IEICE Trans

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IEICE Trans

Hiroki KAWAHARA

Level Allocation of Four-Level Pulse-Amplitude Modulation Signal in Optically Pre-Amplified Receiver Systems Hiroki KAWAHARA Koji IGARASHI Kyo INOUE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2023/08/01 Vol. E106-B No. 8 pp. 652-659 Type of Manuscript: PAPER Category: Fiber-Optic Transmission for Communications Keyword: pulse-amplitude modulation, level allocation, amplified spontaneous emission,
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Highly Efficient Multi-Band Optical Networks with Wavelength-Selective Band Switching Masahiro NAKAGAWA Hiroki KAWAHARA Takeshi SEKI Takashi MIYAMURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2023/05/01 Vol. E106-B No. 5 pp. 416-426 Type of Manuscript: PAPER Category: Fiber-Optic Transmission for Communications Keyword: multi-band optical networks, optical cross-connect, band switching, all-optical wavelength converter,
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Analysis of Signal Distribution in ASE-Limited Optical On-Off Keying Direct-Detection Systems Hiroki KAWAHARA Kyo INOUE Koji IGARASHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2021/11/01 Vol. E104-B No. 11 pp. 1386-1394 Type of Manuscript: PAPER Category: Fiber-Optic Transmission for Communications Keyword: on-off keying signal, probability density function, amplified spontaneous emission,
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Real-Time Experiment and Numerical Analysis of Highly-Survivable Adaptive Restoration for High-Capacity Optical Signal Transmission Hiroki KAWAHARA Kohei SAITO Masahiro NAKAGAWA Takashi KUBO Takeshi SEKI Takeshi KAWASAKI Hideki MAEDA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2021/04/01 Vol. E104-B No. 4 pp. 360-369 Type of Manuscript: PAPER Category: Transmission Systems and Transmission Equipment for Communications Keyword: high-order QAM modulation, rate-adaptive transponder, CD-/CDC-ROADM, adaptive restoration,
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Dual-Carrier 1-Tb/s Transmission Over Field-Deployed G.654.E Fiber Link Using Real-Time Transponder Fukutaro HAMAOKA Takeo SASAI Kohei SAITO Takayuki KOBAYASHI Asuka MATSUSHITA Masanori NAKAMURA Hiroki TANIGUCHI Shoichiro KUWAHARA Hiroki KAWAHARA Takeshi SEKI Josuke OZAKI Yoshihiro OGISO Hideki MAEDA Yoshiaki KISAKA Masahito TOMIZAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2020/11/01 Vol. E103-B No. 11 pp. 1183-1189 Type of Manuscript: INVITED PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network) Category: Keyword: optical fiber communication, digital coherent transmission, real-time transmission, field transmission,
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