| 基于小波变换的OFDM在瑞利衰落信道下的性能分析 |
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| 引用本文： | 王孝,薛艺. 基于小波变换的OFDM在瑞利衰落信道下的性能分析[J]. 科学技术与工程, 2009, 9(16) |
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| 作者姓名： | 王孝 薛艺 |
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| 作者单位： | 哈尔滨工业大学通信技术研究所,哈尔滨,150080;哈尔滨工业大学通信技术研究所,哈尔滨,150080 |
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| 摘 要： | 基于小波变换的OFDM是小波理论与OFDM技术相结合而产生的一种新的多载波调制技术.利用了小波函数的非零平移自正交性和强频谱带限能力等优势.介绍这种技术的基本原理,仿真该技术在瑞利衰落信道下的性能,并与传统的OFDM技术进行比较.在低信噪比下,DWT-OFDM技术的性能要明显优于传统的OFDM技术.
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| 关 键 词： | 小波变换 多分辨率分析 OFDM 瑞利衰落信道 |
Performance Analysis of Wavelet-based OFDM in Rayleigh Fading Channels |
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| WANG Xiao,XUE Yi. Performance Analysis of Wavelet-based OFDM in Rayleigh Fading Channels[J]. Science Technology and Engineering, 2009, 9(16) |
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| Authors: | WANG Xiao XUE Yi |
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| Affiliation: | Communication Research Center;Harbin Institute of Technology;Harbin 150080;P.R.China |
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| Abstract: | Wavelet-based OFDM is a new multicarrier modulation which combines wavelet theory with OFDM technology. It makes use of the advantages of wavelets such as nonzero translation self-orthgonality,good stop-band attenuation results and so on. The basic theory of DWT-4OFDM is introduced. The performance in rayleigh fading channel is simulated,then compared with traditional OFDM. In low SNR,the performance of DWT-OFDM is obviously better than traditional OFDM. |
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| Keywords: | OFDM |
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