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

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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:	[Graduate Institute of Communication Engineering] Electronic Thesis & Dissertation

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