臺灣博碩士論文加值系統

由於前三代行動通訊技術受限於頻寬、速率等因素的影響，無法提供更好的服務，因此發展出第四代行動通訊技術，其中以長期演進技術（Long Term Evolution）及微波存取全球互動（WiMAX）為主要的技術，在此論文中將探討微波存取全球互動中關於基地台的頻譜（Frequency spectrum）資源如何分配以及透過合作通訊是否可以增加基地台可用的頻譜資源。此外，有鑑於使用微波存取全球互動無線網路技術的人越來越多，如何將基地台的頻譜資源做最好的分配以及如何經由合作通訊的技術，讓同一個基地台的服務範圍下可以容納更多使用者，並減少資源的浪費。本論文研究的重點為提出一套基地台的頻譜資源分配的演算法，透過判斷使用者所使用之調變技術，以及使用者所需之頻譜資源，利用合作通訊的技術，分配基地台的資源以服務使用者，?揭言H最少的資源服務最多的使用者的目標。最後將找出最佳使用合作通訊技術的時機，避免頻譜資源的浪費並提升整個系統的效能。

Since the first three generations of mobile communication technology is limited by bandwidth, speed and other factors. To provide better services, the fourth-generation mobile communication technology is developed, and it includes the LTE and WiMAX as a key technology. In this thesis, we discuss the Frequency spectrum resources allocation of WiMAX, and whether cooperative communication can increase the resources available Frequency spectrum. Moreover, due to WiMAX wireless technology is useful by many people, how to allocate resources of Frequency spectrum and include most users in service range of base station through cooperative communication technology so that reduce cost. The focus of this thesis proposes an algorithm for Frequency spectrum resource allocation. We determine which modulation techniques used and Frequency spectrum of resources required by users, and we allocate resources of base station to service users by cooperative communication technology, such that reaches to the goal about serving the most users by the least service cost. Finally, we avoid to waste resources of Frequency spectrum and improve overall system performance by finding the optimal timing that cooperative communication technology use.

摘要 II
ABSTRACT III
目錄 IV
圖目錄 V
表目錄 VI
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究目的 5
1.3 研究範圍 5
1.4 本文架構 6
第二章 文獻探討 7
2.1 Frequency spectrum資源分配相關研究 7
2.2合作通訊相關研究 9
第三章 研究方法 14
3.1 問題描述 14
3.2 演算法 16
3.3 實驗模型 22
第四章 模擬結果與分析 26
4.1模擬環境與參數設定 26
4.2模擬結果 27
4.3 模擬分析 36
第五章 結論與未來研究 39
參考文獻 40

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