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Paper Abstract and Keywords
Presentation 2009-01-22 13:40
A Study on Partial Spectrum Transmission Method for Dynamic Spectrum Access
Yasunori Futatsugi, Shousei Yoshida, Masayuki Ariyoshi (NEC) SR2008-69
Abstract (in Japanese) (See Japanese page) 
(in English) Dynamic Spectrum Access (DSA) has attracted attentions as a promising technology for improving frequency spectrum utilization. For DSA, low-priority system is allowed to transmit the spectrum without interfering high-priority system. It is preferable to select modulation scheme which is appropriate for the low-priority user’s condition and radio environment considering required Eb/N0, frequency efficiency, PAPR. In the case of packet communication, Adaptive Modulation and channel Coding(AMC) is adopted. When received SINR condition is better, higher order modulation scheme such as Quadrature Amplitude Modulation(QAM) is selected in order to transmit high speed packets. However, the higher order QAM may occur link performance degradation due to the shorter Euclidean distance in the constellation. Meanwhile, lower order modulation scheme such as Phase Shift Keying(PSK) is capable of preventing such performance degradation. Thus, it is expected to improve link performance by using PSK instead of QAM. In this paper, we propose a Partial Spectrum Transmission(PST) method for single carrier transmission. The proposed method would be applicable for the DSA systems. It is shown by computer simulations that the performance of PST outperforms the performance of conventional QAM when coding rate and roll-off factor are high value. Specifically, required Eb/N0 at Block Error Rate(BLER) of 1E-2 and PAPR for the proposed PST(1/2) is reduced by approximately maximum 1dB comparing to that of 16QAM respectively, under the conditions of coding rate of 8/9 and roll-off factor α=0.7~1.0.
Keyword (in Japanese) (See Japanese page) 
(in English) Single Carrier / Partial Spectrum / Sequence Estimation / Iterative Equalization / Interference Cancellation / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 400, SR2008-69, pp. 1-6, Jan. 2009.
Paper # SR2008-69 
Date of Issue 2009-01-15 (SR) 
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 SR  
Conference Date 2009-01-22 - 2009-01-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Cognitive radio, invited talk, and general session 
Paper Information
Registration To SR 
Conference Code 2009-01-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Partial Spectrum Transmission Method for Dynamic Spectrum Access 
Sub Title (in English)  
Keyword(1) Single Carrier  
Keyword(2) Partial Spectrum  
Keyword(3) Sequence Estimation  
Keyword(4) Iterative Equalization  
Keyword(5) Interference Cancellation  
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1st Author's Name Yasunori Futatsugi  
1st Author's Affiliation NEC Corporation (NEC)
2nd Author's Name Shousei Yoshida  
2nd Author's Affiliation NEC Corporation (NEC)
3rd Author's Name Masayuki Ariyoshi  
3rd Author's Affiliation NEC Corporation (NEC)
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Speaker Author-1 
Date Time 2009-01-22 13:40:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2008-69 
Volume (vol) vol.108 
Number (no) no.400 
Page pp.1-6 
#Pages
Date of Issue 2009-01-15 (SR) 


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