高速光通信系统中高阶信号调制技术和传输理论的研究
发布时间：2023-02-27 18:00
随着互联网、移动互联网的飞速发展,人类对信息的需求急剧膨胀,互联网流量一直处于爆炸式增长,越来越多视频流以及云计算、社交媒体和移动数据传输等对光纤通信系统网络规模、通信速率、通信容量、通信距离等提出了更高的要求,使其正朝着超高速率、超长距离、超大容量和超高频谱效率的方向发展。调制格式从使用传统的开关相移键控(OOK)逐步向更高阶的调制格式过渡。为了满足日益增长的通信容量需求,本文对光通信中所用到的先进调制格式展开了研究。本论文的主要研究内容为:1)设计了一种双偏振高阶调制格式信号产生方案,仿真分析了发射功率,传输距离及光信噪比等因素对DP-QPSK,DP-16QAM及DP-32QAM信号传输性能的影响。2)分析了不同类型的星座图性能,包括圆形16QAM、方形16QAM圆及2A8P-16QAM调制信号信噪比和误码率关系。同时,分析了交叉形32QAM、矩形32QAM和4A8P-32QAM性能。结果表明,随着信噪比的增加,误码率降低。3)研究了通过在相干接收机处使用偏振解复用,色散补偿,频率和载波相位估计来减少极化失配和信道损伤的影响。此外,阐述了在这种信道损伤下的最佳QoS参数值,如不同波...
【文章页数】：58 页
【学位级别】：硕士
【文章目录】：
abstract
摘要
DEDICATION
List of Abbreviations
Chapter1：Introduction
1.1 Background and Significance of the Study
1.2 Research Status
1.3 Challenges and Goals
1.4 Research Content
1.4.1 Higher order modulation in different Constellation
1.4.2 Dual polarization Modulation scheme
1.4.3 Polarization Mismatch effects
1.5 Thesis Outline
Chapter2：Coherent Optical Fiber Communication
2.1 Overview
2.2 Coherent Detection Principles
2.2.1 Heterodyne Detection
2.2.2 Homodyne Detection
2.2.3 Phase Diversity Detection
2.3 Higher Order Modulation
2.3.1 Dual Polarization Modulation Formats
2.3.2 Quadrature Phase Shift Keying
2.3.3 Quadrature Amplitude Modulation
2.4 Dispersion Compensation and non-linear impairments
2.5 Summary
Chapter3：Analysis of High Order Modulation Formats in Coherent OpticalCommunication System
3.1 Introduction
3.2 Scheme of DP-QPSK based on coherent optical receiver
3.3 Scheme of DP-m QAM based on coherent optical receiver
3.4 Performance analysis
3.4.1 Different Constellations of 16QAM
3.4.2 Performance of OSNR vs BER for 16QAM
3.4.3 Different constellations of 32QAM
3.4.4 Performance of OSNR vs BER for 32QAM
3.5 Summary
Chapter4：Polarization mismatch effect in DP-16 QAM and DP-QPSK
4.1 Introduction
4.2 Effect of Polarization Mismatch on System Performance
4.3 Compensation for channel impairment
4.4 Summary
Chapter5：Conclusion and Future Work
5.1 Conclusion
5.2 Future Work
References
本文编号：3751189
【文章页数】：58 页
【学位级别】：硕士
【文章目录】：
abstract
摘要
DEDICATION
List of Abbreviations
Chapter1：Introduction
1.1 Background and Significance of the Study
1.2 Research Status
1.3 Challenges and Goals
1.4 Research Content
1.4.1 Higher order modulation in different Constellation
1.4.2 Dual polarization Modulation scheme
1.4.3 Polarization Mismatch effects
1.5 Thesis Outline
Chapter2：Coherent Optical Fiber Communication
2.1 Overview
2.2 Coherent Detection Principles
2.2.1 Heterodyne Detection
2.2.2 Homodyne Detection
2.2.3 Phase Diversity Detection
2.3 Higher Order Modulation
2.3.1 Dual Polarization Modulation Formats
2.3.2 Quadrature Phase Shift Keying
2.3.3 Quadrature Amplitude Modulation
2.4 Dispersion Compensation and non-linear impairments
2.5 Summary
Chapter3：Analysis of High Order Modulation Formats in Coherent OpticalCommunication System
3.1 Introduction
3.2 Scheme of DP-QPSK based on coherent optical receiver
3.3 Scheme of DP-m QAM based on coherent optical receiver
3.4 Performance analysis
3.4.1 Different Constellations of 16QAM
3.4.2 Performance of OSNR vs BER for 16QAM
3.4.3 Different constellations of 32QAM
3.4.4 Performance of OSNR vs BER for 32QAM
3.5 Summary
Chapter4：Polarization mismatch effect in DP-16 QAM and DP-QPSK
4.1 Introduction
4.2 Effect of Polarization Mismatch on System Performance
4.3 Compensation for channel impairment
4.4 Summary
Chapter5：Conclusion and Future Work
5.1 Conclusion
5.2 Future Work
References
本文编号：3751189
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