scholarly journals Proposed Different Signal Processing Tools for Efficient Optical Wireless Communications

2022 ◽  
Vol 71 (2) ◽  
pp. 3293-3318
Author(s):  
Hend Ibrahim ◽  
Abeer D. Algarni ◽  
Mahmoud Abdalla ◽  
Walid El-Shafai ◽  
Fathi E. Abd El-Samie ◽  
...  
Keyword(s):  
Signal Processing ◽  
Wireless Communications ◽  
Optical Wireless ◽  
Optical Wireless Communications

scholarly journals Investigation of the Scattering Noise in Underwater Optical Wireless Communications

Sci ◽  
2021 ◽  
Vol 3 (2) ◽  
pp. 27
Author(s):  
Behnaz Majlesein ◽  
Asghar Gholami ◽  
Zabih Ghassemlooy
Keyword(s):  
Wireless Communications ◽  
Optical Wireless ◽  
Clear Water ◽  
Optical Wireless Communications ◽  
Channel Bandwidth ◽  
Phase Variations ◽  
Transmission Link ◽  
Channel Dependent ◽  
First Time ◽  
Scattering Noise

In underwater optical wireless communications (UOWC), scattering of the propagating light beam results in both intensity and phase variations, which limit the transmission link range and channel bandwidth, respectively. Scattering of photons while propagating through the channel is a random process, which results in the channel-dependent scattering noise. In this work, we introduce for the first time an analytical model for this noise and investigate its effect on the bit error rate performance of the UOWC system for three types of waters and a range of transmission link spans. We show that, for a short range of un-clear water or a longer range of clear water, the number of photons experiencing scattering is high, thus leading to the increased scattering noise. The results demonstrate that the FEC limit of 3×10−3 and considering the scattering noise, the maximum link spans are 51.5, 20, and 4.6 m for the clear, coastal, and harbor waters, respectively.

Efficient Line Coding for Low-Power Optical Wireless Communications

2021 ◽  
Author(s):  
Malte Hinrichs ◽  
Benjamin Poddig ◽  
Markus Nolle ◽  
Peter Hellwig ◽  
Ronald Freund ◽  
...  
Keyword(s):  
Wireless Communications ◽  
Low Power ◽  
Optical Wireless ◽  
Optical Wireless Communications
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