Visible Light Communications: Applications and Research Advances

✍ Scribed by Ajit Kumar Nishant Sharan, Swapan Kumar Ghorai

• Publisher: Nova Science Publishers
• Year: 2023
• Tongue: English
• Leaves: 204
• Series: Electronics and Telecommunications Research
• Category: Library

✦ Synopsis

This book examines an indoor visible light communication system in detail. The indoor VLC system's transmitter, indoor channel, and receiver are all investigated. The effect of LED and PD spatial separation on multipath channel BER performance has been studied. In addition, the effect of different LED radiation patterns on the BER performance of a multipath indoor VLC system has been evaluated. The BER and frequency response of an OFDM-based integrated PLC-VLC system were examined for various room sizes. The BER, sum rate, and outage probability of the downlink multipath multi-user NOMA-VLC system were probed using various LED semi-angle and power allocation coefficient values. Furthermore, LED nonlinearity mitigation in a NOMA-OFDM VLC system has been proposed and tested using a combination of Precoder and Companding. Besides, a hybrid combination of TDMA and cooperative NOMA system for an integrated RF/VLC system based on SWIPT has been suggested to reduce SIC complexity. Finally, a concave-convex lens for MIMO visible light communication (VLC) systems that provides more received power than conventional lenses has been proposed.

✦ Table of Contents

Contents
List of Figures
List of Tables
Preface
Prerequisite
Approach
Organization of the Book
Contact
Acknowledgements
Abbreviations
Chapter 1
Introduction
1.1. Brief History of Communication System
1.2. Introduction to VLC
1.3. Architecture of VLC Model
Transmitter
Channel
Receiver
1.4. Advantages of VLC system
1.5. Applications of VLC System
1.6. Challenging aspects of VLC system
Chapter 2
BER Analysis of a Multipath MIMO-VLC System with Various Source and Receiver Configurations
2.1. Introduction
2.2. LC Model for Indoors
2.3. Results and Discussion
2.3.1. Case 1: The Separation between PDs Is Altered Using Fixed LEDs
2.3.2. Case 2: The Separation between LEDs Is Varied While the PDs Remain Constant
2.3.2.1. Effect of LED Separation on the Impulse Response
2.3.2.2. Effect of LED Separation on RMS Delay Spread
2.3.2.3. Effect of LED Separation on BER Performance
2.3.2.4. Effect of LED Separation on the Bit Rate
2.4. Conclusion
Chapter 3
BER Performance Comparison in a Multipath MIMO-VLC System with Different LED Radiation Patterns
3.1. Introduction
3.2. Indoor Geometrical Multipath Model
3.3. Different Radiation Patterns of LED
3.2.1. Symmetrical Radiation Pattern
3.3.2. Non-Symmetrical Radiation Pattern
3.4. Results and Discussion
3.4.1. Ceiling-Mounted Layout Case
3.4.1.1. Impulse Response due to LOS and NLOS Signals
3.4.1.2. Channel Gain Distribution on the Floor
3.4.1.3. BER Performance
3.4.2. Wall-Mounted Layout Case
3.4.2.1. Impulse Responses in Wall-Mounted Layout
3.4.2.2. Channel Gain Distribution on the Floor in Wall-Mounted Layout
3.4.2.3. BER Performance in Wall-Mounted Layout
3.5. Conclusion
Chapter 4
BER Investigation for an OFDM-Based Hybrid PLC-VLC System
4.1. Introduction
4.2. The Architecture of HPMV System
4.3. The Frequency Response of the Integrated PLC-VLC System
4.4. Results and Discussion
4.4.1. BER Performance of Integrated System for Configuration A
4.4.2. BER Performance of Integrated System for Configuration B
4.5. Experimental Demonstration of Integrated PLC-VLC
4.6. Conclusion
Chapter 5
Downlink Multipath Multi-User NOMA-VLC System Performance Analysis
5.1. Introduction
5.2. NOMA-VLC Multipath Downlink Model
5.3. NOMA-VLC System Principle
5.4. Results and Discussion
5.4.1. BER Performance Analysis
5.4.2. Sum Rate Analysis
5.4.3. Outage Performance Analysis
5.5. Conclusion
Chapter 6
Mitigation of LED Nonlinearity in a NOMA-OFDM VLC System Using a Union of Precoder and Companding
6.1. Introduction
6.2. Proposed NOMA DCO-OFDM Model
6.3. PAPR Computation
6.4. Proposed Receiver
6.4.1. Theoretical Assessment of the NOMA DCO-OFDM System Proposed
6.5. Results and Discussion
6.6. Conclusion
Chapter 7
SWIPT Integrated VLC/RF System Performance Evaluation Using the Hybrid-OMA-Cooperative-NOMA Scheme
7.1. Introduction
7.2. Related Work
7.3. Contributions
7.4. Structure
7.5. Model of the System
7.5.1. Proposed System Model
7.5.2. VLC and RF Channel Model
7.5.3. Transmission and User Pairing Scheme
7.5.4. Relay Transmission and Energy Harvesting
7.6. Results and Discussion
7.7. Conclusion
Chapter 8
Concave-Convex Lens with High Gain and Volume Efficiency for MIMO-VLC Systems
8.1. Introduction
8.2. Concave-Convex Lens Architecture
8.2.1. The Design of Concave-Convex Lens
8.3. Results and Discussion
8.3.1. Ray Trajectories Using Different Types of Lenses
8.3.2. Power Received Using Concave-Convex and Other Lenses
8.4. Conclusion
Chapter 9
Conclusion and Future Scope
9.1. Conclusion
9.2. Future Scope
References
Index
About the Authors
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