Title:
RECEPTION DEVICE, TRANSMISSION DEVICE, AND OPTICAL COMMUNICATION METHOD IN OPTICAL COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/123718
Kind Code:
A1
Abstract:
[Problem] To obtain a reception device with which it is possible to perform optimum high-density wavelength multiplexing that conforms to a transmission condition and improve the efficiency of frequency utilization. [Solution] A reception device 20 is configured to be provided with a separation means 21 and a plurality of optical reception means 22. The optical reception means 22 are further provided with a photoelectric conversion means 23, a reception coefficient computation means 24, and a band restoration means 25. The separation means 21 separates a multiplexed signal spaced by less than or equal to a baud rate to which spectrum shaping for narrowing the signal bandwidth of each channel to or less than the baud rate was applied on the transmission side as a band narrowing filter process on the basis of the characteristic of a transmission path. The photoelectric conversion means 23 converts an optical signal into an electrical signal. The reception coefficient computation means 24 acquires a parameter of the spectrum shaping applied on the transmission side as a band narrowing parameter. The band restoration means 25 applies a process of reverse characteristic to the band narrowing filter process to a received signal on the basis of the acquired band narrowing parameter and restores the band of the received signal.
Inventors:
NOGUCHI HIDEMI (JP)
Application Number:
PCT/JP2017/045469
Publication Date:
July 05, 2018
Filing Date:
December 19, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04J14/02
Domestic Patent References:
| WO2015120894A1 | 2015-08-20 |
Foreign References:
| US20160277118A1 | 2016-09-22 |
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
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