Performance analysis of 4QAM-OFDM-FSO link under rain weather conditions
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Saruchi Attri
und
Daljeet Kaur
Abstract
Free space optical communication (FSO) is a technique based on transmission of data by propagating the light in free space. FSO is inexpensive, providing high data rates, high capacity, high security, and low power and uses the license free frequency spectrum. Nevertheless, FSO is still facing many problems such as bad weather conditions, atmospheric turbulence, and multipath fading. In this research work, orthogonal frequency division multiplexing (OFDM) FSO system is analyzed for low to heavy rain fall intensities. Different rain rates have been considered for low, moderate, heavy, very heavy, and torrential rains. For all the rain rates, a direct detection OFDM–FSO system and a coherent detection system have been simulated and results are compared. Analysis has been done on the basis of SNR, received power, and constellation diagrams. According to these parameters, link length of both the systems for different rain rates was found. Coherent detection is applied to improve the system sensitivity compared to conventional direct detection. In tropical regions where heavy rainfall is the main reason for the degradation of the system, the OFDM system with coherent detection can perform better with high data rates. Second, over a 11 km FSO, a 4-QAM wireless signal is successfully transmitted under very heavy rainfall conditions. The distance achieved by moderate and heavy rains is 25 km and 15.5 km with an acceptable SNR of 25 dB and a system sensitivity (received power) of −65.1 dBm.
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Research ethics: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors have no competing interests.
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Research funding: None declared.
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Data availability: Not applicable.
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© 2024 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Amplifiers
- Comparative study of single pump all optical fiber amplifiers (POAs) with ultra wide band and high gain fiber optic parametric amplifiers in highly nonlinear fibers
- Dense wavelength division multiplexing scheme based on effective distributed inline light fiber Raman amplifier configuration
- Four wave mixing, average amplified spontaneous emission, and channel spacing effects on the optical transceiver systems based on multi pumped Raman amplifiers
- High efficient net gain and low noise figure based vertical cavity semiconductor optical amplifiers for wavelength division multiplexing applications
- Hybrid pumped laser sources based hybrid traveling wave SOA and optical EDFA amplifies for signal quality improvement
- Devices
- The effect of misalignment on the coupling optics involving laser diode and single-mode triangular index fiber with an upside down tapered hyperbolic microlens on its tip
- Fibers
- Investigation of hybrid chalcogenide photonic crystal fiber for MIR supercontinuum generation and optical communication
- Verified of leakage loss, birefringence, nonlinear parameters and total number of modes in silica/silica doped and plastic fibers for fiber system efficiency improvement
- Total losses and dispersion effects management and upgrading fiber reach in ultra-high optical transmission system based on hybrid amplification system
- Various graded index plastic optical fiber performance signature capability with the optimum dispersion control for indoor coverage applications
- Lasers
- Optically injected quantum dot lasers and its complex dynamics
- Light emitting diode and laser diode system behaviour description and their performance signature measurements
- Networks
- Spectrum fragmentation-aware dynamic network slicing deployment in computing power networks based on elastic optical networks
- Investigation of 16 × 10 Gbps mode division multiplexed enabled integrated NGPON–FSO architecture under wired-wireless link losses
- Systems
- Free space optical communication system: a review of practical constraints, applications, and challenges
- High modulation effects on hybrid optical fiber links and OWC Channel based on optical DP-QSK transceiver systems
- Optical communication enhanced IDMBOC for maximizing backhaul-effect & maintaining optimum cell sizes
- Mitigating attenuation effects in free-space optics using WDM under variable atmospheric conditions
- Performance analysis of variable-gain amplify and forward relayed hybrid FSO/VLC communication system
- Wavelength division multiplexing of free space optical system under the effect of oil fire smoke
- A hybrid approach combining OFC and FSO for multichannel connectivity
- Performance analysis of 4QAM-OFDM-FSO link under rain weather conditions
- Exploring FSO link performance in varied atmospheric conditions to optimize 5G communication with a polarized quasi-diffuse transmitter
- Transmitter diversity and OAM incorporated 40 Gbps free space optical system
- Minimization of dispersion and non-linear effects in WDM based long-haul high capacity optical communication systems
- Retraction
- Retraction of: 76 articles published in Journal of Optical Communications
Artikel in diesem Heft
- Frontmatter
- Amplifiers
- Comparative study of single pump all optical fiber amplifiers (POAs) with ultra wide band and high gain fiber optic parametric amplifiers in highly nonlinear fibers
- Dense wavelength division multiplexing scheme based on effective distributed inline light fiber Raman amplifier configuration
- Four wave mixing, average amplified spontaneous emission, and channel spacing effects on the optical transceiver systems based on multi pumped Raman amplifiers
- High efficient net gain and low noise figure based vertical cavity semiconductor optical amplifiers for wavelength division multiplexing applications
- Hybrid pumped laser sources based hybrid traveling wave SOA and optical EDFA amplifies for signal quality improvement
- Devices
- The effect of misalignment on the coupling optics involving laser diode and single-mode triangular index fiber with an upside down tapered hyperbolic microlens on its tip
- Fibers
- Investigation of hybrid chalcogenide photonic crystal fiber for MIR supercontinuum generation and optical communication
- Verified of leakage loss, birefringence, nonlinear parameters and total number of modes in silica/silica doped and plastic fibers for fiber system efficiency improvement
- Total losses and dispersion effects management and upgrading fiber reach in ultra-high optical transmission system based on hybrid amplification system
- Various graded index plastic optical fiber performance signature capability with the optimum dispersion control for indoor coverage applications
- Lasers
- Optically injected quantum dot lasers and its complex dynamics
- Light emitting diode and laser diode system behaviour description and their performance signature measurements
- Networks
- Spectrum fragmentation-aware dynamic network slicing deployment in computing power networks based on elastic optical networks
- Investigation of 16 × 10 Gbps mode division multiplexed enabled integrated NGPON–FSO architecture under wired-wireless link losses
- Systems
- Free space optical communication system: a review of practical constraints, applications, and challenges
- High modulation effects on hybrid optical fiber links and OWC Channel based on optical DP-QSK transceiver systems
- Optical communication enhanced IDMBOC for maximizing backhaul-effect & maintaining optimum cell sizes
- Mitigating attenuation effects in free-space optics using WDM under variable atmospheric conditions
- Performance analysis of variable-gain amplify and forward relayed hybrid FSO/VLC communication system
- Wavelength division multiplexing of free space optical system under the effect of oil fire smoke
- A hybrid approach combining OFC and FSO for multichannel connectivity
- Performance analysis of 4QAM-OFDM-FSO link under rain weather conditions
- Exploring FSO link performance in varied atmospheric conditions to optimize 5G communication with a polarized quasi-diffuse transmitter
- Transmitter diversity and OAM incorporated 40 Gbps free space optical system
- Minimization of dispersion and non-linear effects in WDM based long-haul high capacity optical communication systems
- Retraction
- Retraction of: 76 articles published in Journal of Optical Communications
