| MB-OFDM系统中基于导频的信道估计 |
| |
| 引用本文： | 王荣,郑继禹,林基明.MB-OFDM系统中基于导频的信道估计[J].桂林电子科技大学学报,2005,25(3):1-5. |
| |
| 作者姓名： | 王荣 郑继禹 林基明 |
| |
| 作者单位： | 桂林电子工业学院,通信与信息工程系,广西,桂林,541004;桂林电子工业学院,通信与信息工程系,广西,桂林,541004;桂林电子工业学院,通信与信息工程系,广西,桂林,541004 |
| |
| 摘 要： | 联合信道估计算法以LS(最小二乘)信道估计为基础,并利用MB-OFDM的UWB信道的时域长度特性,最大限度地减少噪声的影响,提高信道估计的精度;然后与数据符号中的导频信号联合估计,跟踪信道的变化,进一步提高信道估计的性能。通过性能仿真,比较LS估计和基于DFT(离散傅立叶变换)的信道估计的系统误码率,结果表明,采用本文的信道估计方法的系统性能有一定程度的改善。
|
| 关 键 词： | 多频带正交频分复用 超宽带 信道估计 无线个域网 |
| 文章编号： | 1001-7437(2005)03-01-05 |
| 修稿时间： | 2005年2月19日 |
A Channel Estimation Method Based on Pilot for MB-OFDM Systems |
| |
| WANG Rong,ZHENG Ji-yu,LIN Ji-ming.A Channel Estimation Method Based on Pilot for MB-OFDM Systems[J].Journal of Guilin Institute of Electronic Technology,2005,25(3):1-5. |
| |
| Authors: | WANG Rong ZHENG Ji-yu LIN Ji-ming |
| |
| Abstract: | Based on the UWB channel in the MB-OFDM system, a novel channel estimation method is proposed. This method exploits the character of the channel's length to diminish the effect of the AWGN, and then, it combines the result with the pilots in the data symbols to scout the change of the channel to enhance precision of the channel estimation. Finally, we have compared the performance of the method with LS and DFT channel estimation method by measuring their bit error rate in the system, and the simulation result indicates that the proposal method can improve the system performance. |
| |
| Keywords: | MB-OFDM UWB Channel Estimation WPAN |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
