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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/8269

    Title: 使用振幅相位鍵移之么正空時調變;Unitary Space-Time Modulation using Amplitude Phase-Shift Keying
    Authors: 李秉寰;Ping-Hwan Lee
    Contributors: 通訊工程研究所
    Keywords: 么正空時調變,振幅相位鍵移,碼搜尋;searched codes;amplitude phase-shift keying;unitary space-time modulation
    Date: 2008-07-04
    Issue Date: 2009-09-22 11:22:14 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 在2000年,一個使用相位鍵移(phase shift-keying, PSK)訊號之么正空時調變(unitary space-time modulation, USTM)之系統化設計被提出。在此篇論文中,我們提出三種使用振幅相位鍵移(amplitude phase-shift keying)訊號之么正空時調變架構。我們使用電腦去搜尋具有最大分集乘積 ζ的么正空時碼。相較於過去所提出的架構,在第一和第三種架構下,我們搜尋到有著較佳分集乘積的么正空時碼。模擬結果證實我們所搜尋到的么正空時碼相較於之前所提出的架構,有著較佳的錯誤率效能表現。 A systematic design of unitary space-time modulation using phase shift-keying (PSK) signals was proposed in 2000. In this thesis, we propose three schemes of unitary space-time modulation (USTM) that use amplitude phase-shift keying (APSK) signal points. We utilize the computer to search codes in USTM that maximize the diversity product ζ. Several of searched codes in Scheme 1 and Scheme 3 have better diversity product ζ than the codes for the proposed scheme in 2000. Simulation results confirm that our searched codes have better error performances than the proposed scheme in 2000.
    Appears in Collections:[通訊工程研究所] 博碩士論文

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