Paper Abstract and Keywords |
Presentation |
2021-11-19 11:15
[Invited Talk]
Recent progress of coherent free-space optical communications Chao Zhang (Shimane Univ.), Kota Uyama, Zheyuan Zhang, Sze Yun Set, Shinji Yamashita (Univ. of Tokyo) OFT2021-54 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Free-space optical communication is preferred for its advantages over radio frequency wireless communication, such as no spectrum licensing, large bandwidth, inherent security, electromagnetic interference immunity etc. Moreover, free-space optical communication also benefits from low-cost installation and maintenance. It has been studied for the next generation access networks, inter-building connections, ground-to-unmanned aerial vehicle links, underwater communication applications, inter-satellite links, deep space links etc. Among various detection approaches, coherent detection can achieve the best sensitivity in a bandwidth-limited condition, effectively demodulate optical multilevel-coded signals to attain high spectral efficiency, offer excellent background noise rejection. However, such an attractive free-space optical communication suffers from waveform distortion, scintillation, phase fluctuations etc. after transmission in atmospheric channels. In this article, we present an up-to-date survey on coherent free-space optical communication, the atmospheric turbulent effects especially impacts of turbulence in free-space optical links, and countermeasures against such impairments. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
6G / free-space optical communication / atmospheric turbulence / scintillation / wavefront distortion / coherent detection / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 252, OFT2021-54, pp. 17-22, Nov. 2021. |
Paper # |
OFT2021-54 |
Date of Issue |
2021-11-11 (OFT) |
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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OFT2021-54 |
Conference Information |
Committee |
OFT OCS IEE-CMN ITE-BCT |
Conference Date |
2021-11-18 - 2021-11-19 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
OFT |
Conference Code |
2021-11-OFT-OCS-CMN-BCT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Recent progress of coherent free-space optical communications |
Sub Title (in English) |
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Keyword(1) |
6G |
Keyword(2) |
free-space optical communication |
Keyword(3) |
atmospheric turbulence |
Keyword(4) |
scintillation |
Keyword(5) |
wavefront distortion |
Keyword(6) |
coherent detection |
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1st Author's Name |
Chao Zhang |
1st Author's Affiliation |
Shimane University (Shimane Univ.) |
2nd Author's Name |
Kota Uyama |
2nd Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
3rd Author's Name |
Zheyuan Zhang |
3rd Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
4th Author's Name |
Sze Yun Set |
4th Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
5th Author's Name |
Shinji Yamashita |
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University of Tokyo (Univ. of Tokyo) |
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Speaker |
Author-1 |
Date Time |
2021-11-19 11:15:00 |
Presentation Time |
45 minutes |
Registration for |
OFT |
Paper # |
OFT2021-54 |
Volume (vol) |
vol.121 |
Number (no) |
no.252 |
Page |
pp.17-22 |
#Pages |
6 |
Date of Issue |
2021-11-11 (OFT) |
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