Performance of Modulating Retro-Reflector FSO Communication Systems With Nonzero Boresight Pointing Error

Saghir, Basel Mounir El; Mashade, Mohamed B. El

doi:10.1109/lcomm.2021.3066411

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…The impact of pointing errors on such MRR FSO communication systems in the presence of moderate to strong turbulence conditions was investigated in El Saghir and El Mashade (2021). Monte Carlo simulations are obtained to verify the derived average system BER, outage probability, and ergodic capacity results for the performance of the system.…”

Section: Visual Tracking Approachesmentioning

confidence: 99%

A review on pointing, acquisition, and tracking approaches in UAV-based fso communication systems

2022

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The challenge of tracking unmanned aerial vehicles (UAVs) is arising out of increasing their market and spread usage in many applications. Miscuing UAVs can lead to potential threats as they are considered an essential part of national security. One of the major issues in communication with UAVs is the enormous amount of data generated by UAVs that requires a high data rate link, making the free space optics (FSO) communication, with very high bandwidth, an appropriate choice. Consequently, current developments in UAVs have provided new horizons for establishing UAV-based FSO links. However, FSO is a narrow line of sight (LoS) technology that is highly affected by the misalignment between the transmitter and receiver. So, tracking mechanisms are of vital importance when considering UAV-based FSO communication systems. This paper addresses coarse to fine pointing, acquisition, and tracking (PAT) approaches and the recently developed tracking approaches to establish a reliable link for communication. Also, the various approaches are discussed and compared for precise alignment between the ground station and its associated UAV, highlighting their advantages and limitations. Current challenges and future research directions are addressed and integrated by combining different ideas.

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Section: Visual Tracking Approachesmentioning

confidence: 99%

A review on pointing, acquisition, and tracking approaches in UAV-based fso communication systems

2022

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“…There have been many studies on FSO communications in which a modulated retroreflector (MRR) replaces one side of the conventional FSO transceivers. In [8], the authors analyze outage probability, average bit error rate (BER), and ergodic capacity for the MRR-based FSO communications when nonzero boresight pointing error is assumed. The authors in [9], test (through analysis and simulation) the feasiblity of the FSO communication using the micro CCR array.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Passive Retro-Reflector Based Tracking in Free-Space Optical Communications With Pointing Errors

Moon

Chae

Alouini

2023

IEEE Trans. Veh. Technol.

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In this correspondence, we propose a diversityachieving retroreflector-based fine tracking system for free-space optical (FSO) communications. We show that multiple retroreflectors deployed around the communication telescope at the aerial vehicle save the payload capacity and enhance the outage performance of the fine tracking system. Through the analysis of the joint-pointing loss of the multiple retroreflectors, we derive the ordered moments of the received power. Our analysis can be further utilized for studies on multiple input multiple output (MIMO)-FSO. After the moment-based estimation of the received power distribution, we numerically analyze the outage performance. The greatest challenge of retroreflector-based FSO communication is a significant decrease in power. Still, our selected numerical results show that, from an outage perspective, the proposed method can surpass conventional methods.

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“…In [13], the BER of the MRR FSO system was analyzed over single and double Gamma-Gamma fading channels. Moreover, the outage probability, average BER and average channel capacity of the MRR FSO communication system were evaluated under different atmospheric turbulence in [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A Novel System of Mixed RF/FSO UAV Communication Based on MRR and RIS by Adopting Hybrid Modulation

et al. 2022

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In this paper, we propose a mixed radio frequency (RF)/free space optical (FSO) unmanned aerial vehicle (UAV) communication system, based on modulating retro-reflector (MRR) and reconfigurable intelligent surface (RIS), which adopts the hybrid L-ary pulse position modulation-binary phase shift keying-subcarrier intensity modulation (L-PPM-BPSK-SIM). More specifically, the RF channel follows Rayleigh distribution, while the FSO channel obeys Gamma–Gamma distribution that considers atmospheric turbulence and pointing error. For decode-and-forward (DF) relay, the MRR is installed on the UAV to reduce its weight, size, and power consumption. In particular, the RIS is used as user terminal along with the RF signal generator to achieve signal enhancement. Based on this, closed expressions for the outage probability, average bit error rate (BER) and average channel capacity of the end-to-end uplink and downlink are derived. Numerical results confirm that while the relay limitation is solved by MRR, RIS significantly reduces the outage probability and average BER as well as obviously increases the average channel capacity. Furthermore, the hybrid L-PPM-BPSK-SIM with average symbol length greater than eight can effectively improve the average BER performance of the system.

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Performance of Modulating Retro-Reflector FSO Communication Systems With Nonzero Boresight Pointing Error

Cited by 6 publications

References 12 publications

A review on pointing, acquisition, and tracking approaches in UAV-based fso communication systems

A review on pointing, acquisition, and tracking approaches in UAV-based fso communication systems

Performance Analysis of Passive Retro-Reflector Based Tracking in Free-Space Optical Communications With Pointing Errors

A Novel System of Mixed RF/FSO UAV Communication Based on MRR and RIS by Adopting Hybrid Modulation

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