- 學位論文
應用光纖射頻技術對行動通信系統關鍵因素影響之研究
Study of the Key effects of Cellular Communication Systems by Radio over Fiber Technology
摘要
近年來，寬頻碼分多工進階技術已普遍應用在各國行動通訊系統上；雖然大多數的第三代行動通信系統已架設許多基地台於網路中，但在某些區域、角落如超高大樓及地下隧道，須要安裝一個簡單而穩定的系統，來提升信號的強度，可改善現有通信網路之通話品質。 本論文研究提出以光纖射頻技術來探討如何設計一個光纖中繼器系統架構應用於捷運系統、高速鐵路、地下鐵等大眾運輸工具，室內涵蓋行動通信系統進行研究和分析說明。 本論文以理論及工程實務面的角度提出光纖中繼器規劃中應遵循的基本鏈路計算原理與設計原則，充分讓網路工程規劃顧問公司的設計工程師及電信系統營運公司的維運工程師掌握光纖中繼器和基地台與手機之間上下行增益平衡的計算步驟。最後以某鐵路地下化之洩波電纜系統為實際案例做為行動通信室內涵蓋論證規劃設計的參考實績。
並列摘要
Currently, the Wideband Code Division Multiple Access (WCDMA) technology has already been generally applied to the cellular communication system of various countries. Though most 3rd generation systems have already erected the platform of many bases, transceiver station is Node B in universal mobile telecommunications systems. Some areas, such as high buildings and underground tunnels, must install a simple and stable system to improve the intensity of the signal, which can improve the quality of the communication network. This thesis investigates the fiber repeater (FR) systems which applied for radio over fiber (RoF) technology in mobile phone coverage working with Metro High-Speed Railway and Subway such as analysis for public coverage of an indoor transition system. This thesis is based on the theory and practical engineering principle which provide guidelines and formulas for a link budget design to help network planning companies and Telecom operator designers fully control and analyze the single output power of uplink and downlink between fiber repeaters and mobile phones as well as base stations. Finally, the results of this leakage cable (LC) system are practically applied to an indoor coverage design for Taiwan Railway Administration System.