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Paper Abstract and Keywords
Presentation 2007-07-19 13:30
Study of OSDM over Quasi-Static Channel
Chenggao Han (Univ. of Electro-comm.), Naoki Suehiro (Univ. of Tsukuba), Takeshi Hashimoto (Univ. of Electro-comm.) RCS2007-35
Abstract (in Japanese) (See Japanese page) 
(in English) Since that practical communication systems are usually communicated under multi-path environment, it becomes very hard to extract the original information from received signal because multiple version of the signal inference with each other. By this reason, OFDM technique are widely used in communication systems which work under multi-path environment e.g. ADSL, wireless LAN and digital TV etc.. In OFDM system, little inter symbol interference (ISI) can often be tolerated and no extra counter measure such as an equalizer is needed. This, though, does not perform well when the channel nulls are located on the subcarriers. On the other hand, Suehiro, et al. have proposed a new information transmission method-OSDM (Orthogonal Signal Division Multiplexing) using the Kronecker product between the rows of DFT matrix and the data sequences.
With keeping high frequency usage efficiency, multi-path environment robustness of OSDM guarantees symbols recovery by low complexity of receiver even the channel nulls are located on the subcarriers.
In this paper, we compare OSDM with Single carrier transmission method (SC-method) and OFDM and analyze it under quasi-static multi-path environment. We also compare their spectrum and complexity. The numerical results show that the channel nulls are improved in OSDM and when we apply MMSE equalizer on receiver, OSDM provides far better performance than OFDM over Rayleigh fading channel with low complexity.
Keyword (in Japanese) (See Japanese page) 
(in English) OSDM / OFDM / Frequency usage efficiency / DFT / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 147, RCS2007-35, pp. 37-42, July 2007.
Paper # RCS2007-35 
Date of Issue 2007-07-12 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2007-35

Conference Information
Committee NS RCS  
Conference Date 2007-07-19 - 2007-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Kitami Institute of Tech. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2007-07-NS-RCS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study of OSDM over Quasi-Static Channel 
Sub Title (in English)  
Keyword(1) OSDM  
Keyword(2) OFDM  
Keyword(3) Frequency usage efficiency  
Keyword(4) DFT  
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1st Author's Name Chenggao Han  
1st Author's Affiliation University of Electro-communications (Univ. of Electro-comm.)
2nd Author's Name Naoki Suehiro  
2nd Author's Affiliation University of Tsukuba (Univ. of Tsukuba)
3rd Author's Name Takeshi Hashimoto  
3rd Author's Affiliation University of Electro-communications (Univ. of Electro-comm.)
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Speaker Author-1 
Date Time 2007-07-19 13:30:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2007-35 
Volume (vol) vol.107 
Number (no) no.147 
Page pp.37-42 
#Pages 6 
Date of Issue 2007-07-12 (RCS) 

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