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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/8129


    Title: 循環字首及補零正交分頻多工系統經預編碼後之頻譜比較;Spectrum Comparisons of Precoded CP-OFDM and ZP-OFDM Systems
    Authors: 盧明宏;Ming-Hung Lu
    Contributors: 通訊工程研究所
    Keywords: 正交分頻多工系統;功率頻譜密度;頻譜;Spectrum;OFDM;Power Spectral Density
    Date: 2005-06-26
    Issue Date: 2009-09-22 11:18:55 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 由於正交分頻多工系統( Orthogonal Frequency Division Multiple, OFDM )已成為現今寬頻通訊系統之重要技術,因此改進OFDM之性能已成為重要的課題。在本篇論文中我們將針對當OFDM訊號在通過解決ICI問題、增加分集效應以及降低峰均值之預編碼後的頻譜效應來討論,並比較各個演算法外頻譜(out of band)及內頻譜平坦度(in-band flatness)的差異。 Orthogonal Frequency Division Multiple has become one of the key technologies in broadband communication systems nowadays. Improving the system performance of OFDM is therefore essential. The precoded-OFDM schemes for solving ICI problem, increasing diversity, and reducing PAPR are discussed in this thesis, inclusive of comparing the differences between out-of-band spectrum and in-band flatness.
    Appears in Collections:[通訊工程研究所] 博碩士論文

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