Title:
SUBCHANNEL ENCODING DEVICE, SUBCHANNEL DECODING DEVICE, SUBCHANNEL ENCODING METHOD, SUBCHANNEL DECODING METHOD, AND SUBCHANNEL MULTIPLEXING OPTICAL COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/019620
Kind Code:
A1
Abstract:
The present invention provides a subchannel encoding device (11) comprising: a probability distribution shaping-encoding unit (21) that divides M×N subchannels (M: an integer of 2 or greater; N: an integer of 1 or greater) into N groups and, on the basis of the signal-to-noise ratio of the M×N subchannels, shapes the probability distribution of the transmission modulation symbol of each group and converts an information bit string into a post-shaping bit string that corresponds to the probability distribution of the transmission modulation symbol of each group; a subchannel signal generation unit (22) that generates, from the post-shaping bit string, individual subchannel signals for the M×N subchannels; and a signal multiplexing unit (26) that multiplexes the M×N subchannel signals generated by the subchannel signal generation unit (22) and generates a subchannel multiplex signal.
More Like This:
Inventors:
YOSHIDA TSUYOSHI (JP)
Application Number:
PCT/JP2019/029504
Publication Date:
February 04, 2021
Filing Date:
July 26, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04L27/34; H04L27/26
Foreign References:
| JP2006527573A | 2006-11-30 |
Other References:
XI CHEN ET AL.: "Uniform Entropy Loading for Precoded DMT Systems in Fading Optical Channel", 2018 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP, 2018, XP033486867, Retrieved from the Internet DOI: 10.1109/ACP.2018.8595905
YOSHIDA, TSUYOSHI ET AL.: "Technologies toward Implementation of Probabilistic Constellation Shaping", 2018 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC, 2018, XP033447520, Retrieved from the Internet DOI: 10.1109/ECOC.2018.8535228
GEORG BOCHERER ET AL.: "Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 63, no. 12, 2015, pages 4651 - 4665, XP011593618, DOI: 10.1109/TCOMM.2015.2494016
D. CHE ET AL.: "Approaching the Capacity of Colored-SNR Optical Channels by Multicarrier Entropy Loading", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 36, no. 1, January 2018 (2018-01-01), pages 68 - 78, XP011677742, DOI: 10.1109/JLT.2017.2778290
T. YOSHIDA ET AL.: "Hierarchical Distribution Matching for Probabilistically Shaped Coded Modulation", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 37, no. 6, March 2019 (2019-03-01), pages 1579 - 1589, XP011717097, DOI: 10.1109/JLT.2019.2895065
G. BOCHERER ET AL.: "Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 63, no. 12, December 2015 (2015-12-01), pages 4651 - 4665, XP011593618, DOI: 10.1109/TCOMM.2015.2494016
See also references of EP 3989502A4
YOSHIDA, TSUYOSHI ET AL.: "Technologies toward Implementation of Probabilistic Constellation Shaping", 2018 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC, 2018, XP033447520, Retrieved from the Internet
GEORG BOCHERER ET AL.: "Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 63, no. 12, 2015, pages 4651 - 4665, XP011593618, DOI: 10.1109/TCOMM.2015.2494016
D. CHE ET AL.: "Approaching the Capacity of Colored-SNR Optical Channels by Multicarrier Entropy Loading", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 36, no. 1, January 2018 (2018-01-01), pages 68 - 78, XP011677742, DOI: 10.1109/JLT.2017.2778290
T. YOSHIDA ET AL.: "Hierarchical Distribution Matching for Probabilistically Shaped Coded Modulation", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 37, no. 6, March 2019 (2019-03-01), pages 1579 - 1589, XP011717097, DOI: 10.1109/JLT.2019.2895065
G. BOCHERER ET AL.: "Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 63, no. 12, December 2015 (2015-12-01), pages 4651 - 4665, XP011593618, DOI: 10.1109/TCOMM.2015.2494016
See also references of EP 3989502A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Download PDF: