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| 一种基于导频的OFDM系统信道估计方法 | |
| 引用本文： | 王新征,杜岩,张永生.一种基于导频的OFDM系统信道估计方法[J].系统仿真学报,2006,18(11):3212-3216. |
| 作者姓名： | 王新征 杜岩 张永生 |
| 作者单位： | 1. 东南大学移动通信国家重点实验室,江苏,南京,210096 2. 山东大学信息科学与工程学院,山东,济南,250100 3. 上海交通大学图像通信与信息处理研究所,上海,200240 |
| 基金项目： | 国家自然科学基金;上海贝尔阿尔卡特与东南大学校科研和教改项目 |
| 摘 要： | 提出一种使用矩形导频图案的OFDM信道估计方法。接收端首先在频率方向估计信道,然后在时间方向插值。该方法仅需累加和少量乘法运算就能估计出信道冲激响应,复杂度低,实时性高。在未编码16QAM-OFDM系统中,通过仿真将提出的方法与线性、cubic和MMSE插值法进行均方误差和误比特率的比较。结果表明该方法性能优于前两者,接近后者。 |
| 关 键 词： | 正交频分复用(OFDM) 信道估计 矩形导频图案 离散傅立叶变换(DFT) |
| 文章编号： | 1004-731X（2006）11-3212-05 |
| 收稿时间： | 2005-08-16 |
| 修稿时间： | 2006-03-16 |
Pilot-Based Channel Estimation Method for OFDM Systems |
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| WANG Xin-zheng,DU Yan,ZHANG Yong-sheng.Pilot-Based Channel Estimation Method for OFDM Systems[J].Journal of System Simulation,2006,18(11):3212-3216. | |
| Authors: | WANG Xin-zheng DU Yan ZHANG Yong-sheng |
| Institution: | 1.National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China; 2.School of Information Science and Engineering, Shandong University, Jinan 250100, China; 3.Institute of Image Communication and Information Processing, Shanghai Jiaotong University, Shanghai 200240, China |
| Abstract: | A channel estimation method for OFDM systems using rectangular pilot pattern was proposed. Receiver first estimates the channel in frequency direction and then interpolates the channel in time direction. Only additions and few multiplications are required to obtain channel impulse response. This method has low complexity and high real-time property. In uncoded 16QAM-OFDM systems, we compare the proposed method with linear, cubic and MMSE interpolator in mean square error and bit error rate through simulations. The results show the proposed method is better than the linear and cubic interpolator, and close to the MMSE interpolator in performance. |
| Keywords: | orthogonal frequency division multiplexing (OFDM) channel estimation rectangular pilot pattern discrete Fourier transform (DFT) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |