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研究生:彭倫忠
研究生(外文):Lun-Chung Peng
論文名稱:集群式無線電應用於蜂巢式行動通訊系統之研究
論文名稱(外文):A Study of Trunked Radio Applications for Mobile Cellular Systems
指導教授:蔡育仁蔡育仁引用關係
指導教授(外文):Yuh-Ren Tsai
學位類別:碩士
校院名稱:國立清華大學
系所名稱:通訊工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:英文
論文頁數:42
中文關鍵詞:集群式無線電蜂巢式通訊系統排隊理論派遣服務
外文關鍵詞:Trunk radio systemsCellular systemsQueueing throryDispatch service
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摘要

近幾年來,蜂巢式通訊系統 (cellular communication systems) 已成為二十一世紀非常重要的應用技術,隨著行動通訊技術不斷的進步與通訊產業的發達,高科技的通訊產品已融入家庭生活中;由於大眾對於通訊品質與服務 (QoS)需求不斷提高,第三代的蜂巢式通訊系統已被廣泛的使用於個人與商業領域。
同樣的,我們也知道集群式無線電系統 (trunked radio system) 在於私人或特定群組的通訊需求上扮演著非常重要的角色,集群式的主要觀念在於多個用戶共用有限的通道,在缺乏頻譜資源的現代,集群式無線電系統在頻譜的共用能力上有非常好的表現與特性。
集群式無線電系統與蜂巢式通訊系統最大的不同在於集群式無線電系統主要是使用於半雙工且一對多的派遣(dispatch)服務,而蜂巢式通訊系統主要是使用在一對一且全雙工的通訊服務,二種系統各有其優缺點與互補之處,在不同的環境與使用需求上有著優異的成績,基於以上幾點理由促成我們對於集群式無線電架構於蜂巢式通訊系統的研究與討論。
在這篇論文中,我們是將注意力專注於上傳通道與下傳通道的數量及群組的數目的關係,經由理論值的推導與電腦模擬提供我們大量有效的數據與圖表,在我們著手設計一個集群式無線電系統時,我們需要對系統的性能與資源上的使用做一最佳化的要求,簡單來說,也就是以最少的代價 (cost) 得到最好的整體使用效率,這些分析的結果於我們決定重要的系統參數時,將會做為依據與指標並提供設計者非常大的助益。
Abstract

In recent years, cellular communication systems have extremely important technique of the applications in twenty-one century. With the advance of the mobile communicational technique, the cellular system of the third generation has been used generally. We also know that trunked radio system get a nice property of having a good sharing ability of spectrum. A trunked radio system is different from cellular communications in that the primary service is this half-duplex one-to-many group dispatch. There are good reasons for thinking that trunked mobile radio services in the cell structure. In this thesis, we are concerned with the relationship between the number of up-link channels, down-link channels, and the number of groups in the trunked radio system. The results are used to support the design of trunked radio systems before they are constructed.
Bibliography

[1] G. L. Stuber, Principles of Mobile Communication, 2nd Edition, Boston, Kluwer Academic Publishers, 2001.
[2] P. Z. Peebles, Probability, Random Variables, and Random Signal Principles, Edition, New York, McGraw-Hill Inc, 1999.
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[4] A. L. Garcia, Probability and Random Process for Electrical Engineering, Edition, New York, Addison-Wesley Inc, 2002.
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[10] H.H. Hoang and R. Malhame, “Communication load and delay in multichannel load mobile systems for dispatch traffic,’’ in Proc. IEEE Vehicular Technology Conference, VTC 1992-Spring, vo1. 2, pp.773 – 777, May 1992.
[11] A. Chrapkowski and G. Grube, “Mobile trunked radio system design and simulation,’’ in Proc. IEEE Vehicular Technology Conference, VTC 1991-Spring, pp.245 - 250, May 1991.
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[14] H. M. Tasi, Y. B. Lin, “Modeling wireless local loop with general call holding times and finite number of subscriber,” IEEE Trans. Commun., vol. 51, pp.775 – 786, Jul. 2002.
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