本文選題：城域接入融合 + 可重構(gòu)光分插復(fù)用器　； 參考：《電子科技大學(xué)》2017年博士論文

【摘要】：近年來,隨著有線/無線業(yè)務(wù)多樣化和終端用戶不斷增加,大量數(shù)據(jù)流在城域網(wǎng)絡(luò)(MAN)進(jìn)行匯聚和交換,其流量增長(zhǎng)速率已是骨干網(wǎng)流量增長(zhǎng)速率的兩倍。此外,傳統(tǒng)網(wǎng)絡(luò)體系結(jié)構(gòu)下的城域網(wǎng)和接入網(wǎng)具有較為復(fù)雜的網(wǎng)絡(luò)基礎(chǔ)設(shè)施建設(shè),這不僅消耗了網(wǎng)絡(luò)資源,也給網(wǎng)絡(luò)的升級(jí)優(yōu)化帶來不便。為了適應(yīng)網(wǎng)絡(luò)流量的不斷增長(zhǎng),傳統(tǒng)城域網(wǎng)和接入網(wǎng)的無縫融合是未來網(wǎng)絡(luò)演進(jìn)的一個(gè)潛在趨勢(shì)。本文以城域接入融合網(wǎng)絡(luò)(MAIN)作為研究對(duì)象,利用不同用戶接入技術(shù)、信號(hào)調(diào)制/解調(diào)技術(shù)和信號(hào)交換技術(shù),對(duì)基于“環(huán)形+樹形”的城域接入融合網(wǎng)絡(luò)架構(gòu)進(jìn)行了設(shè)計(jì),并對(duì)其網(wǎng)絡(luò)交換節(jié)點(diǎn)使用的可重構(gòu)光分插復(fù)用器(ROADM)進(jìn)行深入研究。同時(shí),對(duì)MAIN全光虛擬專用網(wǎng)絡(luò)(AOVPN)實(shí)現(xiàn)進(jìn)行討論,并設(shè)計(jì)支持并發(fā)式AOVPN通信的MAIN網(wǎng)絡(luò)架構(gòu)。本文主要?jiǎng)?chuàng)新性工作如下:1.利用正交頻分復(fù)用(OFDM)、正交頻分多址接入(OFDMA)、OFDM子帶復(fù)用、時(shí)分復(fù)用(TDM)和偏振復(fù)用(PDM),提出了偏振復(fù)用子帶間插OFDM MAIN網(wǎng)絡(luò)架構(gòu)。網(wǎng)絡(luò)上/下行OFDM子帶信號(hào)占用不同偏振態(tài)且子帶頻譜間插,提高了網(wǎng)絡(luò)帶寬資源利用率。混合接入方式使整個(gè)網(wǎng)絡(luò)具有更高的靈活性和可擴(kuò)展性。網(wǎng)絡(luò)交換節(jié)點(diǎn)中的ROADM具有簡(jiǎn)單系統(tǒng)架構(gòu),網(wǎng)絡(luò)終端節(jié)點(diǎn)采用傳統(tǒng)OFDM收發(fā)機(jī)進(jìn)行信號(hào)調(diào)制/解調(diào),使網(wǎng)絡(luò)具有較高可升級(jí)性。理論分析了光信號(hào)中光載波分量和子帶信號(hào)間相位失配帶來的影響,并討論了上/下行多子帶信號(hào)接收機(jī)的信號(hào)處理過程。2.采用數(shù)字濾波器接入(DFMA)和波分復(fù)用(WDM),提出了基于WDM-DFMA的強(qiáng)度調(diào)制和直接探測(cè)(IM-DD)MAIN網(wǎng)絡(luò)。DFMA技術(shù)的使用不僅簡(jiǎn)化了網(wǎng)絡(luò)帶寬分配、提高了帶寬利用率,同時(shí)改善了網(wǎng)絡(luò)的靈活性、彈性、適應(yīng)性和可升級(jí)性。利用無源光耦合器和強(qiáng)度調(diào)制器,提出了基于數(shù)字信號(hào)處理(DSP)的低成本、低功耗ROADM,其不僅可以實(shí)現(xiàn)波長(zhǎng)、子載波帶和正交子帶信號(hào)的動(dòng)態(tài)上路和下路,而且對(duì)輸入信號(hào)調(diào)制格式、數(shù)字濾波器特性、光纖傳輸特性和終端接收機(jī)配置等具有較高的魯棒性。利用商用低成本光電器件,對(duì)此ROADM的正交子帶信號(hào)的下路功能進(jìn)行了實(shí)驗(yàn)驗(yàn)證。3.提出了基于WDM-DFMA的相干MAIN網(wǎng)絡(luò)。該網(wǎng)絡(luò)不但擁有更大的網(wǎng)絡(luò)系統(tǒng)容量和網(wǎng)絡(luò)覆蓋、同時(shí)具有靈活的網(wǎng)絡(luò)帶寬分配和更高的網(wǎng)絡(luò)彈性。針對(duì)相干DFMA網(wǎng)絡(luò)系統(tǒng),利用馬赫-曾德爾調(diào)制器(MZM),提出了兩種簡(jiǎn)單可行的ROADM下路方案,并對(duì)其進(jìn)行了理論推導(dǎo)和數(shù)值驗(yàn)證。結(jié)果表明,這兩種方案不僅具有相同的下路性能,而且可以帶來近10dB的ROADM下路性能改善,同時(shí)對(duì)調(diào)制指數(shù)變化具有較高的魯棒性。其次,研究結(jié)果還表明提出的ROADM下路方案對(duì)非理想下路MZM消光比、下路射頻信號(hào)相位偏移、光纖傳輸損傷和不同DFMA系統(tǒng)數(shù)字濾波方案具有較高魯棒性。此外,針對(duì)基于WDM-DFMA的相干MAIN網(wǎng)絡(luò),研究了最佳數(shù)字濾波方案和數(shù)字濾波器分配方案。4.針對(duì)單環(huán)形和多環(huán)形MAIN網(wǎng)絡(luò),研究了VPN通信的分類。提出了基于WDM的MAIN網(wǎng)絡(luò)架構(gòu),其不僅可以支持并發(fā)式AOVPN通信,而且可以動(dòng)態(tài)地建立和拆除AOVPN通信。同時(shí),理論分析了VPN通信的可擴(kuò)展性,且深入討論了動(dòng)態(tài)VPN帶寬分配。最后,利用基于IM-DD的OFDM系統(tǒng),探索了光源線寬對(duì)網(wǎng)絡(luò)通信性能的影響和MAIN網(wǎng)絡(luò)中AOVPN通信的可行性。
[Abstract]:In recent years, with the diversification of wired / wireless services and increasing end users, a large number of data streams have been converged and exchanged in the metropolitan area network (MAN). The rate of flow growth has been two times the rate of growth of backbone network traffic. In addition, the metropolitan area network and access network under the traditional network architecture have more complex network infrastructure construction. This not only consumes the network resources, but also brings inconvenience to the network upgrading and optimization. In order to adapt to the continuous growth of network traffic, the seamless integration of traditional man and access network is a potential trend in the evolution of the network. In this paper, a metropolitan area access fusion network (MAIN) is used as the research object, using different user access technology, signal modulation / signal modulation / Demodulation technology and signal exchange technology are designed for the "Ring + tree" based metropolitan access fusion network architecture, and the reconfigurable optical plug and multiplexer (ROADM) used by its network switching nodes is deeply studied. At the same time, the realization of the MAIN virtual private network (AOVPN) is discussed, and the AOVPN communication is designed and supported. The main innovative work of this paper is as follows: 1. using orthogonal frequency division multiplexing (OFDM), orthogonal frequency division multiple access (OFDMA), OFDM subband multiplexing, time division multiplexing (TDM) and polarization multiplexing (PDM), the polarization multiplexing subband interplugged OFDM MAIN network architecture is proposed. The network / downlink OFDM subband signals occupy different polarization states and subband spectrum. Intercalation improves the utilization of network bandwidth resources. The hybrid access method makes the whole network more flexible and extensible. The ROADM in the network switching node has a simple system architecture. The network terminal node uses a traditional OFDM transceiver to modulate / demodulate the network, so that the network has a high scalability. The optical signal is analyzed theoretically. The effect of phase mismatch between the carrier component and the subband signal is discussed, and the signal processing process of the upper / downlink multiband signal receiver is discussed..2. uses digital filter access (DFMA) and wavelength division multiplexing (WDM). The use of the WDM-DFMA based intensity modulation and direct detection (IM-DD) MAIN network.DFMA is not only simplified for the network, but also simplifies the network. Bandwidth allocation improves bandwidth utilization and improves the flexibility, flexibility, adaptability and scalability of the network. Using passive optical couplers and intensity modulators, the low cost and low power ROADM based on digital signal processing (DSP) is proposed, which can not only realize the wave length, the subcarrier band and the positive subband signal 'dynamic upstream and downstream, but also the low power consumption. Moreover, it has high robustness for the input signal modulation format, digital filter characteristics, fiber transmission characteristics and terminal receiver configuration. Using commercial low cost optoelectronic devices, the next circuit function of ROADM's positive subband signal is verified by.3.. The WDM-DFMA based coherent MAIN network is proposed. Large network system capacity and network coverage, with flexible network bandwidth allocation and higher network flexibility. Aiming at coherent DFMA network system, using Maher Zeng Del modulator (MZM), two simple and feasible ROADM routing schemes are proposed, and their theoretical derivation and numerical verification are carried out. The results show that these two schemes are not only different. It has the same down path performance, and can bring about the near 10dB ROADM road performance improvement, and has high robustness to the modulation index change. Secondly, the research results also show that the proposed ROADM down route scheme has the MZM extinction ratio of the non ideal down path, the phase shift of the RF signal, the fiber transmission damage and the different DFMA system digital filtering. In addition, for the coherent MAIN network based on WDM-DFMA, the best digital filtering scheme and the digital filter allocation scheme.4. are studied for the single ring and multi ring MAIN networks, and the classification of VPN communication is studied. A WDM based MAIN network architecture is proposed, which can not only support and hairstyle AOVPN communication, but also can be used for AOVPN communication. AOVPN communication is dynamically established and dismantled. At the same time, the extensibility of VPN communication is analyzed theoretically, and the dynamic VPN bandwidth allocation is discussed in depth. Finally, using the OFDM system based on IM-DD, the influence of the line width of the light source on the network communication performance and the feasibility of the AOVPN communication in the MAIN network are explored.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP393.1

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本文編號(hào)：2033287