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姓名	姜柏成(Po-Cheng Chiang)  查詢紙本館藏	畢業系所	通訊工程學系
論文名稱	多階層時空區段碼的效能分析 (Performance Analysis of Multilevel Block Coded Modulation With Space-Time Coding)
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摘要(中)	多傳多收天線系統(MIMO)作為4G、5G的核心技術近幾年蓬勃發，比單傳單收(SISO)更能增強通訊系統容量，系統的效能有著明顯的提升，而且又能提高頻譜效率，然而社會對於通訊系統的需求不僅僅滿足於現狀、而是追求更高效率、更高穩定度和更高正確性的通訊系統、本篇論文將討論時空區段碼結合多階層編碼在無線通訊系統中的效能及更改內部編碼來跟QPSK做比較。
摘要(英)	Multi-input Multi-output system(MIMO) has flourished in recent years as the core technology of 4G and 5G ,It can enhance the communication system capacity more than single-input single-output system (SISO). The system performance has been significantly improved, and the spectrum efficiency can be improved. However, the society′s demand for communication systems is not only satisfied with the status quo, but also pursues higher efficiency and more Communication system with high stability and higher accuracy. This paper will discuss the performance of space-time block codes combined with multi-level coding in wireless communication systems and change the internal coding to compare with the performance of QPSK.
關鍵字(中)	★ 多階層編碼	關鍵字(英)	★ Multilevel Block Coded
論文目次	摘要................................................................і Abstract............................................................ і і 致謝.............................................................. і і і 目錄.............................................................. і v 圖目錄............................................................ v і 表目錄........................................................... v і і 第一章 緒論 1.1引言........................................................1 1.2研究動機....................................................1 第二章 無線傳輸通道及特徵..........................................2 2.1多重路徑的原因..............................................2 2.2大規模傳播模型(Large-Scale Fading).............................2 2.2.1對數距離路徑損耗模型(Log-Distance Path Loss Model)..........2 2.2.2遮蔽效應與對數-常態分布(Log-Normal Distribution)............3 2.3小規模傳播模型(Small-Scale Fading)............................3 2.3.1 都普勒偏移(Doppler Shift)..................................4 2.3.2多重路徑傳播效應(Multipath Propogation Effect)................5 2.3.3同調頻寬(Coherence Bandwidth).............................6 2.3.4同調時間(Coherence Time)..................................6 2.3.5-1平緩衰減(Flat Fading)和頻率選擇性衰減(Frequency Selective Fading).............................................................7 2.3.5-2緩慢衰減(Slow Fading)及快速衰減(Fast Fading)............9 2.4 多重路徑衰落通道(multipath fading channel)....................11 2.5 瑞利衰弱通道(Rayleigh Fading Channel Model)...................12 2.6 可加性高斯白雜訊(Additive White Gaussian Noise Channel)........11 第三張 系統模型....................................................13 3.1 空時編碼技術(Space Time Coding).............................13 3.2 時空區塊碼(Space Time Block Code)...........................13 3.2.1 傳輸方塊圖..............................................13 3.2.2 傳輸矩陣................................................14 3.3多階層時空區段碼...........................................14 3.3.1系統傳輸架構............................................15 3.3.2最小編碼增益距離和最小均方歐式距離......................15 3.3.3 三階層編碼..............................................17 3.3.4 三階層解碼..............................................18 3.4 三階層編碼模擬結果.........................................20 第四章 多階層編碼..................................................21 4.1 設置分割....................................................21 4.2 五階層編碼..................................................22 4.3 五階層解碼..................................................23 4.4 BCH Code....................................................25 第五章 模擬結果....................................................26 第六章 結論........................................................31 參考文獻...........................................................32
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指導教授	林嘉慶(Jia-Chin Lin)	審核日期	2020-7-23
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