BER Analysis of PolSK Modulation for FSO Communication System with Generalized Pointing Error over Double GG Turbulence Channel

2021 ◽  
Author(s):  
Piyush Jain ◽  
N Jayanthi ◽  
M Lakshmanan ◽  
Tushar Sharma ◽  
Siddharth Saini ◽  
...  
Keyword(s):  
Communication System ◽  
Pointing Error ◽  
Polsk Modulation ◽  
Ber Analysis

scholarly journals Performance Improvement for Mixed RF–FSO Communication System by Adopting Hybrid Subcarrier Intensity Modulation

2019 ◽  
Vol 9 (18) ◽  
pp. 3724 ◽  
Author(s):  
Jiang ◽  
Zhao ◽  
Liu ◽  
Deng ◽  
Luo ◽  
...  
Keyword(s):  
Atmospheric Turbulence ◽  
Channel Capacity ◽  
Communication System ◽  
Rayleigh Distribution ◽  
Intensity Modulation ◽  
Phase Shift Keying ◽  
Free Space Optical ◽  
Pointing Error ◽  
Shift Keying ◽  
Binary Phase Shift Keying

The improvement for hybrid radio frequency–free space optical (RF–FSO) communication system in wireless optical communications has acquired growing interests in recent years, but rarely improvement is based on hybrid modulation. Therefore, we conduct a research on end-to-end mixed RF–FSO system with the hybrid pulse position modulation–binary phase shift keying–subcarrier intensity modulation (PPM–BPSK–SIM) scheme. The RF link obeys Rayleigh distribution and the FSO link experiences Gamma–Gamma distribution. The average bit error rate (BER) for various PPM–BPSK–SIM schemes has been derived with consideration of atmospheric turbulence influence and pointing error condition. The outage probability and the average channel capacity of the system are discussed as well. Simulation results indicate that the pointing error aggravates the influence of atmospheric turbulence on the channel capacity, and the RF–FSO systematic performance is improved obviously while adopting PPM–BPSK–SIM under strong turbulence and severe pointing error conditions, especially, when the system average symbol length is greater than eight.

Evaluation of inter-aircraft optical wireless communication system with different modulation formats

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Saumya Srivastava ◽  
Kamal Kishor Upadhyay ◽  
Narendra Kumar Shukla
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Signal To Noise Ratio ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
Detection Mechanism ◽  
Modulation Formats ◽  
Pointing Error ◽  
Wireless Communication System ◽  
System A

Abstract In this paper, simulative evaluation of the inter-aircraft optical wireless communication system with the use of different modulation formats like return to zero (RZ), non return to zero (NRZ) and raised cosine by signal to noise ratio (SNR) and quality factor (Q-factor). Performance parameters are attenuation level, transmitting pointing error and scintillation are used to analyse the performance of the system. Including the pre- and post-amplifier configuration in the system, a link range of 100 km is achieved at an acceptable bit error rate and the performance of the system is also enhanced at a 5 Gbps data rate as compared to the earlier detection mechanism.

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