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Patent Searching and Data


Title:
OPTICAL RECEPTION DEVICE AND OPTICAL RECEPTION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/116503
Kind Code:
A1
Abstract:
In the present invention, a neural network unit (4) having the same number of output layers (42-1 through 42-M) as the number (M) of input symbols generates likelihoods for each of the symbols by means of non-linear conversion of a multiply sum of the input symbols and the connection weight between elements. A likelihood selection unit (5) selects likelihoods for each of the output layers from the likelihoods generated by the neural network unit (4). A delay adjustment unit (7) converts parallel symbol strings corresponding to the selected likelihoods into a serial symbol string. A demodulation unit (8) demodulates a bit string from the serial symbol string. A hard decision error correction decoding unit (9) performs hard decision-based error correction decoding on the basis of the bit string.

Inventors:
MATSUMOTO, Ryosuke (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2017/044916
Publication Date:
June 20, 2019
Filing Date:
December 14, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H04B10/69; H03M13/45; H04B3/06
Foreign References:
JP2017520974A2017-07-27
US9166701B12015-10-20
JP2017126051A2017-07-20
Other References:
RIOS-MULLER, R. ET AL.: "Experimental estimation of optical nonlinear memory channel conditional distribution using deep neural networks", OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC, March 2017 (2017-03-01), pages 1 - 3, XP033101367
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (Akasaka Sanno Center Bldg. 5F, 12-4 Nagata-cho 2-chome, Chiyoda-k, Tokyo 14, 〒1000014, JP)
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