Performance Analysis of Duobinary and CSRZ Modulation Based Polarization Interleaving for High-Speed WDM-FSO Transmission System

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhenlei Zhou ◽  
Haiguang Zhang ◽  
Chun Lin ◽  
Abhishek Sharma
Keyword(s):  
Wavelength Division Multiplexing ◽  
Bit Error Rate ◽  
Optical Communications ◽  
High Speed ◽  
Transmission System ◽  
Free Space Optical ◽  
Wavelength Division ◽  
Simulation Results ◽  
Pi System ◽  
Ber Performance

AbstractIn this paper, the bit error rate (BER) performance of Duobinary (DB) is compared with carrier-suppressed return-to-zero (CSRZ) based polarization interleaving (PI) schemes for high-speed transmission system. The system is integrated with wavelength-division multiplexing (WDM) scheme and PI scheme for free space optical communications (FSO). The simulation results show that DB offers betters BER performance compared to CSRZ in high-speed WDM-FSO-PI system.

Performance Analysis of Duobinary and AMI Techniques Using LG Modes in Hybrid MDM-WDM-FSO Transmission System

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhenlei Zhou ◽  
Erkai Li ◽  
Haiguang Zhang
Keyword(s):  
Performance Analysis ◽  
Wavelength Division Multiplexing ◽  
Bit Error Rate ◽  
Error Rate ◽  
Optical Communications ◽  
Free Space Optical ◽  
Wavelength Division ◽  
Mode Division Multiplexing ◽  
Simulation Results ◽  
Ber Performance

AbstractThis work is focused on transmission of duobinary and alternate mark inversion (AMI) modulation, adopting mode division multiplexing (MDM) of Laguerre Gaussian (LG) modes has been capitalized in wavelength division multiplexing (WDM) system, resulting in a 1.6 Gbps eight-channel free space optical communications (FSO) system. The simulation results show that duobinary offers better bit error rate (BER) performance compared to AMI for proposed hybrid MDM-WDM-FSO system.

Bit Error Rate Performance Limitations Due to Raman Amplifier Induced Crosstalk in a WDM Transmission System

2017 ◽  
Vol 38 (1) ◽  
Author(s):  
F. H. Tithi ◽  
S. P. Majumder
Keyword(s):  
Pump Power ◽  
Wavelength Division Multiplexing ◽  
Bit Error Rate ◽  
Error Rate ◽  
Optical Signal ◽  
Transmission System ◽  
Raman Amplification ◽  
Wavelength Division ◽  
Channel Separation ◽  
Wdm Transmission

AbstractAnalysis is carried out for a single span wavelength division multiplexing (WDM) transmission system with distributed Raman amplification to find the effect of amplifier induced crosstalk on the bit error rate (BER) with different system parameters. The results are evaluated in terms of crosstalk power induced in a WDM channel due to Raman amplification, optical signal to crosstalk ratio (OSCR) and BER at any distance for different pump power and number of WDM channels. The results show that the WDM system suffers power penalty due to crosstalk which is significant at higher pump power, higher channel separation and number of WDM channel. It is noticed that at a BER 10

Beamforming with Kerdock Codes in LTE System for High-Speed Railway

2014 ◽  
Vol 989-994 ◽  
pp. 3556-3560
Author(s):  
Zhi Hua Yang ◽  
Lei Jun Wang ◽  
Ze Kai Fang
Keyword(s):  
Bit Error Rate ◽  
Communication System ◽  
System Performance ◽  
High Speed ◽  
High Speed Railway ◽  
Kerdock Codes ◽  
Simulation Results ◽  
Complex Multiplications ◽  
Beamforming Technique ◽  
Ber Performance

Beamforming technique based the reciprocity of LTE communication system for high-speed railway is a practical way to improve the system performance in this paper. Kerdock codes, which facilitate efficient codebook and codeword search, are implemented in the LTE system for high-speed railway as the beamforming precoding codebook. The analysis of complexity and simulation results about the communication system of the beamforming with Kerdock codes (KBF) show that the proposed KBF can eliminate complex multiplications and improve the Bit Error Rate (BER) performance at large SNR compared with the existing beamfoming communication system for high-speed railway.

High-Speed 120 Gbps AMI-WDM-PDM Free Space Optical Transmission System

2019 ◽  
Vol 40 (4) ◽  
pp. 429-433 ◽  
Author(s):  
Kamal Kishore Upadhyay ◽  
Saumya Srivastava ◽  
N. K Shukla ◽  
Sushank Chaudhary
Keyword(s):  
Wavelength Division Multiplexing ◽  
Free Space ◽  
Communication Systems ◽  
High Speed ◽  
Signal To Noise Ratio ◽  
Low Cost ◽  
Free Space Optical ◽  
Wavelength Division ◽  
Received Power ◽  
Polarization Division Multiplexing

Abstract Free space optical (FSO) communication systems are gaining high popularity from the last decade due to its various advantages such as no license spectrum, low-cost implementation etc. In this work, 160 Gbps data is transmitted over 8 km FSO link by adopting alternate mark inversion (AMI), wavelength division multiplexing (WDM) and polarization division multiplexing (PDM) schemes. The results are reported in terms of Q factor, bit error rate, signal to noise ratio, total received power and eye diagrams.

scholarly journals Performance Evaluation of Different Optical Amplifiers in Spectrum Sliced Free Space Optical Link

2019 ◽  
Vol 41 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Aditi Thakur ◽  
Shaina Nagpal
Keyword(s):  
Wavelength Division Multiplexing ◽  
Free Space ◽  
High Speed ◽  
Optical Amplifiers ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Free Space Optical ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Space Optics

Abstract Free space optics (FSO) is well-competent and premier technology to cater the high speed services in different geographical areas such as hilly areas and inter building network. In this paper, we successfully demonstrated the spectrum sliced wavelength division multiplexed FSO system. In order to make system bandwidth efficient, frequency spacing of 75 GHz is taken among the wavelength division multiplexing (WDM) channels. Carrier spectrum broadening is achieved for spectrum slicing through the nonlinearity called self-phase modulation. Moreover, requirement of multiple laser sources is eliminated. However, in conventional WDM systems, n numbers of lasers are needed to generate n WDM channels. To strengthen the signal in this FSO system, three optical amplifiers are scrutinized such as erbium-doped fiber amplifier (EDFA), semiconductor optical amplifier (SOA) and Raman amplifier in terms of Q-factor and bit error rate (BER). Results revealed that EDFA is best amplifier in proposed SS-WDM-FSO system.

scholarly journals Performance analysis and modeling:  atmospheric turbulence and crosstalk of WDM-FSO network

2021 ◽  
Author(s):  
Ebrahim E. Elsayed
Keyword(s):  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
High Speed ◽  
Access Network ◽  
Pulse Position Modulation ◽  
Free Space Optical ◽  
Beam Spreading ◽  
Wavelength Division ◽  
Digital Pulse ◽  
Amplified Spontaneous Emission Noise

Abstract A wavelength division multiplexing (WDM) access network using high-speed free-space optical (FSO) communication for the distribution link is proposed. This Paper investigates terrestrial atmospheric of WDM-FSO communication systems operating under the influence of turbulence-induced scintillation, beam spreading, optical interchannel crosstalk, amplified spontaneous emission noise and pointing errors.On-off keying-non–return-to-zero and digital pulse position modulation are the modulation schemes used for the calculations.

scholarly journals Performance analysis and modeling: atmospheric turbulence and crosstalk of WDM-FSO network

2021 ◽  
Author(s):  
Ebrahim E. Elsayed
Keyword(s):  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
High Speed ◽  
Access Network ◽  
Pulse Position Modulation ◽  
Free Space Optical ◽  
Wavelength Division ◽  
Pointing Errors ◽  
Digital Pulse ◽  
Amplified Spontaneous Emission Noise

Abstract A wavelength division multiplexing (WDM) access network using high-speed free-space optical (FSO) communication for the distribution link is proposed. This Paper investigates terrestrial atmospheric of WDM-FSO communication systems operating under the influence of turbulence-induced scintillation, beam spreading, optical interchannel crosstalk, amplified spontaneous emission noise and pointing errors. On-off keying-non–return-to-zero and digital pulse position modulation are the modulation schemes used for the calculations.

High Speed 2 × 10 Gbps WDM Enabled Inter-Satellite Optical Wireless Communication Link

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Veena Kumari Thappa ◽  
Bindu Sharma ◽  
Abhishek Sharma
Keyword(s):  
Wireless Communication ◽  
Wavelength Division Multiplexing ◽  
Bit Error Rate ◽  
Error Rate ◽  
High Speed ◽  
Communication Link ◽  
Q Factor ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
Wavelength Division

AbstractTransmission of data between satellites has been revolutionized via the use of Inter-satellite optical wireless communication (Is-OWC). In this work, we evaluate the validation of high speed and long reach Is-OWC system suing return-zero encoding and wavelength division multiplexing. Two channels, each carrying 10 Gbps of information transmits data on Is-OWC link of 2200 Km length. The performance of the proposed system is investigates in terms of bit-error rate, Q-factor and eye patterns.

Erbium/Ytterbium-Doped Waveguide Amplifier (EYDWA) for extended reach of Wavelength Division Multiplexing based free space optics system (WDM/FSO)

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Bentahar Attaouia ◽  
Kandouci Malika ◽  
Ghouali Samir
Keyword(s):  
Wavelength Division Multiplexing ◽  
Free Space ◽  
Cost Effective ◽  
Weather Conditions ◽  
Free Space Optical ◽  
Wavelength Division ◽  
Space Optics ◽  
Effective Implementation ◽  
Transmission Distance ◽  
The Cost

AbstractThis work is focused to carry out the investigation of wavelength division multiplexing (WDM) approach on free space optical (FSO) transmission systems using Erbium Ytterbium Doped Waveguide Amplifier (EYDWA) integrated as post-or pre-amplifier for extending the reach to 30 Km for the cost-effective implementation of FSO system considering weather conditions. Furthermore, the performance of proposed FSO-wavelength division multiplexing (WDM) system is also evaluated on the effect of varying the FSO range and results are reported in terms of Q factor, BER, and eye diagrams. It has been found that, under clear rain the post-amplification was performed and was able to reach transmission distance over 27 Km, whereas, the FSO distance has been limited at 19.5 Km by using pre-amplification.

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