Development of 32-GBaud DP-QPSK free space optical transceiver using homodyne detection and advanced digital signal processing for future optical networks

Pottoo, Sahil Nazir; Goyal, Rakesh; Gupta, Amit

doi:10.1007/s11082-020-02623-y

Cited by 16 publications

(8 citation statements)

References 25 publications

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“…A high-speed front haul system was described by the authors of the paper [13]. This system was based on 128 Gbps DP-QPSK, Digital Signal Processing (DSP), and homodyne detection.…”

Section: Related Workmentioning

confidence: 99%

Dual Polarization DQPSK ROF System with Duo Binary Precoding and Hybrid Amplification for Effective Hybrid SMF FSO Transmission Medium

2023

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This article demonstrates the utilization of a hybrid amplification technique on the transmission part of the proposed hybrid medium transmission system which includes both using Single Mode Fiber (SMF) with 60 km and Free Space Optic (FSO) with a range between 5 km and 25 km. It has included four weather situations with an investigation of the FSO medium-based system performance. The system uses 64 channels based on Dual Polarization-Differential Quadratic Phase Shift Keying (DP-DQPSK) Dense Wavelength Division Multiplexing (DWDM) for the Radio over Fiber (RoF) system using the Duo Binary coding scheme to improve the system efficiency in general and the cross-talk in particular. The investigations will include using the hybrid amplifiers of Erbium Doped Fiber Amplifier (EDFA) and Optical Amplifier (OA) for transmission. The analysis results show that using the hybrid amplification could improve the transmission to reach 25 km for light air case, meanwhile, for light haze, it could reach up to 20 km. Moderate haze could improve transmission efficiency for a distance of 7 km. Finally, for moderate rain situations, the transmission could be further improved to cover a distance of up to 5 km.

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“…A high-speed front haul system was described by the authors of the paper [13]. This system was based on 128 Gbps DP-QPSK, Digital Signal Processing (DSP), and homodyne detection.…”

Section: Related Workmentioning

confidence: 99%

Dual Polarization DQPSK ROF System with Duo Binary Precoding and Hybrid Amplification for Effective Hybrid SMF FSO Transmission Medium

2023

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“…As conventional modulation formats are limited to below 40 Gbps, it is of utmost importance to propose a modulation technique to enhance the capacity per channel. Recently, various modulation techniques have been discussed to augment the capacity of single-channel wireless systems [1][2][3][4]. But, the hybrid multi-dimensional modulation technique shows better results as it not only increases the speed of the channel but also increases the number of users [1].…”

Section: Introductionmentioning

confidence: 99%

“…Using hybrid modulation for more than one user can transmit data into a single channel using different parameters of a common signal. Several new modulation schemes, for instance: amplitude shift keying (ASK), frequency-shift keying (FSK), differential phase-shift keying (DPSK), and combined signaling like ASK-DPSK and DPSK-dark return-to-zero (DPSK-DRZ) have invited ample interest because of high spectral efficiency and channel capacity [2][3][4]. It is necessary to adopt these modulation schemes to commercialize multi-bit-per-symbol ultra-low latency optical transceiver systems.…”

Section: Introductionmentioning

confidence: 99%

Mode division multiplexing free space optics system with 3D hybrid modulation under dust and fog

Singh

Pottoo

Aly

et al. 2023

Alexandria Engineering Journal

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“…A high-speed front haul system based on 128 Gbps DP-QPSK, Digital Signal Processing (DSP), and homodyne detection has been presented previously [18]. The work was tested in good weather and on a 2.65 km FSO channel.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Hybrid Medium DP-DQPSK DWDM ROF Transmission System for Different Weather Conditions

Ehsan

Ngah

Daud

2022

Int. J. Interact. Mob. Technol.

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This document Designing system with Free-space optical (FSO) communication can supply high-speed digital data linkages to rural regions where geography, setup costs, and groundwork safety are major obstacles. Transmission impairments and space loss could be considered major challenges for handling the FSO system. This work has been designed and analyzed a system based on the combination of Dual Polarization Differential Quadrature Phase Shift Keying (DP-DQPSK) and Dense Wavelength Division Multiplexing (DWDM) using the Direct Detection (DD) technique. The proposed system has been utilized with a hybrid transmission medium of Single-Mode Fiber (SMF) with a fixed length of 60 km and FSO with varied lengths of (5, 7, and 9) km. The system was designed with Optisystem software 18 and consist of 64 channels and 14 Gbps of data rate per channel to make the system 5G communication compatible, 3.5 GHz RF electrical signals have been used to modulate the optical carrier. The channels 1,6,12, …,64 were selected as samples among all channels to be investigated and analyzed along with four different atmospheric weather conditions. Additionally, the proposed system is designed to investigate based on different weather attenuation that affected the parameters of Quality Factor (QF) and Bit Error Rate (BER). The significant advantage of the proposed system by using the DD technique, is no reference wave required. Hence, make the system become less complex and possible to be implemented and tested via different weather conditions. Results obtained indicate reverse relation between the QF and both the FSO distance and attenuation. While, BER based parameters showed a direct relation. For light air and haze, the results showed that the system have higher reliability for all the three investigated FSO distances. For the medium haze, the system has shown capability to transfer as far as 7 km. And for the rain condition, the system capability was set to 5 km.

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Development of 32-GBaud DP-QPSK free space optical transceiver using homodyne detection and advanced digital signal processing for future optical networks

Cited by 16 publications

References 25 publications

Dual Polarization DQPSK ROF System with Duo Binary Precoding and Hybrid Amplification for Effective Hybrid SMF FSO Transmission Medium

Dual Polarization DQPSK ROF System with Duo Binary Precoding and Hybrid Amplification for Effective Hybrid SMF FSO Transmission Medium

Mode division multiplexing free space optics system with 3D hybrid modulation under dust and fog

Design and Implementation of Hybrid Medium DP-DQPSK DWDM ROF Transmission System for Different Weather Conditions

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