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Paper Abstract and Keywords
Presentation 2008-07-25 09:30
Application of TMUX for the Next Generation Mobile Communication -- A generalization from OFDM and OFCDM --
Osamu Ichiyoshi (HN21C) SAT2008-11
Abstract (in Japanese) (See Japanese page) 
(in English) Various signal transmission methods based on OFDM are proposed for the next generation mobile communication networks. A combination of CDMA and OFDM called OFCDM is also proposed. In mobile communications, the signal transmission must be made through multi-path radio links and under heavy interferences conditions among adjacent sectors and cells. The signals from multiple sources superpose themselves in such interferences conditions hence the detection of the guard interval (GI) timing will become difficult. Another shortcoming with OFDM is that it does not allow FDMA operation because all the channels are used as a whole. In this paper an alternative signal transmission method based on Trans-Multiplexer (TMUX) is proposed. The proposed system allows a full FDMA operation. Furthermore a CDMA scheme called FDM-CDMA is proposed. The FDM-CDMA conducts a direct frequency spreading in frequency axis and not in time axis but can achieve the features of the conventional CDMA. For example adjacent cells and sectors can share the same frequency bands and the mobile hand-over controls are quite simplified compared with TDMA or FDMA systems.
Keyword (in Japanese) (See Japanese page) 
(in English) Next Generation Mobile Communication System / OFDM / Guard Interval / Guard Time / Multi-path / Delay Spreads / TMUX / FDMA  
Reference Info. IEICE Tech. Rep., vol. 108, no. 149, SAT2008-11, pp. 25-30, July 2008.
Paper # SAT2008-11 
Date of Issue 2008-07-17 (SAT) 
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 SAT2008-11

Conference Information
Committee AP SAT  
Conference Date 2008-07-23 - 2008-07-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Communications, Antennas and Progation, etc. 
Paper Information
Registration To SAT 
Conference Code 2008-07-AP-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Application of TMUX for the Next Generation Mobile Communication 
Sub Title (in English) A generalization from OFDM and OFCDM 
Keyword(1) Next Generation Mobile Communication System  
Keyword(2) OFDM  
Keyword(3) Guard Interval  
Keyword(4) Guard Time  
Keyword(5) Multi-path  
Keyword(6) Delay Spreads  
Keyword(7) TMUX  
Keyword(8) FDMA  
1st Author's Name Osamu Ichiyoshi  
1st Author's Affiliation Human Network for Better 21 Century (HN21C)
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Speaker Author-1 
Date Time 2008-07-25 09:30:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2008-11 
Volume (vol) vol.108 
Number (no) no.149 
Page pp.25-30 
#Pages 6 
Date of Issue 2008-07-17 (SAT) 

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