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Paper Abstract and Keywords
Presentation 2018-10-18 11:45
[Invited Lecture] Phase Rotated Non-Orthogonal Multiple Access
Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech.) RCS2018-157
Abstract (in Japanese) (See Japanese page) 
(in English) As a multiple access technique candidate of 5G, non-orthogonal multiple access (NOMA) has attracted much attention for its high spectral efficiency. On its receiver side, successive interference cancellation (SIC) cancels the dominant interference and detects the desired signal. When a transmit power level allocated to one user is roughly equal to those allocated to other users, however, the bit error rate (BER) performance degrades severely. To alleviate such a problem, this report proposes a novel NOMA scheme with phase rotation, and analyzes the optimum angle of the phase rotation in the case of two modulation schemes. Even when multiuser detection (MUD) that simultaneously detects both desired and interfering signals is employed, the BER performance still degrades due to low minimum distance between the superposed constellation points. To improve the BER performance, this report also proposes a joint MUD and SIC scheme that exploits the advantages of both MUD and SIC. Computer simulations over additive white Gaussian noise (AWGN) and Rayleigh fading channels demonstrate that the joint MUD and SIC scheme with the phase rotation outperforms other detection schemes.
Keyword (in Japanese) (See Japanese page) 
(in English) NOMA / phase rotation / multiuser detection / successive interference cancellation / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 254, RCS2018-157, pp. 39-44, Oct. 2018.
Paper # RCS2018-157 
Date of Issue 2018-10-11 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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  
Conference Date 2018-10-18 - 2018-10-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, Future Wireless Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2018-10-RCS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Phase Rotated Non-Orthogonal Multiple Access 
Sub Title (in English)  
Keyword(1) NOMA  
Keyword(2) phase rotation  
Keyword(3) multiuser detection  
Keyword(4) successive interference cancellation  
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1st Author's Name Yuyuan Chang  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
2nd Author's Name Kazuhiko Fukawa  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
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Speaker
Date Time 2018-10-18 11:45:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2018-157 
Volume (vol) IEICE-118 
Number (no) no.254 
Page pp.39-44 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2018-10-11 


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