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Paper Abstract and Keywords
Presentation 2009-05-22 09:20
An Optimum Modulation in n-Dimensional Euclidean Space
Takeharu Kohri (Sizuoka Inst. of Sci and Tech.) RCS2009-14
Abstract (in Japanese) (See Japanese page) 
(in English) The modulation method of sending maximum information by a minimum electric power explains obtaining by Hypersphere Packing in n dimension Euclid space. The optimum constellation points arrangement in two dimensions and three dimensions are shown. The optimum arrangement is found up to eight dimensions now.
The signal constellation points of QPSK, 16QAM, and 256QAM are not the best of arrangement. A triangular lattice array is the best for especially two dimensions, and it is shown that the packing densities is 0.906.
It is shown to become a 4th Dimension modulation signal by assuming the horizontal vertical polarization signal to be orthogonal signals describing orthogonal signals in a single career.
Keyword (in Japanese) (See Japanese page) 
(in English) Modulation / Euclidean Space / Polarized wave / Hypersphere Packing / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 38, RCS2009-14, pp. 79-83, May 2009.
Paper # RCS2009-14 
Date of Issue 2009-05-14 (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 RCS2009-14

Conference Information
Committee RCS IN  
Conference Date 2009-05-21 - 2009-05-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) multihop, mesh network, network coding, wireless communication, etc. 
Paper Information
Registration To RCS 
Conference Code 2009-05-RCS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Optimum Modulation in n-Dimensional Euclidean Space 
Sub Title (in English)  
Keyword(1) Modulation  
Keyword(2) Euclidean Space  
Keyword(3) Polarized wave  
Keyword(4) Hypersphere Packing  
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1st Author's Name Takeharu Kohri  
1st Author's Affiliation Sizuoka Institute of Science and Technology (Sizuoka Inst. of Sci and Tech.)
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Speaker Author-1 
Date Time 2009-05-22 09:20:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2009-14 
Volume (vol) vol.109 
Number (no) no.38 
Page pp.79-83 
#Pages 5 
Date of Issue 2009-05-14 (RCS) 

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