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Paper Abstract and Keywords
Presentation 2011-10-28 13:40
Throughput Comparisons on Star 32/64 QAM Schemes Based on Mutual Information Considering Cubic Metric
Reo Kobayashi (Tokyo City Univ.), Teruo Kawamura, Nobuhiko Miki (NTT DOCOMO), Mamoru Sawahashi (Tokyo City Univ.) RCS2011-181
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents the comparisons on achievable throughputs between Star 32/64QAM and Square 32/64QAM schemes based on mutual information (MI) considering peak-to-average power ratio (PAPR) of the modulated signal. As a PAPR criterion, we use cubic metric (CM), which directly corresponds to the transmission back-off of a power amplifier. In the analysis, we present the best ring ratio for the Star 32 or 64QAM schemes from the viewpoint of minimizing the required received signal-to-noise power ratio (SNR) considering a CM which achieves the peak throughput, i.e., maximum transmission rate with error-free. We show with the best ring ratios, the (4, 12, 16) Star 32QAM scheme with three rings achieves the lower required received SNR considering CM compared to that for the Square 32QAM. Similarly, we show that the (4, 12, 20, 28) Star 64QAM scheme achieves the almost same required received SNR considering CM as that for the Square 64QAM scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communications / Multi-level modulation / Mutual information / Throughput / Cubic metric / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 260, RCS2011-181, pp. 243-248, Oct. 2011.
Paper # RCS2011-181 
Date of Issue 2011-10-19 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee RCS AN SR USN  
Conference Date 2011-10-26 - 2011-10-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Sophia Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Distributed Networks, etc. 
Paper Information
Registration To RCS 
Conference Code 2011-10-RCS-AN-SR-USN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Throughput Comparisons on Star 32/64 QAM Schemes Based on Mutual Information Considering Cubic Metric 
Sub Title (in English)  
Keyword(1) Mobile communications  
Keyword(2) Multi-level modulation  
Keyword(3) Mutual information  
Keyword(4) Throughput  
Keyword(5) Cubic metric  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Reo Kobayashi  
1st Author's Affiliation Tokyo City University (Tokyo City Univ.)
2nd Author's Name Teruo Kawamura  
2nd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
3rd Author's Name Nobuhiko Miki  
3rd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
4th Author's Name Mamoru Sawahashi  
4th Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Speaker Author-1 
Date Time 2011-10-28 13:40:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2011-181 
Volume (vol) vol.111 
Number (no) no.260 
Page pp.243-248 
#Pages 6 
Date of Issue 2011-10-19 (RCS) 

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