基于室内可见光的混合通信系统研究与设计
发布时间：2024-12-20 21:39
过去的十年间,多媒体设备的更新换代促进着室内无线通信技术的发展。自2013以来,Wi-Fi(无线保真)连接技术迅猛发展,每天有超过50亿台的设备连接到了 Wi-Fi,致使系统严重超负荷运行。大量的无线设备使用会导致无线电频谱的过度消耗。目前的无线通信标准将无法满足未来十年室内无线通信流量的巨大需求。如今,Wi-Fi占据着全球60%的流量,物联网通信安全和频谱拥挤将会是未来通信发展所面临的两大挑战。因此,我们迫切需要一种经济、安全面快速的无线通信媒介。值得引人注意的是,可见光通信所提供的频谱可以是无线电频谱的几千倍。利用可见光进行室内通信,可以解决频谱拥挤的挑战和对高速传播媒介的需求。实践证明,通过可见光通信方式可以使得用户在网络拥挤的情况下依然能达到数百MB的数据传播速率。德国物理学家Harald Haas教授引入了一种新的技术,称之可见光无线通信(Li-Fi)。Li-Fi(光照上网技术)是一种无线通信系统,利用可见光代替传统的无线射频Wi-Fi作为信号载体。Li-Fi是一种利用发光二极管无线传输数据的技术。Li-Fi目前也是最具前景的一项技术之一,它能实现高速率和高容量地进行通信。这与...
【文章页数】：116 页
【学位级别】：博士
【文章目录】：
摘要
ABSTRACT
List of Notations
Chapter 1 Introduction
1.1 Overview
1.2 Radio Frequency Communication
1.3 Optical Communication
1.4 Hybrid System
1.5 Statement of Problem
1.5.1 Problem 1
1.5.2 Problem 2
1.6 Statement of Purpose
1.6.1 Methodology
1.6.2 Contribution
1.6.3 Optiwave System Tool
1.6.4 Modeling and Experiments
1.6.5 Limitations
1.7 Dissertation Outline
Chapter 2 Indoor Visible Light Communication
2.1 Overview
2.2 Background
2.3 VLC for Indoor Communication
2.4 Opportunities and Limitations
2.4.1 Applications
2.4.2 Limitations
2.5 Light Fidelity and Wireless Fidelity Comparison
2.6 Summary
Chapter 3 Radio-over-Fiber System
3.1 Overview
3.1.1 Direct Modulation
3.1.2 External Modulation
3.2 Radio over Fiber Link Configuration
3.2.1 Radio Frequency over Fiber
3.2.2 Intermediate Frequency over Fiber
3.2.3 Baseband over Fiber
3.2.4 Millimetre-wave Signal Generation
3.2.5 Applications
3.3 Radio over Fiber System-level Analysis
3.3.1 Encoding Formats
3.3.2 PIN and APD Photodiodes
3.4 Simulation
3.4.1 Conclusion
3.5 Future Multifunctional RoF Home Network
3.5.1 Fiber to the Home (FTTH)
3.5.2 Multi frequency RoF System Design
3.6 Summary
Chapter 4 Digital Coherent Integration with Radio over Fiber
4.1 Digital Coherent System Analysis
4.1.1 DP-QPSK Transmitter
4.1.2 Digital Coherent Optical Receiver
4.1.3 Optical Integration Technology
4.1.4 Digital Signal Processing in a Coherent Receiver
4.2 Software Implementation
4.3 Digital Coherent RoF System Analysis
4.3.1 Proposed System Design and Analysis
4.3.2 Simulation
4.4 Summary
Chapter 5 Proposed Hybrid System for Indoor VLC
5.1 Overview
5.1.1 Backhaul Connection
5.1.2 Uplink Connectivity
5.2 Proposed System Design
5.2.1 OFDM Coherent RoF
5.2.2 Modeling in OptiSystem 15
5.3 Proposed Auto Channel Switching Unit (ACSU)
5.3.1 Modeling of the Auto Channel Switching Unit (ACSU)
5.4 Feasibility Analysis
5.4.1 Technical Feasibility
5.4.2 Cost Benefits Analysis
5.5 Summary
Chapter 6 Proposed Indoor Hybrid System Modeling
6.1 Modeling of Indoor Hybrid System for VLC
6.2 VLC and RoF Indoor Downloading
6.3 Wi-Fi and RoF for Indoor Purposes
6.4 Summary
Chapter 7 Conclusion and Future Work
7.1 Conclusion
7.2 Future Work
References
Acknowledgement
Publications
Book Chapter
Peer Reviewed Journals
IEEE Proceedings
本文编号：4017898
【文章页数】：116 页
【学位级别】：博士
【文章目录】：
摘要
ABSTRACT
List of Notations
Chapter 1 Introduction
1.1 Overview
1.2 Radio Frequency Communication
1.3 Optical Communication
1.4 Hybrid System
1.5 Statement of Problem
1.5.1 Problem 1
1.5.2 Problem 2
1.6 Statement of Purpose
1.6.1 Methodology
1.6.2 Contribution
1.6.3 Optiwave System Tool
1.6.4 Modeling and Experiments
1.6.5 Limitations
1.7 Dissertation Outline
Chapter 2 Indoor Visible Light Communication
2.1 Overview
2.2 Background
2.3 VLC for Indoor Communication
2.4 Opportunities and Limitations
2.4.1 Applications
2.4.2 Limitations
2.5 Light Fidelity and Wireless Fidelity Comparison
2.6 Summary
Chapter 3 Radio-over-Fiber System
3.1 Overview
3.1.1 Direct Modulation
3.1.2 External Modulation
3.2 Radio over Fiber Link Configuration
3.2.1 Radio Frequency over Fiber
3.2.2 Intermediate Frequency over Fiber
3.2.3 Baseband over Fiber
3.2.4 Millimetre-wave Signal Generation
3.2.5 Applications
3.3 Radio over Fiber System-level Analysis
3.3.1 Encoding Formats
3.3.2 PIN and APD Photodiodes
3.4 Simulation
3.4.1 Conclusion
3.5 Future Multifunctional RoF Home Network
3.5.1 Fiber to the Home (FTTH)
3.5.2 Multi frequency RoF System Design
3.6 Summary
Chapter 4 Digital Coherent Integration with Radio over Fiber
4.1 Digital Coherent System Analysis
4.1.1 DP-QPSK Transmitter
4.1.2 Digital Coherent Optical Receiver
4.1.3 Optical Integration Technology
4.1.4 Digital Signal Processing in a Coherent Receiver
4.2 Software Implementation
4.3 Digital Coherent RoF System Analysis
4.3.1 Proposed System Design and Analysis
4.3.2 Simulation
4.4 Summary
Chapter 5 Proposed Hybrid System for Indoor VLC
5.1 Overview
5.1.1 Backhaul Connection
5.1.2 Uplink Connectivity
5.2 Proposed System Design
5.2.1 OFDM Coherent RoF
5.2.2 Modeling in OptiSystem 15
5.3 Proposed Auto Channel Switching Unit (ACSU)
5.3.1 Modeling of the Auto Channel Switching Unit (ACSU)
5.4 Feasibility Analysis
5.4.1 Technical Feasibility
5.4.2 Cost Benefits Analysis
5.5 Summary
Chapter 6 Proposed Indoor Hybrid System Modeling
6.1 Modeling of Indoor Hybrid System for VLC
6.2 VLC and RoF Indoor Downloading
6.3 Wi-Fi and RoF for Indoor Purposes
6.4 Summary
Chapter 7 Conclusion and Future Work
7.1 Conclusion
7.2 Future Work
References
Acknowledgement
Publications
Book Chapter
Peer Reviewed Journals
IEEE Proceedings
本文编号：4017898
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