Presentation 2005-05-26
Introduction of the Block-OFDM System
Akiyoshi MONMA, Eiji OHTA, Mitsuru UESUGI,
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Abstract(in English) In OFDM system, a cyclic prefix of the OFDM signal is inserted into the guard interval(GI) to remove the adverse effect of multi-path signal. The length of GI that considered an exceptional long delay path is necessary, so that it can be a large data of over-head. In this paper, we propose the Block-OFDM system that assumes time division multiplex pilot symbol at the head of a frame and inserted GI only in the front of pilot symbol. In Block OFDM system, influences of channel are estimated with pilot symbol and the results are interpolated. Using interpolated the results of estimating channel influence, it can be equalized data symbol not inserted GI. We evaluate the transmission performance between the Block-OFDM and the conventional OFDM by simulation and report about it.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) OFDM / Guard Interval / frequency-domain equalization / long delay path
Paper # RCS2005-16
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Committee RCS
Conference Date 2005/5/19(1days)
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Registration To Radio Communication Systems (RCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Introduction of the Block-OFDM System
Sub Title (in English)
Keyword(1) OFDM
Keyword(2) Guard Interval
Keyword(3) frequency-domain equalization
Keyword(4) long delay path
1st Author's Name Akiyoshi MONMA
1st Author's Affiliation Panasonic Mobile Communications Sendai R&D Lab. Co., Ltd.()
2nd Author's Name Eiji OHTA
2nd Author's Affiliation Tokyo Denpan Sekkei Inc.
3rd Author's Name Mitsuru UESUGI
3rd Author's Affiliation Panasonic Mobile Communications Co., Ltd.
Date 2005-05-26
Paper # RCS2005-16
Volume (vol) vol.105
Number (no) 88
Page pp.pp.-
#Pages 4
Date of Issue