Performance evaluation of hybrid modulation techniques for high speed radio over fiber communication system

2019 ◽  
Vol 30 (09) ◽  
pp. 1950070 ◽  
Author(s):  
R. Shantha Selva Kumari ◽  
K. Seyatha
Keyword(s):  
Phase Shift ◽  
Amplitude Modulation ◽  
Communication System ◽  
Phase Modulation ◽  
Pulse Amplitude ◽  
Q Factor ◽  
Phase Shift Keying ◽  
Fiber Communication ◽  
Received Power ◽  
Shift Keying

In Radio over Fiber (RoF) technology, the optical network capacity is integrated with the wireless network. The main objective of this work is to enhance the performance behavior of optical fiber communication system in terms of BER, Received Power and Q-Factor. The proposed combined modulation technologies, such as Pulse Amplitude Frequency Modulation (PAFM), Differential Phase Shift Keying Amplitude Modulation (DPSKA), Offset Quadrature Phase Shift Keying Amplitude Modulation (OQPSKA), Quadrature Amplitude Frequency Modulation (QAFM), Frequency Phase Modulation (FPM) and Pulse Amplitude Phase Modulation (PAPM), are used to meet this objective. The input data are used for modulating the electrical carrier signal with a frequency of 250 and 255[Formula: see text]GHz. This hybrid modulation technique obtained the minimum BER of about [Formula: see text] in FPM technique. The maximum Q-Factor of 33 is obtained in QAFM technique. The obtained maximum received power is 0.79[Formula: see text]mW in OQPSKA technique.

Performance Analysis of DQPSK Modulated RoF System

2014 ◽  
Vol 0 (0) ◽  
Author(s):  
Ramandeep Kaur ◽  
Kamaljit singh Bhatia
Keyword(s):  
Performance Analysis ◽  
Phase Shift ◽  
Communication System ◽  
Vital Role ◽  
Phase Shift Keying ◽  
Fiber System ◽  
Quadrature Phase Shift Keying ◽  
Quadrature Phase ◽  
Shift Keying ◽  
Radio Over Fiber System

AbstractAdvanced modulation schemes play a vital role for RoF communication system for different channels. Keeping into view the same, in this paper a DQPSK (Differential Quadrature Phase Shift Keying) based radio over fiber system is proposed. Appropriate value of FWHM is also concluded for faithful communication.

Performance of Phase Modulation in WDM-PON Transmission System

2015 ◽  
Vol 36 (1) ◽  
Author(s):  
Li Li ◽  
Dong Zhao
Keyword(s):  
Phase Shift ◽  
Optical Fiber ◽  
Phase Modulation ◽  
High Speed ◽  
Dispersion Compensation ◽  
Transmission System ◽  
Phase Shift Keying ◽  
Modulation Formats ◽  
Differential Phase Shift ◽  
Shift Keying

AbstractThe modulation and demodulation methods of the optical Differential Quadrature Phase Shift Keying (DQPSK), Optical Differential Phase Shift Keying (DPSK) and the different modulation formats including nonreturn-to-zero (NRZ), return-to-zero (RZ), carrier-suppressed return-to-zero (CS-RZ) are introduced, studying the ability of anti-dispersion for different optical signals in the 40 Gb/s high speed transmission system. The system is simulated in optical fiber by way of dispersion compensation. And then analyzed the compensation effect of the different dispersion compensation method for different phase modulation formats. It is shown that the ability of anti-dispersion and anti-PMD is better in the CS-RZ-DQPSK modulation format, and this format has the smallest eye-opening penalty (EOP) with a wider range of power into the optical fiber.

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