Demo: A Unified Platform of Free-Space Optics for High-Quality Video Transmission

Jeon, Hong-Bae; Moon, Hyung-Joo; Kim, Soo-Min; Kwon, Do-Hoon; Lee, Dong Kun; Han, Sang-Kook; Chae, Chan-Byoung

doi:10.1109/wcncw48565.2020.9124814

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…Existing works on FSO communication systems have several drawbacks, including insufficient link capacity, 21 inefficient degree of polarization, 22 high BER and less SNR outcomes, 23 high error rate, less spectral efficiency, 24 less system performance, 25 high model complexity, model maintenance is risky, 26 impair wavelength stability, 27 reducing the communication range, reliability, 28 FSO linkages suffer from beam divergence, 29 and high-cost consumption 30 employed. To address the shortcomings of previous efforts, a new hybrid methodology for enhancing the spectrum efficiency and link capacity of FSO systems in 6G applications is needed.…”

Section: Related Workmentioning

confidence: 99%

“…The video signal transmissions were performed by Jeon et al 23 through a field‐programmable gate array (FPGA)‐based FSO communication system to examine the FSO link feasibility over a certain distance. A channel emulator was utilized for the effective modeling of scintillation, power attenuation, and turbulence modeling of long‐range FSO channels.…”

Section: Related Workmentioning

confidence: 99%

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An integrated design for improving spectral efficiency of FSO communication system in 6G applications

Sathish,

Mahalingam,

Padmaja

et al. 2024

Int J Communication

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SummaryIn the case of future access networks, such as 6G‐based applications, the free‐space optical communication (FSO) technology is an efficient solution. FSO in 6G is extremely popular because of its unique properties, which include ease of installation, high bandwidth, high security, license‐free long range, and interference resistance. However, environmental disturbances have a negative impact on the FSO system's functioning. Because of these atmospheric turbulences, the optical information gets restricted, which in turn reduces the link reliability, power density, and distance. This paper proposes a hybrid FSO strategy for improving system efficiency to address these problems. Signal creation is fundamental to every successful communication system. The FSO system consists of three components: the transmitter, the channel medium, and the receiver. The transmitter section includes a continuous wave laser, a Mach–Zehnder modulator, a nonreturn to zero transpose Walsh code generator, and a nonreturn to zero pulse generator. Wavelength division multiplexing‐optical code division multiple access‐spectrum slicing (WDM‐OCDMA‐SS) is used to facilitate efficient data transfer after signals have been generated by alternate mark inversion (AMI). In order to boost a weak signal, fused Raman erbium amplifiers (Fuse‐RE) are used. Q factor and log bit error rate (BER) are used to assess the performance of the suggested approach. The proposed model has obtained a log BER of −15.3291 for clear air and a Q factor of 8.2922, whereas the performances are implemented using Python. The proposed approach achieves better performance when compared to the existing methodologies.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

An integrated design for improving spectral efficiency of FSO communication system in 6G applications

Sathish,

Mahalingam,

Padmaja

et al. 2024

Int J Communication

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“…The performance metrics have been BER and PSNR. In their work, 27 Jeon et al investigated a real time video transmission over an FPGA‐based FSO communication prototype. A channel emulator to simulate turbulence and attenuation is presented.…”

Section: Literature Survey and Contributionsmentioning

confidence: 99%

Quality assessment for terrestrial digital video broadcast over optical wireless communication‐passive optical network under moderately turbulent regime with spatial diversity

Gill

Singh

et al. 2022

Int J Communication

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Summary The preceding decade has seen successful rollout of 5G and convergence of broadcast broadband and telecom sector. The near future bandwidth demands for services such as advanced immersive multimedia are even more challenging. This has led to advent of 6G. The access technologies need to provide virtually unlimited data rates to support majority of applications in 6G. The optical wireless communication (OWC) with its inherent advantages is a potential enabler in this scenario. However, phenomenon such as atmospheric turbulence poses a serious degradation to performance of such systems. For multimedia services, end user perception is the ultimate quality indicator. To ascertain this quality in quantitative terms, full reference quality metrics are employed for communication purposes. In this paper, digital video broadcasting terrestrial (DVB‐T) videos with varying complexities are transmitted over OWC‐passive optical network (PON) architecture. For performance enhancement 2 × 2 repetitive coding MIMO is employed with maximal ratio combining receiver. A total of 6 video quality assessment (VQA) metrics are evaluated for the system w.r.t channel parameter as Rytov variance. For all the VQA metrics, an enhancement in the performance is observed by using MIMO technique. This performance improvement is more prominent for more complex video as compared to less complex video. As for the limiting case BER of 10−3 gives a limiting link distance of 1350 m; however with VQA metrics, the limiting case distance is 1280 m. By the use of 2 × 2 MIMO techniques, this distance enhances by 20–25 m.

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“…Unlike radio-frequency (RF) cellular communication networks, FSO communications are one-to-one due to the high directivity of laser beams. For precise beam pointing in FSO communications then, it is imperative to have a pointing, acquisition, and tracking (PAT) system [1], [2]. The PAT system is divided into two steps-coarse pointing and fine tracking [3].…”

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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Demo: A Unified Platform of Free-Space Optics for High-Quality Video Transmission

Cited by 4 publications

References 7 publications

An integrated design for improving spectral efficiency of FSO communication system in 6G applications

An integrated design for improving spectral efficiency of FSO communication system in 6G applications

Quality assessment for terrestrial digital video broadcast over optical wireless communication‐passive optical network under moderately turbulent regime with spatial diversity

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

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