Paper Abstract and Keywords |
Presentation |
2020-03-06 14:30
[Invited Lecture]
Study on Constant-Amplitude OFDM Scheme Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech.) RCS2019-391 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Orthogonal frequency-division multiplexing (OFDM) can be considered one of the most effective transmission schemes for digital wireless communications, because OFDM is very robust against multipath channels and inter-symbol interference while dense and orthogonal allocation of the subcarriers can drastically improve the spectral efficiency. However, OFDM suffers from high peak-to-average power ratio (PAPR) due to the use of a large number of subcarriers. To cope with such high PAPR, this report proposes a constant-amplitude OFDM scheme that can achieve PAPR of 0 dB. First, the proposed scheme decomposes an OFDM signal into two constant-amplitude signals, which are transmitted at different timing. On the receiver side, the original OFDM signal is regenerated by combining two received signals that originate from these two constant-amplitude signals, which is equivalent to a received OFDM signal that passes through the wireless channel. As a conventional constant-amplitude OFDM scheme, the constant envelope OFDM (CE-OFDM) scheme transforms the OFDM signal into a phase modulated signal. Computer simulations make a comparison between the proposed and conventional schemes, and demonstrate that the proposed scheme is much superior to CE-OFDM in bit error rate (BER) performance while both the schemes have almost the same out-of-band spectral characteristics. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
wireless communication / OFDM / PAPR / constant-amplitude / constant-envelope / / / |
Reference Info. |
IEICE Tech. Rep., vol. 119, no. 448, RCS2019-391, pp. 371-371, March 2020. |
Paper # |
RCS2019-391 |
Date of Issue |
2020-02-26 (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) |
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RCS2019-391 |
Conference Information |
Committee |
RCS SR SRW |
Conference Date |
2020-03-04 - 2020-03-06 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tokyo Institute of Technology |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Mobile Communication Workshop |
Paper Information |
Registration To |
RCS |
Conference Code |
2020-03-RCS-SR-SRW |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Study on Constant-Amplitude OFDM Scheme |
Sub Title (in English) |
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wireless communication |
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OFDM |
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PAPR |
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constant-amplitude |
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constant-envelope |
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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 |
Author-1 |
Date Time |
2020-03-06 14:30:00 |
Presentation Time |
10 minutes |
Registration for |
RCS |
Paper # |
RCS2019-391 |
Volume (vol) |
vol.119 |
Number (no) |
no.448 |
Page |
p.371 |
#Pages |
1 |
Date of Issue |
2020-02-26 (RCS) |
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