多级幅度调制有线信号与超宽带无线信号融合传输研究
发布时间：2019-05-09 17:38
【摘要】：在单一波长信道上同时提供超宽带(ultra-wideband,UWB)无线接入业务与基带有线接入业务,可以极大的降低波分复用无源光网络(wavelength-division multiplexing passive optical network,WDM-PON)的复杂度和建设成本。由于超宽带信号占据着3.1 GHz至10.6 GHz的频谱范围,因此在0~3.1 GHz区间将产生一个狭窄的闲置频带,可以被用于传输有限比特率的基带有线信号。本文提出了两种同时传输超宽带信号与基带有线信号的方案。在第一种方案中,高阶超宽带信号被用以扩展闲置频带的宽度,并且通过采用多级脉冲幅度调制(multi-level pulse amplitude modulation,M-PAM)信号提升了有限闲置频带中的基带有线信号的比特率。在第二种机制里,使用了多带超宽带信号(multi-band ultra-wideband,MB-UWB),由于其灵活的中心频率以及较窄的频谱宽度,闲置频带的宽度得到了极大的扩展。因此,多级幅度调制信号的比特率得到了进一步的提升。与正交相移键控(quadrature phase shift keying,QPSK)、正交幅度调制(quadrature amplitude modulation,QAM)等其他适用于WDM-PON的高级调制格式相比,多级幅度调制信号可以通过强度直接检测(intensity modulation direct detection,IM-DD)进行接收,较为简单,可以极大的降低用户端的成本。在此基础上,本文主要做了如下工作:(1)阐述了基于光纤的多级幅度调制基带有线信号与超宽带无线信号融合传输技术的历史背景及研究意义,并简单阐述了多级幅度调制有线信号和超宽带信号的定义、技术特点、应用范围。(2)提出了新颖的多级幅度调制基带有线信号与超宽带无线信号融合传输系统,并详细阐述了这一系统的工作原理,包括多级幅度调制基带有线信号与超宽带无线信号的产生、融合、调制、传输、接收与恢复。(3)基于前述的实验原理,实现了2.5 Gbit/s四级幅度调制基带有线信号基带有线信号与1.25 Gbit/s四阶超宽带(quadruplet)无线信号的20千米常规单模光纤(standard single mode fiber,SSMF)无补偿融合传输系统。通过接收端测量得到的频谱、眼图以及误码率,证明了该系统具有良好的性能。(4)针对前项试验中闲置频带过窄,严重影响了基带有线信号的速率提升,为了进一步提升融合传输系统的性能,多带超宽带信号被引入融合传输系统,实现了10 Gbit/s四级幅度调制基带有线信号与1 Gbit/s多带超宽带无线信号的20千米常规单模光纤无补偿融合传输系统。通过频谱、眼图以及误码率证明了该系统不仅提升了传输能力,更提升了传输质量。
[Abstract]:Providing both ultra-wideband (ultra-wideband,UWB) wireless access service and baseband wired access service on a single wavelength channel can greatly reduce the complexity and construction cost of WDM passive optical network (wavelength-division multiplexing passive optical network,WDM-PON). Since ultra-wideband signals occupy the spectrum range from 3.1 GHz to 10.6 GHz, a narrow idle band will be generated in the 0 / 3.1 GHz range, which can be used to transmit baseband wired signals with limited bit rate. In this paper, two schemes for simultaneous transmission of ultra-broadband signal and baseband wired signal are proposed. In the first scheme, the high-order ultra-wideband signal is used to extend the width of the idle band and is modulated by a multistage pulse amplitude modulation (multi-level pulse amplitude modulation,). M-PAM) signal increases the bit rate of baseband wired signal in a limited idle frequency band. In the second scheme, multi-band ultra-wideband signal (multi-band ultra-wideband,MB-UWB) is used. Due to its flexible center frequency and narrow spectrum width, the width of idle band is greatly expanded. Therefore, the bit rate of multistage amplitude modulation signal has been further improved. Compared with other advanced modulation schemes such as orthogonal phase shift keying (quadrature phase shift keying,QPSK), orthogonal amplitude modulation (quadrature amplitude modulation,QAM) and other advanced modulation schemes for WDM-PON, multistage amplitude modulation signals can detect (intensity modulation direct detection, directly by strength. IM-DD) receiving, relatively simple, can greatly reduce the cost of the client. On this basis, the main work of this paper is as follows: (1) the historical background and research significance of fiber-based multistage amplitude modulation baseband wired signal and ultra-wideband wireless signal fusion transmission technology are described. The definition, technical characteristics and application range of multi-stage amplitude modulation wired signal and ultra-wideband signal are briefly described. (2) A novel multistage amplitude modulation baseband wired signal and ultra-wideband wireless signal fusion transmission system is proposed. The working principle of the system is described in detail, including the generation, fusion, modulation, transmission, reception and recovery of multi-stage amplitude modulation baseband wired signal and ultra-broadband wireless signal. (3) based on the above experimental principle, A 20-kilometer conventional single-mode fiber (standard single mode fiber,SSMF) fusion transmission system for 2.5 Gbit/s four-stage amplitude modulation baseband wired signal and 1. 25 Gbit/s fourth-order ultra-broadband (quadruplet) wireless signal is implemented. Through the spectrum, eye diagram and bit error rate measured by the receiver, it is proved that the system has good performance. (4) the idle frequency band is too narrow in the previous test, which seriously affects the rate improvement of baseband wired signal. In order to further improve the performance of the converged transmission system, the multi-band ultra-wideband signal is introduced into the converged transmission system. A 20-kilometer conventional single-mode fiber uncompensated fusion transmission system with 10 Gbit/s four-stage amplitude modulation baseband wired signal and 1 Gbit/s multi-band ultra-broadband wireless signal is realized. The spectrum, eye chart and bit error rate (BER) prove that the system not only improves the transmission capacity, but also improves the transmission quality.
【学位授予单位】：重庆理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN925;TN929.11
本文编号：2472960
[Abstract]:Providing both ultra-wideband (ultra-wideband,UWB) wireless access service and baseband wired access service on a single wavelength channel can greatly reduce the complexity and construction cost of WDM passive optical network (wavelength-division multiplexing passive optical network,WDM-PON). Since ultra-wideband signals occupy the spectrum range from 3.1 GHz to 10.6 GHz, a narrow idle band will be generated in the 0 / 3.1 GHz range, which can be used to transmit baseband wired signals with limited bit rate. In this paper, two schemes for simultaneous transmission of ultra-broadband signal and baseband wired signal are proposed. In the first scheme, the high-order ultra-wideband signal is used to extend the width of the idle band and is modulated by a multistage pulse amplitude modulation (multi-level pulse amplitude modulation,). M-PAM) signal increases the bit rate of baseband wired signal in a limited idle frequency band. In the second scheme, multi-band ultra-wideband signal (multi-band ultra-wideband,MB-UWB) is used. Due to its flexible center frequency and narrow spectrum width, the width of idle band is greatly expanded. Therefore, the bit rate of multistage amplitude modulation signal has been further improved. Compared with other advanced modulation schemes such as orthogonal phase shift keying (quadrature phase shift keying,QPSK), orthogonal amplitude modulation (quadrature amplitude modulation,QAM) and other advanced modulation schemes for WDM-PON, multistage amplitude modulation signals can detect (intensity modulation direct detection, directly by strength. IM-DD) receiving, relatively simple, can greatly reduce the cost of the client. On this basis, the main work of this paper is as follows: (1) the historical background and research significance of fiber-based multistage amplitude modulation baseband wired signal and ultra-wideband wireless signal fusion transmission technology are described. The definition, technical characteristics and application range of multi-stage amplitude modulation wired signal and ultra-wideband signal are briefly described. (2) A novel multistage amplitude modulation baseband wired signal and ultra-wideband wireless signal fusion transmission system is proposed. The working principle of the system is described in detail, including the generation, fusion, modulation, transmission, reception and recovery of multi-stage amplitude modulation baseband wired signal and ultra-broadband wireless signal. (3) based on the above experimental principle, A 20-kilometer conventional single-mode fiber (standard single mode fiber,SSMF) fusion transmission system for 2.5 Gbit/s four-stage amplitude modulation baseband wired signal and 1. 25 Gbit/s fourth-order ultra-broadband (quadruplet) wireless signal is implemented. Through the spectrum, eye diagram and bit error rate measured by the receiver, it is proved that the system has good performance. (4) the idle frequency band is too narrow in the previous test, which seriously affects the rate improvement of baseband wired signal. In order to further improve the performance of the converged transmission system, the multi-band ultra-wideband signal is introduced into the converged transmission system. A 20-kilometer conventional single-mode fiber uncompensated fusion transmission system with 10 Gbit/s four-stage amplitude modulation baseband wired signal and 1 Gbit/s multi-band ultra-broadband wireless signal is realized. The spectrum, eye chart and bit error rate (BER) prove that the system not only improves the transmission capacity, but also improves the transmission quality.
【学位授予单位】：重庆理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN925;TN929.11
【参考文献】
相关期刊论文 前1条
1 杨晓雪;陈新桥;陈鑫;;基于SOA-XGM的超宽带脉冲信号的光学产生法[J];光纤与电缆及其应用技术;2011年04期
，本文编号：2472960
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