| 一种时变MIMO信道跟踪算法及仿真分析 |
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| 引用本文： | 宋涛,曾渊,许家栋. 一种时变MIMO信道跟踪算法及仿真分析[J]. 计算机仿真, 2008, 25(6) |
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| 作者姓名： | 宋涛 曾渊 许家栋 |
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| 作者单位： | 西北工业大学,电子信息学院,陕西,西安,710072 |
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| 基金项目： | 航空基础科学基金 , 陕西省自然科学基金 , 西北工业大学校科研和教改项目 |
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| 摘 要： | 对时变多发多收(MIMO)无线数字信道,在信道接收端应用逆滤波器算法,得到无线MIMO数字系统的信道冲击响应函数,并将此函数作为初始值,应用改进的粒子滤波器算法,完成时变MIMO数字系统的盲信道跟踪.算法同时利用了信号的时间分集信息和空间分集信息.计算机仿真表明,与仅利用信号空间分集信息的逆滤波器算法相比,算法在输入信号小信噪比情况下有更好的全局收敛特性;与卡尔曼滤波算法相比,得到的归一化信道误差更小.
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| 关 键 词： | 多人多出 粒子滤波器 盲信道跟踪 |
Simulation and Analysis of a Time-varying MIMO Channel Tracking Algorithm |
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| SONG Tao,ZENG Yuan,XU Jia-dong. Simulation and Analysis of a Time-varying MIMO Channel Tracking Algorithm[J]. Computer Simulation, 2008, 25(6) |
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| Authors: | SONG Tao ZENG Yuan XU Jia-dong |
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| Affiliation: | SONG Tao,ZENG Yuan,XU Jia-dong(School of Electronic , Information,Northwestern Polytechnical University,Xi'an Shanxi 710072,China) |
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| Abstract: | For a time-varying MIMO wireless digital channel, an inverse filter algorithm is used at channel receiving end to get the channel pulse response function. Taking the function as initial value, a particle filter algorithm is utilized to accomplish the MIMO channel tracking. The proposed algorithm uses simultaneously the signal time diversity information as well as the signal space diversity information. Computer simulations illustrate that the proposed algorithm can achieve less channel error compared with u... |
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| Keywords: | MIMO Particle filter Blind channel tracking |
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