| OFDM信道估计的复矩阵分解及FPGA实现 |
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| 引用本文： | 韩庆文,张鹏,王韬.OFDM信道估计的复矩阵分解及FPGA实现[J].重庆大学学报(自然科学版),2009,32(3). |
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| 作者姓名： | 韩庆文 张鹏 王韬 |
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| 作者单位： | 重庆大学,通信工程学院,重庆,400030
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| 基金项目： | 国家自然科学基金，重庆市自然科学基金，重庆大学研究生科技创新项目 |
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| 摘 要： | 应用基于奇异值分解的OFDM(orthogonal frequency dirision multiplexing)信道估计降低计算量的同时能够保证信道估计的性能,研究OFDM信道向量自相关矩阵奇异值分解的FPGA(field programmable gat array)实现,提出一种复共轭对称矩阵奇异值分解的FPGA简化实现方法,将复矩阵的奇异值分解转换为实矩阵的奇异值分解,并根据实对称矩阵SVD(singular value decomposition)的特点对Systolic阵列结构进行改进,减少了所占用的资源.最后设计了高阶实对称矩阵SVD的FPGA实现方案,仿真结果表明该设计方案是可行的,能够应用于OFDM信道估计系统.
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| 关 键 词： | 奇异值分解 正交频分复用 信道估计 |
Field programmable gate array implementation for singular value decomposition in an orthogonal frequency division multiplexing channel estimation |
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| HAN Qing-wen,ZHANG Peng,WANG Tao.Field programmable gate array implementation for singular value decomposition in an orthogonal frequency division multiplexing channel estimation[J].Journal of Chongqing University(Natural Science Edition),2009,32(3). |
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| Authors: | HAN Qing-wen ZHANG Peng WANG Tao |
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| Institution: | College of Communication Engineering;Chongqing University;Chongqing 400030;P.R.China |
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| Abstract: | The singular value decomposition(SVD)-based orthogonal frequency division multiplexing(OFDM) channel estimation can guarantee channel estimation performance,while reducing computation.A simplified implementation method for SVD of a Hermitian matrix is proposed which transforms a Hermitian matrix SVD to a real symmetry matrix SVD to achieve high-speed operation.The systolic array structure is improved based on the SVD characteristics for symmetry matrix to conserve system resources.The field programmable gat... |
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| Keywords: | singular value decomposition orthogonal frequency division multiplexing channel estimation |
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