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Dive into the research topics where Nobukazu Koizumi is active.

Publication


Featured researches published by Nobukazu Koizumi.


european conference on optical communication | 2010

Interplay between local oscillator phase noise and electrical chromatic dispersion compensation in digital coherent transmission system

Shoichiro Oda; Chihiro Ohshima; Toshiki Tanaka; Takahito Tanimura; Hisao Nakashima; Nobukazu Koizumi; Takeshi Hoshida; Huijian Zhang; Zhenning Tao; Jens C. Rasmussen

We demonstrate that the interplay between local oscillator phase noise and electrical chromatic dispersion compensation induces timing jitter as well as intensity noise. The interplay is investigated in 3000 km-long transmission (accumulated dispersion of 47,000 ps/nm) without optical dispersion compensation.


Archive | 1994

Digital subscriber loop interface unit

Mitsuo Kakuishi; Yutaka Awata; Nobukazu Koizumi


Archive | 2000

Data transmission system and receiver unit thereof

Kazutomo Hasegawa; Nobukazu Koizumi; Seiji Miyoshi


Archive | 2010

DIGITAL COHERENT RECEIVING APPARATUS

Nobukazu Koizumi; Takeshi Hoshida; Takahito Tanimura; Hisao Nakashima; Koji Nakamuta; Noriyasu Nakayama


Archive | 1993

Transversal filter for use in a digital subscriber line transmission interface

Mitsuo Kakuishi; Seiji Mikyoshi; Hiroaki Itokawa; Nobukazu Koizumi; Yutaka Awata; Yuko Kurosaki


Archive | 1999

Digital subscriber line communicating system and a transceiver in the system

Kazutomo Hasegawa; Seiji Miyoshi; Yutaka Awata; Takashi Sasaki; Nobukazu Koizumi


Archive | 2005

Digital subscriber line transmission method, apparatus and system

Kazutomo Hasegawa; Hidetake Asahina; Seiji Miyoshi; Nobukazu Koizumi; Yutaka Awata


Archive | 1995

Echo canceller and waveform-distortion compensation device

Nobukazu Koizumi; Mitsuo Kakuishi; Yutaka Awata


Archive | 1996

Access line termination unit

Nobukazu Koizumi; Yutaka Awata


Archive | 1992

Jitter compensating device

Yutaka Awata; Mitsuo Kakuishi; Nobukazu Koizumi

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