Title page for 86324060


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Student Number 86324060
Author Hung-Bin Ma(馬鋐斌)
Author's Email Address No Public.
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Department Electrical Engineering
Year 1998
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Performance Analysis and Assessment of Multi-Carrier Direct Sequence Spread Spectrum System-Effect of Nonlinear Power Amplification
Date of Defense
Page Count 83
Keyword
  • Multicarrier Direct Sequence Spread Spectrum System
  • Nonlinear Power Amplification
  • Abstract In recent years, spread spectrum technique has been considered to be a candidate to support multimedia services in mobile radio communication, because it has its own capabilities to cope with multimedia data traffic, and to combat interference and hostile fading channel. On other hand, the multi-carrier modulation scheme, has drawn a lot of attention in the field of radio communication. This is mainly because of the need to transmit high data rate in a mobile environment which makes a more hostile radio channel. To combat the problem, the multi-carrier modulation scheme seems to be a solution. But a major problem in multi-carrier signal is the inter-modulation interference and distortion due to the non-linearity of high power amplifier. Since the multi-carrier signal has a large amplitude variation which is subject to AM/AM and AM/PM distortion due to high power amplifier. This distortion causes a significant degradation to the system performance.
    This paper assess the performance of the various multi-carrier direct sequence spectrum systems in AWGN channel and multi-path Rayleigh fading channel including BER, power back-off and complexity of receiver. Finally, make a comparison between these systems.
    Table of Content 圖形列表
    表格列表
    第一章 : 簡介 1
    1.1 無線通訊系統的發展與趨勢
    1.2 多載波碼分多工系統
    1.3 非線性功率放大器對多載波系統的影響
    1.4 研究動機7
    第二章 : 系統模型
    2.1 訊號與系統模型
    2.2 非線性功率放大器模型
    2.2.1 TWTA放大器
    2.2.2 SSPA 放大器
    2.2.3功率退讓
    第三章 : 非線性功率放大效應的分析
    3.1 系統環境
    3.2 加成性白高斯雜訊通道下相互調變干擾與信號失真分析
    3.3 多路徑瑞雷衰減通道下相互調變干擾與信號失真分析
    3.4 系統複雜度
    第四章 : 分析與模擬的結果
    4.1模擬與數值計算方法
    4.2 加成性白高斯雜訊通道下系統的結果
    4.1.1 各系統分析與模擬的結果
    4.1.2 各系統間的比較
    4.3 多路徑瑞雷衰減通道下的結果
    4.3.1 各系統模擬的結果
    4.3.2 各系統間的比較
    第五章 : 結論
    中英對照表
    參考文獻
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    Advisor
  • Char-Dir Chung(鐘嘉德)
  • Files No Any Full Text File.
    Date of Submission

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