【摘要】：近年來移動應(yīng)用業(yè)務(wù)的增長,對接入網(wǎng)帶寬提出了越來越高的要求。高速毫米波光無線融合系統(tǒng)充分利用光纖的巨大帶寬和無線傳輸?shù)撵`活性,期冀為未來提供Gb/s級數(shù)據(jù)的傳輸。高速光無線融合系統(tǒng)由于其帶寬高、覆蓋范圍廣、傳輸速率高、保密性好,受到了越來越多的關(guān)注,國內(nèi)外各大科研機構(gòu)紛紛開展相關(guān)研究。本文從光無線融合系統(tǒng)的系統(tǒng)構(gòu)建和原理出發(fā),研究提升光無線系統(tǒng)傳輸容量和距離的關(guān)鍵使能技術(shù),如光生毫米波技術(shù),多維復(fù)用技術(shù),以及在無線接收端的相干接收算法。在光發(fā)射機端,我們研究了不同先進調(diào)制格式的產(chǎn)生方式和原理,仿真分析了QPSK、16QAM等先進調(diào)制格式的不同傳輸損耗,并基于現(xiàn)已鋪設(shè)的光纖網(wǎng)絡(luò),搭建了W波段通斷鍵控(00K)信號光無線系統(tǒng)的實驗傳輸驗證系統(tǒng),4 Gb/s信號經(jīng)過40 km光纖和2 m無線傳輸后,誤碼仍能滿足FEC閾值的要求。此外,基于相干檢測,我們對QPSK色散補償、偏振解復(fù)用、頻偏估計以及載波恢復(fù)等線性和非線性補償算法進行了研究,并對基于RF導(dǎo)頻的DFTS-OFDM相位噪聲補償仿真系統(tǒng)進行介紹與分析。最后,我們搭建了基于W波段的雙向傳輸光無線光纖融合實驗驗證系統(tǒng),通過改進部署結(jié)構(gòu),引入光相干檢測和數(shù)字信號處理技術(shù),實現(xiàn)了在(20+20)km光纖鏈路和2 m無線鏈路上傳輸30 Gb/s的信號。
[Abstract]:In recent years, with the growth of mobile application service, the bandwidth of access network is becoming more and more important. High-speed millimeter-wave optical wireless fusion system makes full use of the huge bandwidth of optical fiber and the flexibility of wireless transmission, hoping to provide Gb/s level data transmission for the future. High speed optical wireless fusion system has attracted more and more attention because of its high bandwidth, wide coverage, high transmission rate and good confidentiality. Based on the system construction and principle of optical wireless fusion system, this paper studies the key enabling technologies to enhance the transmission capacity and distance of optical wireless systems, such as optical millimeter-wave technology, multi-dimensional multiplexing technology, and coherent reception algorithm at the wireless receiver. At the end of the optical transmitter, we study the generation methods and principles of different advanced modulation formats, simulate and analyze the different transmission losses of the advanced modulation formats such as QPSK,16QAM, and base on the fiber optic network that has been laid. An experimental transmission verification system for W band on-off keying (00K) signal optical wireless system is built. After 40 km optical fiber and 2 m wireless transmission, 4 Gb/s signals can still meet the requirements of FEC threshold. In addition, based on coherent detection, linear and nonlinear compensation algorithms such as QPSK dispersion compensation, polarization demultiplexing, frequency offset estimation and carrier recovery are studied. The simulation system of DFTS-OFDM phase noise compensation based on RF pilot is introduced and analyzed. Finally, we set up an experimental verification system of optical fiber fusion based on W band. By improving the deployment structure, we introduce optical coherence detection and digital signal processing technology. A 30 Gb/s signal is transmitted on (20 20) km fiber link and 2 m wireless link.
【學(xué)位授予單位】：復(fù)旦大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.1

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相關(guān)期刊論文 前1條

1 湯禪娟;李榮玲;邵宇豐;遲楠;余建軍;董澤;G. K. Chang;;Experimental demonstration for 40-km fiber and 2-m wireless transmission of 4-Gb/s OOK signals at 100-GHz carrier[J];Chinese Optics Letters;2013年02期

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本文編號：2425392