scholarly journals Statistical model for the weak turbulence-induced attenuation and crosstalk in free space communication systems with orbital angular momentum

2021 ◽  
Author(s):  
Yuting Pan ◽  
Ping Wang ◽  
Wei Wang ◽  
Shuang Li ◽  
Cheng Mingjian ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Statistical Model ◽  
Orbital Angular Momentum ◽  
Free Space ◽  
Communication Systems ◽  
Weak Turbulence ◽  
Space Communication ◽  
Free Space Communication

scholarly journals Orbital Angular Momentum Multiplexed Free-Space Optical Communication Systems Based on Coded Modulation

2018 ◽  
Vol 8 (11) ◽  
pp. 2179 ◽  
Author(s):  
Zhen Qu ◽  
Ivan Djordjevic
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Optical Communication ◽  
Free Space ◽  
Communication Systems ◽  
Huffman Coding ◽  
Free Space Optical Communication ◽  
Free Space Optical ◽  
Optical Communication Systems ◽  
Space Optical Communication

In this paper, we experimentally investigate the turbulence mitigation methods in free-space optical communication systems based on orbital angular momentum (OAM) multiplexing. To study the outdoor atmospheric turbulence environment, we use an indoor turbulence emulator. Adaptive optics, channel coding, Huffman coding combined with low-density parity-check (LDPC) coding, and spatial offset are used for turbulence mitigation; while OAM multiplexing and wavelength-division multiplexing (WDM) are applied to boost channel capacity.

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