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標題: | 未授權頻帶長期演進技術之推測性收發機設計與實現 Design and Implementation of Speculative LTE-Unlicensed Transceiver |
作者: | Hao-Ping Hsu 許皓評 |
指導教授: | 闕志達(Tzi-Dar Chiueh) |
關鍵字: | 未授權長期演進技術,推測性傳輸,時域干擾消除, LTE-U,Speculative Transmission,Time-Domain Interference Cancellation, |
出版年 : | 2017 |
學位: | 碩士 |
摘要: | 本研究針對目前3GPP熱烈討論的研究項目:未授權頻帶之長期演進技術(LTE-Unlicensed, LTE-U)來做深入的研究,對於日漸稀少的頻譜資源來說此研究有其必要性,且對於跨系統的整合也是一種挑戰。論文中前兩章將會簡單介紹LTE-U其背景以及兩邊系統之規格參數,以及在軟體模擬之下會用到的Vienna Simulator模擬環境,讓讀者輕易了解其系統差異性;然而在第三章將會先行統整並且比較已知文獻中之作法,並且指出可以有全新不同的觀念來面對LTE-U場景之下的最大問題:跨系統的公平共存,並提出本論文的最大貢獻點:提出了“推測性傳輸”以及“時域干擾消除”等全新概念以及作法,此外我們也針對其運作場景做簡單之分析。接著本文分別在第四章以及第五章闡述傳送機以及接收機織架構以及作法。第四章主要為傳送機之設計以及實作結果。第五章則是本研究中用來分析關鍵技術:時域干擾消除之重點章節,我們會利用軟體模擬以及實際利用儀器接收真實訊號的方式來驗證其可行性,並且點出其適用條件。最終從軟體以及實驗的角度可以看到文中針對LTE-U提出新技術之創新性貢獻,期待可以為後續同樣出發點的研究開設出一個新的出發點。 In this research, we target the latest discussed research topic: LTE-Unlicensed, also known as LTE-U, as our research goal. As the wireless communication resource such as licensed bandwidth becoming scarse due to larger and larger amount of users and mobile devices this research is soon vital and inevitable while combining between different successful wireless communication technologies may be a challenge. In the first two chapter of this thesis, we will cover the background and issue behind LTE-U and both system technologies will be introduced in a simple way. The simulation tool: Vienna LTE Simulator will be mentioned as introductory content as well. The third chapter will cover the existing solutions to LTE-U, analysis and comparison will also be discussed. Instead of traditional mothods, a completely groundbreaking new idea of making a fair coexistence between two existing but totally different technologies will be brought up, which is “Speculative Transmission” and “Time-Domain Interference Cancellation (TDIC)”. In addition, a simple scenario analysis is being held in chapter 3. In chapter 4, we will first come up with the LTE-U transmitter design and architecture, and providing some hardware implementation results. Then, in chapter 5, we will discuss the most important key technology: TDIC. Using both software simulations and true over-the-air signal verification, we will prove this technology is feasible and practical under certain limitation and scenario. This thesis points out a brand new idea that is never discussed or heard of, and we expect this research will serve as a guide for future reseach toward this field. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/21032 |
DOI: | 10.6342/NTU201700210 |
全文授權: | 未授權 |
顯示於系所單位: | 電子工程學研究所 |
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ntu-106-1.pdf 目前未授權公開取用 | 5.93 MB | Adobe PDF |
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