Title page for 985203027


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Student Number 985203027
Author Da-lun Guo(郭達倫)
Author's Email Address alanguo23@gmail.com
Statistics This thesis had been viewed 476 times. Download 296 times.
Department Communication Engineering
Year 2010
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Modified Improved Layered OSIC Detection for MIMO-OFDM Systems
Date of Defense 2011-07-12
Page Count 78
Keyword
  • MIMO OFDM
  • Signal Detection
  • V-BLAST
  • Abstract Vertical Bell Laboratories Layered Space-Time(V-BLAST) is a multiple-input multiple-output(MIMO) wireless system. V-BLAST attains very high spectral efficiency while maintaining a low complexity of implementation. In this thesis, we propose a new layered symbol detection algorithm for V-BLAST OFDM systems. The proposed algorithm uses a symbol detection ordering method which is different from that recommended in the original OSIC algorithm. In our scheme, for the layer with the smallest post-detection SNR, we use reduced complexity ML for detection, and for other layers, a reduced iterative OSIC detection scheme is developed. Simulation results show that the proposed detection algorithm achieves high detection performance which is close to the ML detection method, and significantly reduces the computational complexity.
    Table of Content 目錄
    中文摘要. . . . . . . . . . . . . . . . . . . . . . . . . . .i
    英文摘要. . . . . . . . . . . . . . . . . . . . . . . . . . ii
    目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
    圖目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . vi
    表目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . ix
    第1 章序論. . . . . . . . . . . . . . . . . . . . . . . . . .1
    1.1 前言. . . . . . . . . . . . . . . . . . . . . . . . . . .1
    1.2 論文章節架構. . . . . . . . . . . . . . . . . . . . . . .4
    第2 章MIMO-OFDM 系統介紹. . . . . . . . . . . . . . . . . . .5
    2.1 Uncoded V-BLAST OFDM 傳收系統. . . . . . . . . . . . . . 5
    2.2 SM-MIMO 系統訊號偵測. . . . . . . . . . . . . . . . . . .8
    2.2.1 ZF 及MMSE 偵測法. . . . . . . . . . . . . . . . . . . .8
    2.2.2 OSIC 偵測法. . . . . . . . . . . . . . . . . . . . . .12
    2.2.3 ML 偵測法. . . . . . . . . . . . . . . . . . . . . . .15
    2.3 Coded V-BLAST OFDM 傳收系統. . . . . . . . . . . . . . .16
    第3 章次最佳MIMO-OFDM 系統偵測演算法. . . . . . . . . . . . 19
    3.1 Improved Layered OSIC 偵測演算法. . . . . . . . . . . . 19
    3.2 Modified Improved Layered OSIC 偵測演算法. . . . . . . .25
    3.2.1 加強階層訊號之決策可靠度. . . . . . . . . . . . . . . 25
    3.2.2 Reduced Complexity ML 偵測應用於OSIC 演算法. . . . . .27
    3.2.3 Reduced Iterative OSIC 偵測演算法. . . . . . . . . . .31
    3.3 Modified Improved Layered OSIC 偵測結合軟性決策輸出. . .36
    3.4 運算複雜度分析. . . . . . . . . . . . . . . . . . . . . 37
    第4 章模擬結果與分析. . . . . . . . . . . . . . . . . . . . 43
    4.1 Uncoded MIMO-OFDM 系統架構. . . . . . . . . . . . . . . 43
    4.1.1 Uncoded MIMO-OFDM 模擬參數. . . . . . . . . . . . . . 43
    4.1.2 Uncoded 4 × 4 MIMO-OFDM 模擬結果. . . . . . . . . . . 44
    4.1.3 Uncoded 8 × 8 MIMO-OFDM 模擬結果. . . . . . . . . . . 49
    4.2 Coded MIMO-OFDM 系統架構. . . . . . . . . . . . . . . . 55
    4.2.1 Coded MIMO-OFDM 模擬參數. . . . . . . . . . . . . . . 55
    4.2.2 Coded MIMO-OFDM 模擬結果. . . . . . . . . . . . . . . 56
    第5 章結論. . . . . . . . . . . . . . . . . . . . . . . . . 60
    參考文獻. . . . . . . . . . . . . . . . . . . . . . . . . . 62
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    Advisor
  • Dah-chung Chang(張大中)
  • Files
  • 985203027.pdf
  • approve in 2 years
    Date of Submission 2011-08-12

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