]  Te Sun Han,et al.  A new achievable rate region for the interference channel , 1981, IEEE Trans. Inf. Theory.

[18]  H. de Waardt,et al.  Transmission of 448-Gb/s dual-carrier POLMUX-16QAM over 1230 km with 5 flexi-grid ROADM passes , 2012, OFC/NFOEC.

[19]  Takeshi Hoshida,et al.  Systematic analysis of intra-superchannel nonlinear crosstalk in flexible grid networks , 2014, 2014 The European Conference on Optical Communication (ECOC).

[20]  Toshiaki Koike-Akino,et al.  Interference management with Han-Kobayashi coding: Dual-carrier coherent optical communications , 2014, 2014 The European Conference on Optical Communication (ECOC).

[21]  Sun Hyok Chang,et al.  Dual-carrier DQPSK based 112 Gb/s signal transmission over 480 km of SMF link carrying 10 Gb/s NRZ channels , 2012 .

[22]  Gregory W. Wornell,et al.  Approaching the matched-filter bound using iterated-decision equalization with frequency-interleaved encoding , 2002, Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE.

[23]  Akira Naka,et al.  Super high density multi-carrier transmission system by MIMO processing , 2014, 2014 The European Conference on Optical Communication (ECOC).

[24]  Peter A. Andrekson,et al.  1.94Tb/s (11×176Gb/s) DP-16QAM superchannel transmission over 640km EDFA-only SSMF and two 280GHz WSSs , 2012, 2012 38th European Conference and Exhibition on Optical Communications.

[25]  Hua Wang,et al.  Gaussian Interference Channel Capacity to Within One Bit , 2007, IEEE Transactions on Information Theory.

[26]  J. E. Mazo,et al.  Faster than Nyquist Signaling: Algorithms to Silicon , 2014 .

[27]  A. Bononi,et al.  The impact of the modulation dependent nonlinear interference missed by the Gaussian noise model , 2014, 2014 The European Conference on Optical Communication (ECOC).

[28]  Stephan ten Brink,et al.  A close-to-capacity dirty paper coding scheme , 2004, ISIT.

[29]  P. Serena,et al.  An Alternative Approach to the Gaussian Noise Model and its System Implications , 2013, Journal of Lightwave Technology.

[30]  Max H. M. Costa,et al.  Writing on dirty paper , 1983, IEEE Trans. Inf. Theory.

[31]  Zixiang Xiong,et al.  Near-Capacity Dirty-Paper Code Design: A Source-Channel Coding Approach , 2009, IEEE Transactions on Information Theory.

[32]  Giuseppe Durisi,et al.  Capacity of a Nonlinear Optical Channel With Finite Memory , 2014, Journal of Lightwave Technology.