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使用复小波包的MIMO-OFDM无线系统 被引量:4

Complex wavelet packet based MIMO-OFDM wireless system
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摘要 为了在频率选择性信道中提供高速数据业务 ,提出了一种新的多入多出 正交频分复用系统MIMO OFDM(Multi InputMulti Output OrthogonalFrequencyDivisionMultiplexing) .该系统使用复小波包变换CWPT(ComplexWaveletPacketTrans form)来实现OFDM ,而不是使用传统的快速傅立叶变换FFT(FastFourierTransform) .由于复小波包函数具有很好的特性 ,通过对有 2个用户的MIMO OFDM系统进行仿真的结果表明 ,基于CWPT的MIMO OFDM系统性能要比使用传统的FFT的MIMO OFDM系统好 ,但是复杂度略高 . To provide high speed data service in frequency selective fading channels, a new MIMO-OFDM (multi-input multi-output-orthogonal frequency division multiplexing) system was proposed. The system used CWPT (complex wavelet packet transform) instead of FFT (fast Fourier transform) to realize OFDM. For the property of complex wavelet packet functions, simulation of a MIMO-OFDM system with two users show that, the CWPT based MIMO-OFDM system is better than the FFT based MIMO-OFDM system, but the CWPT based MIMO-OFDM scheme has some additional complexity.
出处 《北京航空航天大学学报》 EI CAS CSCD 北大核心 2004年第11期1084-1087,共4页 Journal of Beijing University of Aeronautics and Astronautics
基金 国家自然科学基金资助项目 (60 172 0 5 1) 2 0 0 4教育部重点资助项目 (10 40 42 ) 国家博士点基金资助项目
关键词 多入多出系统 复小波包变换 正交频分复用 最小均方误差 Computational complexity Computer simulation Fast Fourier transforms Orthogonal frequency division multiplexing Wavelet transforms
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参考文献8

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同被引文献14

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