Paper Abstract and Keywords |
Presentation |
2005-09-08 11:15
undecided Koichiro Imamura, Kazuhiko Shibuya (NHK STRL) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
DTTB (Digital Terrestrial Television Broadcasting) which adopts OFDM method enables SFN (Single Frequency Network) where transmitters broadcast in a same frequency. This is especially true in an SFN service, which suffers from reception degradation caused by multipath interference due to waves from SFN transmitting stations other than the desired one that arrives outside the guard interval (GI). To overcome this problem, we are developing a technology that equalizes multipath outside the GI at the receiver. We recently built a trial system that performs a FFT (Fast Fourier Transform) over multiple symbol durations of OFDM collectively, to convert it into a frequency domain signal, to equalize multipath outside the GI in the frequency domain, rather than in the time domain as the conventional method does. This enables equalization of an advance wave outside the GI, in the same way as is done for a delayed wave. A laboratory test result verified the basic performance of the proposal method. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
DTTB / OFDM / SFN / Guard interval / Multipath / Equalizer / Frequency domain / FFT |
Reference Info. |
IEICE Tech. Rep., vol. 105, Sept. 2005. |
Paper # |
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Date of Issue |
2005-09-01 (MoMuC) |
ISSN |
Print edition: ISSN 0913-5685 |
Download PDF |
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Conference Information |
Committee |
MoNA |
Conference Date |
2005-09-08 - 2005-09-09 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kei-Han-Na NICT |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Harmonization of mobile and broadcast (mobile broadcasting, mobile-broadcast integrated service, mobile broadcast terminal, mobile and broadcast content, multimedia distribution, digital broadcast technology) ITE放送技術研・コンシューマエレクトロニクス研と共催 |
Paper Information |
Registration To |
MoNA |
Conference Code |
2005-09-MoMuC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
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(See Japanese page) |
Title (in English) |
undecided |
Sub Title (in English) |
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Keyword(1) |
DTTB |
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OFDM |
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SFN |
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Guard interval |
Keyword(5) |
Multipath |
Keyword(6) |
Equalizer |
Keyword(7) |
Frequency domain |
Keyword(8) |
FFT |
1st Author's Name |
Koichiro Imamura |
1st Author's Affiliation |
Wireless Systems, NHK S&T Research Laboratories (NHK STRL) |
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Kazuhiko Shibuya |
2nd Author's Affiliation |
Wireless Systems, NHK S&T Research Laboratories (NHK STRL) |
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Speaker |
Author-1 |
Date Time |
2005-09-08 11:15:00 |
Presentation Time |
25 minutes |
Registration for |
MoNA |
Paper # |
MoMuC2005-35 |
Volume (vol) |
vol.105 |
Number (no) |
no.264 |
Page |
pp.27-32 |
#Pages |
6 |
Date of Issue |
2005-09-01 (MoMuC) |
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