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Paper Abstract and Keywords
Presentation 2018-06-22 15:40
Blind Selected Mapping using 2-level Phase Rotation Set and 2-step Phase Rotation Sequence Estimation based on the Fourth-power Constellation
Amnart Boonkajay, Fumiyuki Adachi (Tohoku Univ.) RCS2018-77
Abstract (in Japanese) (See Japanese page) 
(in English) Blind selected mapping (blind SLM) is an effective peak-to-average power ratio (PAPR) reduction technique which does not require side information sharing. In the blind SLM, the receiver employs phase rotation sequence estimation, which can be carried out using maximum-likelihood (ML) estimation or 2-step sequence estimation using Viterbi algorithm. Recently, we showed that the use of codebook generated from a 2-level phase rotation set {0 degree, 135 degree} and the ML phase rotation sequence estimation based on the fourth-power QAM constellation requires much less complexity compared to the conventional blind SLM. However, when the number of phase rotation sequences is large, the computational complexity remains high. In this paper, we introduce a 2-level phase rotation set {0 degree, 135 degree} and the 2-step sequence estimation using Viterbi algorithm to a blind SLM. It is found that the use of 2-level phase rotation set significantly reduce the number of branches and states in the Viterbi algorithm and hence, leads to complexity reduction. Simulation results confirm that the blind SLM using the 2-level phase rotation set and the 2-step sequence estimation effectively lowers the PAPR and achieves similar BER to the ML sequence estimation with less computational complexity.
Keyword (in Japanese) (See Japanese page) 
(in English) Peak-to-average power ratio (PAPR) / OFDM / single carrier (SC) / selected mapping (SLM) / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 101, RCS2018-77, pp. 249-254, June 2018.
Paper # RCS2018-77 
Date of Issue 2018-06-13 (RCS) 
ISSN 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 RCS2018-77

Conference Information
Committee RCS  
Conference Date 2018-06-20 - 2018-06-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagasaki University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2018-06-RCS 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Blind Selected Mapping using 2-level Phase Rotation Set and 2-step Phase Rotation Sequence Estimation based on the Fourth-power Constellation 
Sub Title (in English)  
Keyword(1) Peak-to-average power ratio (PAPR)  
Keyword(2) OFDM  
Keyword(3) single carrier (SC)  
Keyword(4) selected mapping (SLM)  
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1st Author's Name Amnart Boonkajay  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Fumiyuki Adachi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2018-06-22 15:40:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2018-77 
Volume (vol) vol.118 
Number (no) no.101 
Page pp.249-254 
#Pages 6 
Date of Issue 2018-06-13 (RCS) 

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