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系統識別號 U0026-3006201114431500
論文名稱(中文) IEEE802.16e上鏈同頻干擾分析
論文名稱(英文) Analysis for IEEE 802.16e Uplink Co-channel Interference
校院名稱 成功大學
系所名稱(中) 電信管理研究所
系所名稱(英) Institute of Telecommunications and Management
學年度 99
學期 2
出版年 100
研究生(中文) 謝函君
研究生(英文) Han-Chun Hsieh
學號 R96984043
學位類別 碩士
語文別 中文
論文頁數 53頁
口試委員 指導教授-陳文字
口試委員-黃光渠
口試委員-林福林
口試委員-高凱聲
中文關鍵字 IEEE 802.16e  WiMAX  同頻干擾  capacity loss 
英文關鍵字 IEEE 802.16e  WiMAX  Co-channel interference  capacity loss 
學科別分類
中文摘要 摘要
本論文研究針對IEEE 802.16e行動終端上鏈對基地台的同頻干擾,利用MATLAB程式運算出IEEE 802.16e上鏈同頻干擾相鄰區域基地台的干擾狀況,提供了因系統間干擾所引起的IEEE 802.16e系統性能下降分析結果,進一步比較同頻干擾影響的程度。在頻譜資源有限的情況之下,本研究整理出可能造成干擾的情況,透過計算同頻干擾值和基地台佈建方向、基地台距離、用戶多寡的關係;並分析增加基地台之間的距離、頻率規劃與最大用戶數上限設定等等調整干擾情境,以及模擬出總干擾對整體通訊系統的影響程度。
從模擬結果得知,經過修正後的COST-231 Hata路徑損失模式,計算出可接受的路徑損失,再算出可接受的細胞範圍為250公尺,而終端與基地台間距則以20~250作亂數分配。不論是單層或雙層基地台終端干擾,若在QPSK 1/2調變方式下,基地台半徑在250公尺,終端功率限制在最大功率200mW時,終端上鏈運用同頻率訊號進行傳輸時,總系統覆蓋率皆可達九成以上,此調製方式可以滿足同頻率重覆使用的需求。在多基地台雙層干擾終端的情況下,16QAM 1/2調變系統中用戶數多寡為影響容量的顯著因素,且雙層基地台終端同頻干擾較單層基地台終端干擾嚴重,隨著基地台終端用戶人數越多,同頻干擾程度越大。
英文摘要 Abstract
This research concerns about how the uplink of MSs (Mobile Stations) interfere with a victim BS (Base Station) using the same frequency channel in IEEE 802.16e system. The uplink co-channel interference scenarios proposed by our work are simulated within the adjacent area and the same frequency bands by MATLAB. The numerical results also indicate the overall IEEE 802.16e system performance declines due to intra-system interference. Owing to the limitation of radio frequency resources, we analyze the situation with the proposed interference scenarios, which are mainly differentiated by the network deployment, separation distances of BSs and the number of users. Also, we further analyze the performance by adjusting such interference-related terms including the distance between the BSs, the frequency planning, and the maximum number of users. Then the total interference effect for the communication system can be obtained.

A revised COST-231 Hata model is used to get the acceptable path loss, and then the acceptable range of a cell is calculated. In the simulations, the distance between the mobile and the base station is set to the random distribution in the range of 20-250 meters. The simulation results show that the total system capacity can reach over 90 percent under the following conditions: QPSK modulation with 1/2 code rate, the BSs radius of 250 meters, the MSs at the maximum radiation power of 200mW, and radiation under the same frequency. Moreover, in the situation of two-tier interfering and 16QAM modulation with 1/2 code rate, the number of users is the most significant factor affecting the system capacity. And the situation of co-channel interference in the two-tier interfering MSs has greater capacity loss than the one-tier interfering MSs. Finally, when the amount of users that served by the specific BS increases, the effect caused by co-channel interference will even more serious.
論文目次 目錄
摘要 I
目錄 III
圖目錄 V
表目錄 VII
第一章 緒論 1
第一節 研究背景與動機 1
第二節 研究目的 3
第二章 文獻探討 4
第一節 IEEE802.16e 網路架構 4
第二節 IEEE802.16e 核心技術 5
第三節 IEEE802.16e 干擾情境 8
第四節 相關文獻 12
第三章 研究方法 15
第一節 頻段配置 15
第二節 IEEE802.16e干擾分析 17
第三節 通道模型 20
第四節 同頻干擾計算 22
第四章 效能評估 27
第一節 模擬參數設定 27
第二節 通道環境與基地台半徑設定 29
1. 通道分配方式 29
2. 基地台覆蓋半徑 31
第三節 單層干擾分析 33
1. 環境設定 33
2. 結果分析 34
第四節 雙層干擾分析 38
1. 環境設定 38
2. 結果分析 39
第五章 研究結論 45
參考文獻 47
附錄 部份程式碼 50
參考文獻 參考文獻
【中文部分】
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[3] 國家通訊委員會(NCC),「行動通信業務客戶統計數」,民100,取自
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份有限公司,民98。
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清華大學通訊工程研究所碩士論文,民93。

【外文部分】
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