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研究生:鄭鈺
研究生(外文):Yu Cheng
論文名稱:合作式二段與三段長距離傳輸感知無線網路之效率比較
論文名稱(外文):Efficiency Comparison between Cooperative Two-Hop and Three-Hop Long-Distance Transmission Cognitive Radio Networks
指導教授:張伯浩
指導教授(外文):Po-Hao Chang
學位類別:碩士
校院名稱:國立東華大學
系所名稱:電機工程學系
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:2016
畢業學年度:104
論文頁數:41
中文關鍵詞:感知無線電合作式中繼點最佳化功率分配三段式合作傳輸
外文關鍵詞:Cognitive RadioCooperative RelayOptimal Power AllocationCooperative Three-Hop Transmission
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在感知無線網路中,目前的傳輸模式,主要是利用直接傳輸或二段式合作傳輸來達成訊號傳遞的目的,為了使傳輸效率更好,進而將二段式傳輸擴充為三段式傳輸。先前的研究已經確定了三段式傳輸的架構與理念,也確定能為整體的訊號傳送品質,帶來更好的效率。

本次的研究,將原有目標端的距離作逐步的延伸,將三段式傳輸與以往的傳輸模式,比較長距離衰弱的傳輸效率的差異,並取出三段式傳輸,在不同距離之終端的通道選擇狀態,觀察其傳送效率的變化,以此證明三段式合作傳輸,不單僅有傳輸效率的增加,亦增加了訊號傳送的距離。

The prevalent transmission modes for cognitive radio (CR) networks include direct and two-hop transmissions. An augmented three-hop transmission is proposed in this thesis to improve the transmission efficiency, under the condition that previous research has already introduced the idea and set up the structure of three-hop transmission.

In this thesis, the distance of the destination is gradually extended in the augmented three-hop transmission, and the efficiency of this proposed transmission is compared with that of the previous three-hop transmission. Further observation on efficiency is performed upon the augmented three-hop transmission with various distances of the destinations. The results show that not only does the co-operative three-hop transmission improve the transmission efficiency, but it also increases the transmission distance.

致謝 I
摘要 II
ABSTRACT III
目錄 IV
圖目錄 VI
表目錄 VII
第一章 緒論 1
1.1 前言 1
1.2 研究動機與目的 2
1.3 論文架構 3
第二章 相關研究 5
2.1 直接傳輸 5
2.2 二段式傳輸 8
2.3 三段式傳輸 12
第三章 最佳化功率分配 19
3.1 最佳化功率分配 19
3.2 注水原理 21
3.3 功率分配流程圖 26
第四章 模擬結果 27
4.1 環境設定 27
4.2 單目標模擬結果 30
4.3 長距離目標模擬結果 32
4.4 傳輸模式模擬結果 37
第五章 結論 39
參考資料 41
[1] J. Mitola et al. , ”Cognitive Radio: Making Software Radios MorePersonal ” , IEEE Pers. Communication, vol. 6, no. 4, pp. 13-18 , Aug. 1999.
[2] Xiaoxue Liu ; Baoyu Zheng and Wei Ji , " Cooperative Relay with Power Control in Cognitive Radio Networks" , Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference , Page(s): 1-5 .
[3] Xiaoxue Liu ; Baoyu Zheng ; Jingwu Cui and Wei Ji , "A new scheme for power allocation in cognitive radio networks based on cooperative relay " Communication Technology (ICCT), 2010 12th IEEE International Conference , Page(s): 861-864.
[4] Guei-Yi Huang , " Multi-Relay Selection and Optimal Power Allocation in Cognitive Radio Networks with Cooperative Three-Hop Transmission " , National Dong Hwa University , Jul. 2013.
[5] C. Luo ; F. Richard Yu ; H. Ji and Victor C. M. Leung , ”Distributed Relay Selection and Power Control in Cognitive Radio Networks with Cooperative Transmission” Communications (ICC), 2010 IEEE International Conferenceon , Page(s): 1- 5 .
[6] Liying Li ; Xiangwei Zhou ; Hongbing Xu ; Geoffrey Ye Li ; Dandan Wang and Anthony Soong , " Simplified Relay Selection and Power Allocation in Cooperative Cognitive Radio Systems " IEEE Transactions on Wireless Communications, Vol. 10 , no.1 , pp. 33-36 , Jan. 2011.
[7] Chengshi Zhao and Kyungsup Kwak , " Joint sensing time and power allocation in cooperatively cognitive networks " , IEEE Communications Letters , Vol.14 , no. 2 , pp. 163-165 , Feb. 2010.
[8] Xiangwei Zhou ; Jun Ma ; Geoffrey Ye Li ; Young Hoon Kwon and Anthony C. K. Soong, " Probability-based combination for cooperative spectrum sensing " , IEEE Transactions on Communications , Vol.58 , no.2 , pp. 463-466 , Feb. 2010.

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