Design of 16 × 40 Gbps hybrid PDM-WDM FSO communication system and its performance comparison with the traditional model under diverse weather conditions of Bangladesh

Choyon, A. K. M. Sharoar Jahan; Chowdhury, Ruhin

doi:10.1515/joc-2020-0247

Cited by 17 publications

(4 citation statements)

References 24 publications

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“…The result is a shimmering or flickering effect that can lead to signal fading and even momentary sig-TABLE 1. Refractive index structure coefficients for the different turbulent channels [25,26]. nal loss.…”

Section: Overview Of Atmospheric Turbulencementioning

confidence: 99%

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Harnessing Polarization Diversity for Enhanced Reliability in Free Space Optical Communications

Tou,

Driz,

Fassi

et al. 2024

PIER C

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This article delves into the strategic application of polarization diversity in Free-Space Optical (FSO) communication systems. With the overarching aim of optimizing data transmission and bolstering reliability, the paper explores the utilization of diverse polarization orientations to navigate the challenges posed by varying atmospheric conditions. By transmitting identical data streams through different polarization states, the impact of atmospheric turbulence is effectively mitigated, leading to enhanced signal quality and system dependability. This article sheds light on the theoretical underpinnings and simulation modeling of harnessing polarization diversity in FSO communication. The simulations conducted in this study using OptiSystem software ver. 17 demonstrate the effectiveness of this approach in mitigating the adverse impacts of atmospheric turbulence. Notably, the results consistently indicate that the integration of polarization diversity leads to lower Bit Error Rates (BERs) across a spectrum of turbulence conditions. Furthermore, the proposed FSO system exhibits a remarkable ability to sustain robust communication capabilities over extended distances, outperforming the conventional system. Significantly, the proposed FSO system under weak, moderate, and strong turbulence conditions achieves operational distances of approximately 4250, 3750, and 3200 meters, respectively compared to conventional system, which achieves distances of 3750, 3250, and 2250 meters, respectively. This significant performance disparity underscores the potency of the proposed FSO system in overcoming the challenges of atmospheric turbulence and extending the reach of optical communication.

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Section: Overview Of Atmospheric Turbulencementioning

confidence: 99%

“…Hence, in this article, we consider the Gamma-Gamma fading channel model to describe weak-to-strong turbulence, where the PDF of Gamma-Gamma distribution of a given signal intensity I is given as [25][26][27][28]:…”

Section: Overview Of Atmospheric Turbulencementioning

confidence: 99%

Harnessing Polarization Diversity for Enhanced Reliability in Free Space Optical Communications

Tou,

Driz,

Fassi

et al. 2024

PIER C

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“…The LOS is a highly secure, easy‐to‐deploy, and license‐free application, whereas fiber optic implementation tends to be difficult 3 . Due to geographical location, extreme information transfer with increased data rates, and exposure to electromagnetic (EM) intrusion, the implementation process tends to be complex 4,5 . Sixth‐generation (6G) wireless communications have been the focus of recent studies since they will be employed in the near future.…”

Section: Introductionmentioning

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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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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“…The FSO is also optical wireless communication (OWC). The FSO is a high data rate relaying technology which requires a line of sight between transmitter and receiver [11]. FSO links have numerous advantages such as high data transmission rates, availability of ample amount of license−free spectrum, no security upgrade requirement, high modulation bandwidth, immunity to electromagnetic interference, low power consumption, low cost of deployment, and easy and quick installation process [4,16].…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Dwdmfso System Under Diverse Weather Conditions With Optimized Modulation Format

Parkash¹,

Banga²,

Kumar³

2023

IJEAST

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This paper is successfully demonstrating simulating comparison and investigation of 48 channels of dense wavelength division multiplexing free space optical (DWDM−FSO) network with a 10 GB/s data rate on each channel separated by 100 GHz frequency spacing under a clear sky, haze and light rain climate conditions. Apart from this, comparison of a series of modulation formats such as non−return to zero (NRZ), return to zero (RZ), carrier suppressed return to zero (CSRZ), Soliton pulse, and offset quadrature phase shift keying (OQPSK) have been performed and optimized the performance of the designed system with best suited modulated system. The performance of the proposed work has been evaluated in terms of bit error rate (BER), quality factor (Q), signal−to−noise ratio (SNR), received signal power and eye diagrams. It has been observed that OQPSK modulated system has shown more robust performance as compared to other line encoding techniques. The minimum simulation work reports for OQPSK modulated system have been recorded with the acceptable performance BER ≤ 10−10, Q ≥ 6 dB at the 2000 meters FSO link range.

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Design of 16 × 40 Gbps hybrid PDM-WDM FSO communication system and its performance comparison with the traditional model under diverse weather conditions of Bangladesh

Cited by 17 publications

References 24 publications

Harnessing Polarization Diversity for Enhanced Reliability in Free Space Optical Communications

Harnessing Polarization Diversity for Enhanced Reliability in Free Space Optical Communications

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

Performance Enhancement of Dwdmfso System Under Diverse Weather Conditions With Optimized Modulation Format

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