|
|||||
|
|
| 基于变换域的OFDM信道估计算法分析 | |
| 引用本文： | 王圆晨,袁雪莲,段红光.基于变换域的OFDM信道估计算法分析[J].电视技术,2013,37(11). |
| 作者姓名： | 王圆晨 袁雪莲 段红光 |
| 作者单位： | 1. 重庆邮电大学通信与信息工程学院,重庆,400065 2. 重庆医科大学公共卫生与管理学院,重庆,400016 3. 重庆重邮信科通信技术有限公司,重庆,400065 |
| 基金项目： | 国家新一代宽带无线移动通信网重大专项 |
| 摘 要： | 首先对目前OFDM系统中常用的信道估计算法进行了介绍,其次对离散采样信道做出说明,并以此为基础,着重分析传统的基于离散傅里叶变换的信道估计滤波算法,即对接收导频LS(最小二乘)算法估计,通过IDFT转换到时域滤波后,由DFT转换到频域获取信道系数.最后给出了一种基于变换域滤波估计算法.由理论分析和工程实践平台中的仿真验证得出,基于提出的滤波矩阵,此DFT变换域算法性能较传统的DFT滤波方法有较大提升. |
| 关 键 词： | 离散傅里叶变换 正交频分复用 变换域 信道估计 滤波 |
| 收稿时间： | 2012/10/27 0:00:00 |
| 修稿时间： | 2012/11/17 0:00:00 |
Analysis of OFDM Channel estimation based on Transforming Domain |
|
| wangyuanchen,Yuan Xuelian and duanhongguang.Analysis of OFDM Channel estimation based on Transforming Domain[J].Tv Engineering,2013,37(11). | |
| Authors: | wangyuanchen Yuan Xuelian and duanhongguang |
| Affiliation: | Chongqing University of Posts and Telecommunications,School of Public Health Administration, Chongqing Medical University,Chongqing CYIT Communication Technologies Co., Ltd |
| Abstract: | Firstly, we give an overview of channel estimation in OFDM systems, then illuminate discrete-sampling channel. Secondly, the conventional DFT(Discrete Fourier Transform, DFT) algorithm will be explained based on discrete-sampling channel, the received pilot-aided in frequency domain after LS(Least Square algorithm), is converted to time domain based on IDFT . Finally , based on transforming domain we put forward a channel estimation algorithm associated with suitable filter matrix. Notice the engineering meaning the simulation indicate that the proposed channel estimator better than the traditional one. |
| Keywords: | DFT OFDM Transforming Domain channel estimation filter |
| 本文献已被 万方数据 等数据库收录！ | |
| 点击此处可从《电视技术》浏览原始摘要信息 | |
| 点击此处可从《电视技术》下载全文 | |