Dr. Zhaokun Li Profile

Dr. Zhaokun Li

at Shanghai Jiao Tong Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 4 December 2020 Paper

Performance comparison of two OAM shift keying CNN demodulating schemes

Zhaokun Li, Jianbo Su

Proceedings Volume 11617, 1161703 (2020) https://doi.org/10.1117/12.2584199

Read Abstract +

The technique of orbital angular momentum (OAM) increases the channel capacity in free space optical (FSO) communications. Lately, the convolutional neural network (CNN)-based demodulating for the OAM shift keying (OAM-SK) draws great attention. Unfortunately, the atmospheric turbulence (AT) causes a critical challenge of wavefront distortion for OAM-SK-FSO links. In this study, we analyze two different methods to resist the negative influence caused by the AT in the OAM-SK-FSO link. The first method is to compensate for the wavefront by using the adaptive optics system (AOS) directly. On the contrary, the second method is to increase the CNN demodulator's recognition rate for all ATs by deeply digging into the OAM image dataset. An AT-detecting based multiple CNN (ATDM-CNN) demodulator, rather than the costly physical devices AOS, is proposed to achieve a qualified OAM modes recognition rate. The AT detector detects the AT strength, and an AT-determined demodulator is activated to recognize the incident OAM modes. The two methods are compared by simulation in different AT cases. Satisfactory results indicate the improvement in the recognition rate for each method. The advantages and disadvantages of these two methods are also listed.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years