Orthogonal frequency division multiplexing for mitigation of optical fiber channel impairments

2021 ◽  
Author(s):  
Usha Choudhary ◽  
Vijay Janyani
Keyword(s):  
Optical Fiber ◽  
Orthogonal Frequency Division Multiplexing ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Fiber Channel

Modeling and spectral analysis of high speed optical fiber communication with orthogonal frequency division multiplexing

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Demissie Jobir Galmecha ◽  
Bekele Tesema Hora ◽  
Ram Sewak Singh
Keyword(s):  
Optical Fiber ◽  
Optical Communication ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Direct Detection ◽  
Coherent Detection ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Transmission Systems ◽  
Data Rates

Abstract Optical communication has emerged as the best solution to high-speed transmission systems due to its higher bandwidth and higher data rates. The higher data rates with simple transmitter and receiver modeling are one of the best solutions to design the spectrally efficient high-speed optical transmission system using different modulation techniques. In the recent past, optical communication networks have been specifically designed and optimized to support different communication standards increasing the capabilities of optic fiber, integrated waveguides, and related optical fiber hardware, and signal conditioning circuits. So, this research paper presents a study, modeling, simulation, and analysis of optical performance under different transmission systems which are considered in a practical high-speed design using orthogonal frequency division multiplexing (OFDM). This can be done by using both coherent detection OFDM and direct detection OFDM to minimize dispersion effects in optical communication because OFDM is basic for modern technology to increase the data rate and increase the requirement of bandwidth in broadband services. Many optical fiber problems, such as chromatic dispersion (CD) and polarization mode dispersion (PMD) are solved using OFDM. The performance analyses made in this work by using different parameters such as bit error rate (BER), optical signal-to-noise ratio (OSNR), quality (Q) factor at different distance transmission by using different quadrature modulation such as 4-QAM, 16-QAM, 32-QAM, and 64-QAM to maintain the OSNR value, spectral efficiency, and the required data rates. The simulated results have shown that the coherent detection OFDM and direct detection OFDM with considered QAM provides the best value of BER and quality of the signal at a specific distance.

scholarly journals Reduction of Phase-Modulation to Intensity-Modulation Conversion Noise Effect Using Delayed Self-Homodyne Optical Orthogonal Frequency Division Multiplexing System

2021 ◽  
Vol 13 (1) ◽  
pp. 1-17
Author(s):  
Younus Nidham Ali Mandalawi ◽  
Syamsuri Yaakob ◽  
Wan Azizun Wan Adnan ◽  
Raja Syamsul Azmir Raja Abdullah ◽  
Mohd Hanif Yaacob ◽  
...  
Keyword(s):  
Phase Modulation ◽  
Orthogonal Frequency Division Multiplexing ◽  
Intensity Modulation ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Noise Effect
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