Yuji Igata
Panasonic
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Yuji Igata.
international symposium on electromagnetic compatibility | 2009
Kenichi Nakagawa; Satoshi Hosoya; Masamitsu Tokuda; Yuji Igata
The interference characteristics of a PLC system using Wavelet-OFDM were measured when narrowband interference signals were impressed. The results showed that the PHYsical layer (PHY) rate at the all-frequencies band hardly decreased at all at C(Carrier)/I(Interference) of -10 dB or more, but began to decrease rapidly at C/I of -30 dB or less when interference signals were impressed in the frequency band of the PLC signals. In addition, when C/I became -60 dB, the PHY rate at the frequency corresponding to the notch band became about 10 Mbps higher than that at a frequency not corresponding to the notch band. This demonstrates that a Wavelet-OFDM PLC system has an excellent interference characteristic, on that is fully on a par with that of an FFT-OFDM PLC system.
international symposium on power line communications and its applications | 2009
Kenichi Nakagawa; Satoshi Hosoya; Masamitsu Tokuda; Yuji Igata
In this paper, we measured the interference immunity characteristics of high-speed PLC modem using Wavelet-OFDM when the narrowband conducted interference signal was injected, and also calculated them by the computer simulation using MATLAB/ Simulink. As the results, it was clear that (1) measured PHY rate at the all frequency band hardly decreased in C/I of more than −10dB, but began to decrease rapidly in C/I of less than −30dB when the interference signal was injected in the frequency band of PLC signal, (2) when C/I became −60dB, the measured PHY rate at the frequency existing the notch band were improved around 10Mbps than that at the frequency not existing the notch band, (3) when the narrowband interference wave was injected outside of PLC frequency band, the measured PHY rate did not decrease than that in each notch band, (4) calculated PHY rate at the frequency existing the notch band were improved around 10Mbps than that at the frequency not existing the notch band, when C/I became below −10dB. Therefore, it was revealed that Wavelet-OFDM PLC system had good interference immunity characteristics.
Archive | 2009
Akio Kurobe; Shigeo Yoshida; Tomohiro Kimura; Yuji Igata; Masahiro Maki; Toshiyuki Wakisaka; Hisao Koga; Mutsuhiko Oishi
Archive | 2003
Yuji Igata; Masahiro Maki; Toshiyuki Wakizaka; 裕司 井形; 昌弘 牧; 俊幸 脇坂
Archive | 1996
Shoichi Koga; Yuji Igata; Satoshi Hasako; Masahiro Maki; Michinori Kishimoto
Archive | 2006
Akio Kurobe; Go Kuroda; Koji Ikeda; Hisao Koga; Yuji Igata
Archive | 1999
Satoshi Shinozaki; Masahiro Maki; Yuji Igata
Archive | 2006
Hisao Koga; Nobutaka Kodama; Yasushi Yokomitsu; Yuji Igata; Masahiko Haraguchi; Toru Yasukawa
Archive | 2006
Hisao Koga; Yuji Igata; Ryota Yukizane; Fumio Ichihara; Mutsuhiko Oishi
Archive | 2011
Akio Kurobe; Koji Ikeda; Go Kuroda; Hisao Koga; Yuji Igata
