Single side-band orthogonal frequency division multiplexing signal transmission in RF carrier allocated visible light communication

AbstractRadio over fiber is a technology in which the light signals at the central station are modulated by a radio frequency signal, and by using the optical fiber it is transmitted to base stations. The data stream being sent is separated into subcarrier frequencies by the technique of orthogonal frequency division multiplexing. The orthogonality between the sub-carriers is provided by FFT modulation, which avoids the demodulators from accepting other frequencies. It is possible to transmit high-data rate signals over short and long distance by implementing orthogonal frequency division multiplexing with radio over fiber system along with the optical fiber. This enhances the system with more coverage area, and without increasing the cost of the system it provides the flexibility. The proposed work is to investigate the performance analysis of single side band orthogonal frequency division multiplexing in radio over fiber system with external and direct modulations using spectral analysers and constellation visualizers. The Mach-Zender modulator is proposed for external modulation, the vertical cavity surface emitting laser is used in direct modulation. The simulations were carried out by using Optisystem Software version 15.0 with global parameters for both intensity modulation schemes.

Download Full-text

Performance of DC‐Biased Optical Orthogonal Frequency Division Multiplexing in Visible Light Communication

AI and IoT‐Based Intelligent Automation in Robotics ◽

10.1002/9781119711230.ch21 ◽

2021 ◽

pp. 339-354

Author(s):

S. Ponmalar ◽

J.J. Shiny

Keyword(s):

Visible Light ◽

Orthogonal Frequency Division Multiplexing ◽

Visible Light Communication ◽

Frequency Division Multiplexing ◽

Frequency Division

Download Full-text

Hybrid space-frequency domain pre-equalization for DC-biased optical orthogonal frequency division multiplexing based imaging multiple-input multiple-output visible light communication systems

Optical Engineering ◽

10.1117/1.oe.56.3.036102 ◽

2017 ◽

Vol 56 (3) ◽

pp. 036102

Author(s):

Chen Chen ◽

Wen-De Zhong

Keyword(s):

Visible Light ◽

Communication Systems ◽

Orthogonal Frequency Division Multiplexing ◽

Multiple Input Multiple Output ◽

Visible Light Communication ◽

Frequency Division Multiplexing ◽

Frequency Division ◽

Multiple Input ◽

Input Multiple Output ◽

Space Frequency

Download Full-text

Dynamic Hyperchaotic Key Generation Using Optical Orthogonal Frequency Division Multiplexing-based Visible Light Communication Networks

10.21203/rs.3.rs-499286/v1 ◽

2021 ◽

Author(s):

Mohammed Alresheedi ◽

YAHYA AL-MOLIKI ◽

Yahya Al-Harthi ◽

Ali Alqahtani

Keyword(s):

Visible Light ◽

Communication Networks ◽

Orthogonal Frequency Division Multiplexing ◽

Average Power ◽

Visible Light Communication ◽

Frequency Division Multiplexing ◽

Key Generation ◽

Frequency Division ◽

Degree Of Protection ◽

Communication Time

Abstract This paper introduces an optical orthogonal frequency division multiplexing (OFDM)-based hyperchaotic key generation encryption approach that can improve confidentiality in visible light communication (VLC) networks. Using a hyperchaotic four-dimensional method, the bipolar real-valued OFDM signal can be used for constructing dynamic cypher keys modified at every frame over the communication time, resulting in a superior degree of protection against statistical and correlation attacks. In accordance with our findings, this approach decreases the ratio of peak-to-average power of the transmitted signal, and enhances the bit error rate efficiency and secrecy capacity of the OFDM-based VLC network, which improves confidentiality.

Download Full-text