Reduction of nonlinear intrachannel effects by channel asymmetry in transmission lines with strong bit overlapping

2009 International Conference on Ultra Modern Telecommunications &Amp; Workshops

et al. 2009

Section: Skewed Encoding and Its Associated Redundancymentioning

confidence: 88%

“…[4][5][6][7][8][9][10][11]) in high-bit-rate systems. In particular, suppression of ICFWM effects by using certain modulation codes was proposed in [5]. Note that advanced FEC coding schemes can also take into account the particular channel error statistics freeing up additional power budget.…”

Section: Introductionmentioning

confidence: 99%

Efficient weakly-constrained codes for mitigation of patterning effects in Digital Communications

Shafarenko

Федорук

2009 International Conference on Ultra Modern Telecommunications &Amp; Workshops

et al. 2009

“…Patterning effects can occur due to a variety of causes, e.g. intrachannel fourwave mixing for OOK-modulated signal ( [11]- [15]).…”

Section: Introductionmentioning

confidence: 99%

The error statistics analysis of the QPSK-modulated signal in the high-rate optical link

Redyuk

Федорук

et al. 2013

Optics Communications

“…Under such conditions the main contribution to the bit error rate comes from the ghosts pulses that appear in logical-zero time slots surrounded by symmetric patterns of logical-ones [4]. Mitigation of intra-channel nonlinear effects by channel coding has been proposed in [5], [6]. Suppression of the ICFWM effects by employing a pre-encoding was studied in [4], [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Weakly-Constrained Codes for Suppression of Patterning Effects in Digital Communications

Shafarenko

Turitsyn

2010

IEEE Trans. Commun.

???This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder." ???Copyright IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.???We propose weakly-constrained stream and block codes with tunable pattern-dependent statistics and demonstrate that the block code capacity at large block sizes is close to the the prediction obtained from a simple Markov model published earlier. We demonstrate the feasibility of the code by presenting original encoding and decoding algorithms with a complexity log-linear in the block size and with modest table memory requirements. We also show that when such codes are used for mitigation of patterning effects in optical fibre communications, a gain of about 0.5 dB is possible under realistic conditions, at the expense of small redundancy (???10%)