| 一种基于径向基函数网络的OFDM信道估计及跟踪方法 |
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| 引用本文： | 王昕,马杰,滕建辅.一种基于径向基函数网络的OFDM信道估计及跟踪方法[J].电路与系统学报,2005,10(2):126-130. |
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| 作者姓名： | 王昕 马杰 滕建辅 |
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| 作者单位： | 天津大学,电子信息工程学院,天津,300072 |
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| 摘 要： | 本文提出了一种基于径向基函数网络(RBFN)的正交频分复用(OFDM)系统信道估计及跟踪算法。该方法采用分散导频,并将RBFN网络参数相应地分成子集,依次利用导频子集对网络参数子集进行训练、更新,RBFN在学习与逼近信道响应时利用了OFDM信道的时频相关性。仿真结果表明该信道跟踪方法具有良好的误码率性能,且对快衰落有很强的鲁棒性。
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| 关 键 词： | 径向基函数网络 正交频分复用 信道估计 分散导频 |
| 文章编号： | 1007-0249(2005)02-0126-05 |
| 修稿时间： | 2004年11月16 |
A radial basis function network-based channel estimation and tracking method for OFDM systems |
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| WANG Xin,MA Jie,TENG Jian-fu.A radial basis function network-based channel estimation and tracking method for OFDM systems[J].Journal of Circuits and Systems,2005,10(2):126-130. |
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| Authors: | WANG Xin MA Jie TENG Jian-fu |
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| Abstract: | A radial-basis-function-network-based channel estimation and tracking method is presented for OFDM systems. The scattered pilots are employed for pilot arrangement, and used for the training of RBFN parameters that have been divided into groups according to the pilot subsets. The RBFN parameters are updated by using the training pilot subsets in order, which implied that the inherent correlations in both frequency and time of channel characteristics are utilized. The simulation results show that this method has a good BER performance and is robust to fast fading channel. |
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| Keywords: | radial basis function network OFDM channel estimation scattered pilot |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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