Comparative investigation of CSRZ‐DQPSK, DRZ‐DQPSK, and MDRZ‐DQPSK modulation techniques in MDM IS‐OWC system

Gill, Harpreet Kaur; Grewal, Narwant Singh; Walia, Gurjot Kaur

doi:10.1002/mop.31807

Cited by 14 publications

(5 citation statements)

References 10 publications

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“…The system has been analysis by varying the levels of input power to transmit 10 Gbps for communication up to 5000 kilometers. H. Kaur et al [24], the article displays an inclusive method of designing MDM in IS-OWC system utilizing MDRZ-DQPSK, CSRZ-DQPSK and DRZ-DQPSK modulation system. The system has 64 channels with various data rates and varied distance from 900 to 4500 km at the result shows at 10 Gbps bit rate and distance up to 4500 km the MDRZ-DQPSK modulation gives an excellent Q-factor compared to DRZ-DQPSK and CSRZDQPSK Modulation, however due to high consumption of bandwidth in data rate 40 Gbps CSRZ-DQPSK exhibits least Q-factor therefore, it preferable for long reach transmission and saves cost.…”

Section: Related Workmentioning

confidence: 99%

Numerical comparison between DPSK 33, DPSK 66 and duo binary in WOC system

Ali

Ali²,

Hassan³

2021

IJEECS

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OWC systems have turned into a state-of-the-art technology because of their superior performance uniqueness and its innumerable characteristic as compared to its RF. One of the OWC application is inter-satellite wireless optical communication (Is-WOC), this framework can be improved by using different ways such as advanced modulation formats and aperture diameter. We demonstrate an analysis based on the aperture diameter effect in transmission of single channel with 40 Gb/s Is-WOC system using three different modulation methods, differential phase-shift keying (DPSK) with a duty ratio to 66% and 33% and duobinary. Choosing these three modulations from various modulation format is done depending on the advantage they provide where the DPSK gives to fiber nonlinearity a powerful robustness and less susceptible to SPM and XPM and for system requirements of dispersion compensation in duobinary, it provides higher chromatic dispersion tolerance mitigate. The result shows the effect of different transmitter aperture diameter (from 2 to 20 cm) for a constant distance 200 km accomplished by quality factor and minimum BER. We conclude there is a great loss in the small aperture diameter, even in the presence of best modulation format, therefore as the aperture diameter increase the Q-factor increase, but some increased rise is linear and the other is changing from linear to non-linear in a fixed Q-factor point equal to 5.63.

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Section: Related Workmentioning

confidence: 99%

Numerical comparison between DPSK 33, DPSK 66 and duo binary in WOC system

Ali

Ali²,

Hassan³

2021

IJEECS

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“…While [33] studied The Monte Carlo simulations idea of a variable field of view receiver of different optical and densities types for narrow-beam in OWC, the result shows the possibility of boosting communication system effectiveness through fog in a simple and cheap way. on other hand [34] introduce insight into designing effective FSO systems that present measurement results in the southern coast of France, the conclude shows better performance and enhanced resilience.in addition, the proposed system [35] is designed for wavelength division multiplexing (WDM) using 64 channels. It is observed from the results that modified duo-binary return-to-zero-differential quadrature phase-shift keying (MDRZ-DQPSK) modulation gives excellent Q-factor compared to dark return-to-zero (DRZ)-DQPSK and carrier-suppressed return-to-zero (CSRZ)-DQPSK Modulation with data rate transmission equal to 10 Gbps in a favorable distance up to 4500 km.…”

Section: Introductionmentioning

confidence: 97%

Fog attenuation penalty analysis in terrestrial optical wireless communication-modified duo-binary return-to-zero system with various receiver pointing errors

Ali

Hassan

Abu-Alsaad

2022

IJEECS

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In metropolitan communication infrastructures a revolutionary technique is emerge known as terrestrial optical wireless communication (OWC), which makes a high-rise building connection is possible. Even with this solution, there are many other problems like the influence of haze and fog in the propagation channel which obstruct and scatter OWC propagation light and consequently led to a big attenuation, due to propagate in temporal, angular and spatial of the light signal. Not to mention the minimum visibility that discourages the implementation of the pointing errors (PE) and tracking system. This present work aims to analyze the interrelation between multiple scattering (dense fog, heavy fog, light fog, heavy haze and light haze) and receiver PE under modified duo-binary return-to-zero (MDRZ) system. We found that PE caused by beam swag is the main controlling factor and industriously minimize the link margin, signal-to-noise ratio (SNR), and raise the bit error rate (BER) when there is an increasing the turbulence strength and the track length. We recommended to guarantee transmitter– receiver alignment by installing a variable field of view (FOV) receiver (a tracking system) to overcome the scattering impact of the fog that make render urban laser communication effective in the presence of PE.

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“…Higher speeds can be obtained by correct setup and use multiple channels acting like separate wavelengths [15]. The FSO provide connection technology between satellite which is almost ideal and can connect ground to satellite links along with the terrestrial link and this is when it gets more terrible it is substantial to pick a few numbers of FSO parameters while examining FSO performance, these consideration parameters can be split in to two main parts, external parameters and internal parameters [16,17]. External parameters are related to operate system environment.…”

Section: Introductionmentioning

confidence: 99%

Analytical performance evaluation of MIMO-FSO under meteorological turbulence using link range, bit rate and transmitted power

2023

MJET

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In order to fulfill our modern world demand, Free Space Optics (FSO) is developed. And (multiple input multiple output) MIMO-FSO systems have been put in place to analysis and implement the exhaustive achievement for transfers the data in wider bandwidth and in the form of light waves to achieves higher data rate transmission using different encoding schemes executed with four various communication channels. The various meteorological turbulence such as wind, snow, fog, rain, etc significantly affected MIMO-FSO transmission medium performance as means of reception and transmission FSO system employ direct detection and intensity modulation. MIMO-FSO systems simulation has been analyzed as a function of link range, bit rate and transmitted power, however, FSO widespread growth has been restrain by reliability issues and availability. With consideration to the value of Q. Factor, Eye Diagram and BER. The Simulation results characterize that MIMO-FSO system play a good solution with meteorological turbulence. Compare to the low power and minimum distortion for long distance While maintaining reliability. The result displayed that RZ is the preferable type of modulation accommodate a large value of Q-factor. while NRZ allocate on top of Q-factor values in case in MIMO-FSO. It is precious noticing that improving the achievement of MIMO-FSO system is highly dependent on the Meteorological turbulence, specially by link range, bit rate and transmitted power. However, noting this performance increasing led to cost and complexity also increases.

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Comparative investigation of CSRZ‐DQPSK, DRZ‐DQPSK, and MDRZ‐DQPSK modulation techniques in MDM IS‐OWC system

Cited by 14 publications

References 10 publications

Numerical comparison between DPSK 33, DPSK 66 and duo binary in WOC system

Numerical comparison between DPSK 33, DPSK 66 and duo binary in WOC system

Fog attenuation penalty analysis in terrestrial optical wireless communication-modified duo-binary return-to-zero system with various receiver pointing errors

Analytical performance evaluation of MIMO-FSO under meteorological turbulence using link range, bit rate and transmitted power

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