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論文名稱(外文):Interference Analysis between RFID and LTE Using Software Defined Radio
指導教授(外文):Wen-Tzu Chen
中文關鍵詞:軟體定義無線電系統干擾長期演進技術無線射頻辨識系統GNU Radio
外文關鍵詞:Software Defined RadioSystem InterferenceLTERFIDGNU Radio
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近幾年來無線通訊發展的技術可說是日新月異,4G LTE近幾年於台灣快速的發展,然而4G所需要使用的頻譜需求量是非常大的,因此頻譜的分配成了一門非常重要的課題。台灣4G第一次頻譜釋出最為人所爭議的其中一個頻段就是台灣之星的下行930MHz~940MHz,該頻段和高速公路電子收費系統的遠通電收所使用的RFID系統使用頻段:922.75MHz和924.25MHz非常接近,而保護頻帶的寬度只有約5MHz,如此一來兩個不同系統可能會有發生干擾的情形。
然而頻譜干擾是非常難以監測的一項任務,以目前的技術發展而言,要做出高品質的頻譜間干擾評估必須花費相當多的金錢和時間。近年來軟體定義無線電(Software-defined Radio : SDR) 發展逐漸成熟,而SDR最廣為人知的優勢就是具有高度的彈性以及低成本的開發環境,因此較容易從中取得有用的資料,本研究因此決定採用使用 SDR 並利用其優勢來評估干擾的情形,本研究總共提出了四種實驗情境並搭配SDR硬體USRP (Universal Software Radio Peripheral) 發射射頻電波來進行兩種系統間的干擾實驗。
經過本研究的實驗結果得出,兩個系統間確實會發生干擾,而一直要到約12MHz的保護頻帶 (guard band) 才不對彼此產生影響,而約在10MHz保護頻帶時,相互的干擾效果就已經不明顯,因此本研究根據實驗結果所提出的建議保護頻帶為10MHz~12MHz之間,就看監理機關和兩個業者間要如何做取捨。

Wireless communication is developing rapidly, and while the fourth generation (4G) Long Term Evolution (LTE) has been implemented in Taiwan, it requires a lot of spectrum resources, thus making spectrum allocation much more important than before. One telecoms operator, Taiwan Star Telecom, obtained the spectrum license from 930MHz to 940MHz in the first 4G spectrum auction. The freeway Electronic Toll Collection (ETC) system in Taiwan uses 922.75MHz and 924.25MHz for its Radio Frequency IDentification (RFID) system. However, with a guard band of less than 5MHz, these two systems may interfere with each other.
To examine such interference is a very difficult task, and would require much time and money. Software-defined Radio (SDR) has the advantages of flexibility and low cost, and thus in this work we use an SDR platform, GNU Radio, and the Universal Software Radio Peripheral (USRP) hardware, to evaluate the interference between these two systems with four different kinds of experiments. The evaluation indices include the frequency plot, constellation plot, and packet error rate.
The results of the experiments show that the guard band between the two systems needs to be 12MHz, although 10MHz is also acceptable, due to the limited spectrum resources in this context. It is anticipated that this finding can help regulators in their work here. Moreover, the results of this study show that SDR can be used to detect interference, and this is another promising application for this technology.

摘要 I
誌 謝 VI
目錄 VII
圖目錄 IX
表目錄 XI
第一章 緒論 1
1.1研究背景與動機 1
1.2 研究目的 3
第二章 相關背景 4
2.1文獻回顧 4
2.2軟體定義無線電 7
2.2.1軟體定義無線電的概念 7
2.2.2軟體定義無線電的平台 8
2.2.3軟體定義無線電的硬體 9
2.3 LTE系統 11
2.3.1 LTE系統介紹 11
2.3.2 OFDM系統 13
2.4 RFID介紹 15
2.4.1 RFID原理 16
2.4.2 電子產品碼EPC 17
第三章 研究方法 19
3.1 LTE系統 20
3.2 RFID系統 23
3.3實驗情境設計 25
第四章 實驗結果分析 31
4.1實驗數據分析 31
4.2研究限制及探討 49
4.2.1研究限制 49
4.2.2研究探討 49
第五章 結論 51
參考文獻 53

Ericsson Mobility Report: Global 4G/LTE divide will be wide in 2019, 2014. [Online].Available:http://www.ericsson.com/news/1790097?categoryFilter=press-releases_1270673222_c.
小丰子, 台灣LTE 4G 競標結果解析與後續發展預測, 31 10 2013. Available: https://www.kocpc.com.tw/archives/4225.
國家通訊傳播委員會, NCC重申有關ETC系統未來如有干擾4G行動通信之處理原則, 103. Available: http://www.ncc.gov.tw/chinese/news_detail.aspx?site_content_sn=8&sn_f=31561.
WikiStart - GNU Radio - gnuradio.org,Available: http://gnuradio.org/redmine/projects/gnuradio/wiki.
國家通訊傳播委員會, 特殊干擾處理技術與方法之評估研究, 101.
劉柏立, 王碧蓮, 許超雲 且 郭宗勝, “「頻譜資源規劃」研究報告, 財團法人台灣經濟研究院, 101.
D. T. Nguyen, Implementation of OFDM systems using GNU Radio and USRP, 2013.
W.-T. Chen, Ku-Tung Chang and Chung-Pao Ko, Spectrum monitoring for wireless TV and FM broadcast, in Springer Science, 2015.
張博豪, 採用軟硬體相互模擬實現基於長程演進技術下鏈路系統之收發機, 2013.
M. Buettner and D. Wetherall, A Software Radio-based UHF RFID Reader, IEEE International Conference on RFID, 2011.
范俊杰, 趙亮琳 且 鄭曜翔, “UHF RFID 與 GSM 通訊系統之干擾分析, International Journal of Advanced Information Technologies, 2014.
J. Mitola, The Sohare Radio Architecture, Communications Magazine, IEEE, pp. 26 - 38, 5 1995.
E. Research, USRP n200/n210,
E. Research, USRP B200 and B210,. Available: http://www.ettus.com/content/files/b200-b210_spec_sheet.pdf.
馬霓、夏斌, LTE/LTE-Advanced-UMTS長期演進理論與實踐, 人民郵電出版社, 2012.
3GPP, Tech. Specif. Group Radio Access Network.
Y. S. Cho, . J. Kim and C.-g. Kang, MIMO-OFDM Wireless Communications With Matlab, John Wiley & Sons Inc, 2010.
D. M. Dobkin, The RF in RFID: Passive UHF RFID in Practice, Elsevier Science Ltd, 2007.
陳宏宇, RFID系統入門:無線射頻辨識系統, 文魁資訊, 2004.
RTL-SDR.COM,Available: http://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/.
Elizabeth A.Thompson, NathanClem, IsaacRenninger and TimothyLoos, Software-definedGPSreceiveronUSRP-platform,
Journal ofNetworkandComputerApplications, 2012.
Johannes Demel, Sebastian Koslowski and Friedrich K. Jondral, A LTE Receiver Framework Using GNU Radio, Springer Science, 2015.
N. Kargas, F. Mavromatis and A. Bletsas, Fully-Coherent Reader with Commodity SDR for Gen2 FM0 and Computational RFID, IEEE Wireless Communications Letters, 2105.
Bjørn A. Bjerke,, John Ketchum, Rod Walton, Sanjiv Nanda, Irina Medvedev, Mark Wallace and Steven Howard, Packet Error Probability Prediction for System Level Simulations of MIMO-OFDM Based 802.11n WLANs, IEEE, 2005.

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