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Paper Abstract and Keywords
Presentation 2007-12-21 10:00
On Index of Spectrum Use Efficiency with Space Domain Multiplexing in Account -- Concept Proposal of "Information Flux" and "Information Flux Density" --
Makoto Taromaru, Kazuto Yano, Satoshi Tsukamoto, Shoichi Kitazawa, Amane Miura, Masazumi Ueba (ATR) RCS2007-126
Abstract (in Japanese) (See Japanese page) 
(in English) This report studies an index of radio spectrum use efficiency with degree of space multiplexing in account. We introduce a concept of "Information Flux" to evaluate spatial-temporal spectrum efficiency and propose "Spatially Averaged Information Flux Density" (SA-IFD) as that index. Information Flux is defined as a line originating from the transmitter of desired wave and terminating at the receiver of destination, where the thickness is the radio channel capacity (bit/s) determined by the SINR. It can be compared to a linear "pipe" having cross section size of the channel capacity or a bundle of "unit-capacity pipes" having 1 bit/s capacity. Information Flux Density (IFD) is defined as the density of the pipes crossing arbitrary line or plane in the observed space where its unit is bit/s/m or bit/s/m2 respectively. The proposed index, SA-IFD is given by integral of or averaging the IFD in the whole observed space and in specified frequency band so this index is proportional to channel capacity and distance between the transmitter and the receiver of each connection.
Keyword (in Japanese) (See Japanese page) 
(in English) Channel Capacity / Flux / Throughput / Space Division Multiplexing / Spectrum Efficiency / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 402, RCS2007-126, pp. 85-90, Dec. 2007.
Paper # RCS2007-126 
Date of Issue 2007-12-13 (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 RCS2007-126

Conference Information
Committee RCS SAT  
Conference Date 2007-12-20 - 2007-12-21 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2007-12-RCS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On Index of Spectrum Use Efficiency with Space Domain Multiplexing in Account 
Sub Title (in English) Concept Proposal of "Information Flux" and "Information Flux Density" 
Keyword(1) Channel Capacity  
Keyword(2) Flux  
Keyword(3) Throughput  
Keyword(4) Space Division Multiplexing  
Keyword(5) Spectrum Efficiency  
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Keyword(7)  
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1st Author's Name Makoto Taromaru  
1st Author's Affiliation Advanced Telecommunication Research Institute International (ATR)
2nd Author's Name Kazuto Yano  
2nd Author's Affiliation Advanced Telecommunication Research Institute International (ATR)
3rd Author's Name Satoshi Tsukamoto  
3rd Author's Affiliation Advanced Telecommunication Research Institute International (ATR)
4th Author's Name Shoichi Kitazawa  
4th Author's Affiliation Advanced Telecommunication Research Institute International (ATR)
5th Author's Name Amane Miura  
5th Author's Affiliation Advanced Telecommunication Research Institute International (ATR)
6th Author's Name Masazumi Ueba  
6th Author's Affiliation Advanced Telecommunication Research Institute International (ATR)
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Speaker Author-1 
Date Time 2007-12-21 10:00:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2007-126 
Volume (vol) vol.107 
Number (no) no.402 
Page pp.85-90 
#Pages 6 
Date of Issue 2007-12-13 (RCS) 

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