| 联合白噪声统计估计和卡尔曼滤波的MIMO信道辨识 |
| |
| 引用本文： | 李梦醒,习胜丰,曾专武,刘泽民,程恩. 联合白噪声统计估计和卡尔曼滤波的MIMO信道辨识[J]. 电子技术应用, 2008, 34(5): 96-100 |
| |
| 作者姓名： | 李梦醒 习胜丰 曾专武 刘泽民 程恩 |
| |
| 作者单位： | 北京邮电大学,电信工程学院,北京100876;湖南城市学院,湖南,益阳413000;湖南城市学院,湖南,益阳413000;北京邮电大学,电信工程学院,北京100876;厦门大学,水声通信与海洋信息技术教育部重点实验室,福建厦门361005 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金 |
| |
| 摘 要： | 提出了一种新的时间选择性衰落环境下MIMO信道辨识算法。为了提高信息传输效率,训练序列被直接叠加于信息序列之上。算法将信息符号输出、接收端AWGN和由于采用零中频接收技术而产生的直流偏移当做虚拟的观测噪声,其均值和自协方差均未知。通过联合的递推白噪声统计估计器和卡尔曼滤波器对时变信道进行跟踪,推导了一种计算简单的次优无偏时变白噪声统计估计器。以简单有效的方法抑制直流偏移对辨识精度的影响。仿真结果表明了算法具有良好的性能。
|
| 关 键 词： | 多输入多输出 信道辨识 隐训练序列 白噪声统计估计 卡尔曼滤波 直流偏移 |
| 修稿时间： | 2007-11-11 |
MIMO channel identification using joint white noise statistics estimation and Kalman filtering |
| |
| LI Meng Xing,XI Sheng Feng,ZENG Zhuan Wu,LIU Ze Min,CHENG En. MIMO channel identification using joint white noise statistics estimation and Kalman filtering[J]. Application of Electronic Technique, 2008, 34(5): 96-100 |
| |
| Authors: | LI Meng Xing XI Sheng Feng ZENG Zhuan Wu LIU Ze Min CHENG En |
| |
| Affiliation: | LI Meng Xing1,2,XI Sheng Feng2,ZENG Zhuan Wu2,LIU Ze Min1,CHENG En3 (1. School of Telecommunication Engineering,Beijing University of Posts , Telecommunications,Beijing 100876,China,2. Dept. of Computer Science & Technology,Hunan City university,Yiyang 413000,3. Key Laboratory of Underwater Acoustic Communication , Marine Information Technology,Xiamen Unversity,Xiamen 361005,China) |
| |
| Abstract: | A novel scheme to perform multiple input multiple output (MIMO) channel identification in time -selective fading environments is suggested. In order to improve transmission efficiency, training sequences are arithmetically added to the information symbols. The output of information symbols ,additive white noises and dc -offsets at the receiver are regarded as fiction measurement noise, whose mean and autocovariance are both unknown.A time -varying measurement noise recursive estimator and Kalman filters coo... |
| |
| Keywords: | MIMO channel identification implicit training white noise statistics estimation KF(Kalman filtering) dc-offset |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
