WORLDWIDE MARKET RESEARCH REPORT - CISE

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EC/IST FP6 Project No 026920 Work Package: 6 Type of document: Report Date: 20.12.2007 File name: OP_WP6_D37_V1.0.doc Version: 1.0 Title: Worldwide Market Research Report 272 / 356 communications. This OFDM 200MB/s device is now available commercially, for business use. Panasonic has released an HD-PLC (Wavelet-OFDM) 190MB/s modem in December 2006. Toyo Network Systems offers a OFDM 200MB/s modem since December 2006. IO DATA offers a HD-PLC (Wavelet OFDM) 190 MB/s modem for home use (release December 2006). Mitsubishi Electric offers a OFDM 200MB/s modem for business use since January 2007. In a number of Japanese press releases during November and December 2006, it was reported that nine telecommunication carriers (among them KDDI) were providing PLC modems to their FTTH customers. The modems in question were for in-house use and supplied by Panasonic and IO DATA. 5.5.3.3.4 Regulatory Environment in Japan In 2002, the Radio Law of Japan only allowed superposition of the signals of 450KHz or less on power lines. A PLC Study Group was founded in April of 2002 within the Japanese government to concern itself with the authorisation process of using HF band for powerline equipment. The Study Group consisted of professors, researchers from institutes and NHK. Power utility and PLC equipment manufacturers did not participate. The strongest opposition came from amateur radio operators, of which more than 1 million carried a licence. As a result of previous and subsequent tests through June 2002, the PLC Study Group concluded 4 that: • allocation of the HF band (2 MHz – 30 MHz) for PLC is too early. • experimental application of PLC is needed for less radiation at special permit. • active participation in discussions on the world standards such as CISR is expected for reflecting the situation in Japan. 4 PLC Forum http://www.plcforum.org/docs/world_summit/Reg_Japan.pdf
EC/IST FP6 Project No 026920 Work Package: 6 Type of document: Report Date: 20.12.2007 File name: OP_WP6_D37_V1.0.doc Version: 1.0 Title: Worldwide Market Research Report 273 / 356 Figure 5-58 Radio law in Japan in 2002 Source: Imerge, 2004 From January 2005 through December 2005 the MIC Study Group analysed the coexistence between PLC and other HF systems to confirm its proposed limits. These were then passed to the Telecommunications Council which determined the technical conditions (January 2006-June 2006) and consequently adopted stricter limits than the Study Group. These were then passed to the Radio Regulatory Council and a statement on deregulation was issued in October 2006. The proposed limits set for PLC indoor powerline were: Figure 5-59 Common Mode Current (CMI) proposed limits Source: Tepco, Asia PLC Conference 2007 The Study Group thus set CMI at less than 30 dBuA@ 2M-30MHz range. As PLC emissions exceeded ambient noise at high frequency in wooden houses, the limits for CMI @ 15M- 30MHz were reduced to 20dBuA. LCL values of 16dB have been achieved in 99% of the cases.
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WORLDWIDE MARKET RESEARCH REPORT - CISE

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