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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/65534

    Title: 差分空時籬柵碼;Differential Space-Time Trellis Codes
    Authors: 曾紹維;Tseng,Show-wei
    Contributors: 通訊工程學系
    Keywords: 時空碼
    Date: 2014-08-01
    Issue Date: 2014-10-15 17:03:02 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 最近有一種新的非同調籬柵碼,稱為差分籬柵編碼調變,在不同的狀態上使用不同的相差編碼,並藉由集合分割來設計籬柵圖,以達到較好的錯誤效能。本篇論文將這個非同調籬柵碼延伸到多根天線的系統上,稱為差分空時籬柵碼,首先我們以空時區塊碼為例子,將8PSK,32組可能的訊號做集合分割,接著在4、8、16的狀態下做籬柵相差編碼,
    ;Recently there is a new noncoherent trellis codes, called differential trellis coded modulation used in the different states differ in different coding and split by collection designed trellis codes, in order to achieve better error performance. In this thesis, this incoherent trellis extends to multiple antennas system called differential space-time trellis code, first we STBC as an example, the 8PSK, 32 group may make a collection of signal segmentation, then do the fence in the state 4,8,16 difference coding, and several different states from the trellis code to do the analysis, compared with the original uncoded modulation differential space-time,
    a larger minimum noncoherent distance, and obtained a computer program simulation results also show a better performance of its errors. In addition, we also use the super-orthogonal space-time trellis codes, and make the collection division and in different states do differ coding, depending on the distance analysis, we found differential quadrature empty super state in 4,8 differential space-time fence gate code and 8,16 state trellis codes when the same minimum noncoherent distance, and simulation results show that there is very close to the error performance.
    Appears in Collections:[通訊工程研究所] 博碩士論文

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