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Paper Abstract and Keywords
Presentation 2009-07-31 11:00
A Study of Transmission System Using AC of One-Seg for Earthquake Early Warning -- Transmission Characteristics under Noise and Fading Environments --
Makoto Taguchi, Kenichi Murayama (NHK), Hiroyuki Furuta (NHK-ES), Masayuki Takada, Hiroyuki Hamazumi, Kazuhiko Shibuya (NHK)
Abstract (in Japanese) (See Japanese page) 
(in English) An Earthquake Early Warning (EEW) is a service of Japan Meteorological Agency (JMA), which issues the advance warning of a large-scale earthquake before the arrival of its main tremor when it occurs. The service is based on the prompt estimation of the focus and magnitude of the earthquake by analyzing its initial tremor observed near the epicenter. NHK has been automatically broadcasting JMA’s EEW on television and radio programs as soon as it is issued.
The Japanese digital terrestrial television broadcasting system has special carriers called Auxiliary Channel (AC) besides the main signals of video, audio and so on. ACs have advantageous characteristics to be used for the broadcast of an EEW: short delay transmission without any data compression coding such as video or audio information and channel coding such as data interleaving during transmission; robustness against noise and interference due to the use of DBPSK modulation. We studied a transmission of ACs in One-Seg to carry the information of an EEW. The results showed the promising good transmission characteristics under noise and fading environments.
Keyword (in Japanese) (See Japanese page) 
(in English) Earthquake Early Warning / One-Seg / AC / Maximal Ratio Combining / / / /  
Reference Info. ITE Tech. Rep., vol. 33, no. 32, BCT2009-69, pp. 43-46, July 2009.
Paper # BCT2009-69 
Date of Issue 2009-07-23 (BCT) 
ISSN Print edition: ISSN 1342-6893
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Conference Information
Committee BCT HOKKAIDO IEEE-BT  
Conference Date 2009-07-30 - 2009-07-31 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To BCT 
Conference Code 2009-07-BCT-HOKKAIDO-BT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Transmission System Using AC of One-Seg for Earthquake Early Warning 
Sub Title (in English) Transmission Characteristics under Noise and Fading Environments 
Keyword(1) Earthquake Early Warning  
Keyword(2) One-Seg  
Keyword(3) AC  
Keyword(4) Maximal Ratio Combining  
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1st Author's Name Makoto Taguchi  
1st Author's Affiliation Japan Broadcasting Corporation (NHK)
2nd Author's Name Kenichi Murayama  
2nd Author's Affiliation Japan Broadcasting Corporation (NHK)
3rd Author's Name Hiroyuki Furuta  
3rd Author's Affiliation NHK Engineering Services (NHK-ES)
4th Author's Name Masayuki Takada  
4th Author's Affiliation Japan Broadcasting Corporation (NHK)
5th Author's Name Hiroyuki Hamazumi  
5th Author's Affiliation Japan Broadcasting Corporation (NHK)
6th Author's Name Kazuhiko Shibuya  
6th Author's Affiliation Japan Broadcasting Corporation (NHK)
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Speaker Author-1 
Date Time 2009-07-31 11:00:00 
Presentation Time 30 minutes 
Registration for BCT 
Paper # BCT2009-69 
Volume (vol) vol.33 
Number (no) no.32 
Page pp.43-46 
#Pages
Date of Issue 2009-07-23 (BCT) 


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