| MIMO-OFDM系统中基于二次内插的信道估计算法 |
| |
| 引用本文： | 马卓,袁伟,杜栓义,王新梅.MIMO-OFDM系统中基于二次内插的信道估计算法[J].吉林大学学报(工学版),2011(Z1):304-308. |
| |
| 作者姓名： | 马卓 袁伟 杜栓义 王新梅 |
| |
| 作者单位： | 西安电子科技大学ISN国家重点实验室;西安新邮通信设备有限公司 |
| |
| 基金项目： | “973”国家重点基础研究发展规划项目(2010CB328300);国家自然科学基金项目(60902039) |
| |
| 摘 要： | 在独立时频块的导频插入方式下,给出了一种适用于导频数小于多项式模型参数情况的二次内插算法。该算法先利用插值的LMMSE滤波进行一次内插,再利用多项式模型进行二次内插。仿真结果证明:该算法可以适应不同的移动速度,特别是在车载信道模型下,该算法在大信噪比下的误码性能相对于一维线性内插算法可以得到2～3dB的增益。
|
| 关 键 词： | 通信技术 信道估计 独立时频块 多项式内插 二次内插 |
Channel estimate algorithm based on twice interpolation in MIMO-OFDM systems |
| |
| MA Zhuo,YUAN Wei,DU Shuan-yi,WANG Xin-mei.Channel estimate algorithm based on twice interpolation in MIMO-OFDM systems[J].Journal of Jilin University:Eng and Technol Ed,2011(Z1):304-308. |
| |
| Authors: | MA Zhuo YUAN Wei DU Shuan-yi WANG Xin-mei |
| |
| Affiliation: | 1(1.State Key Lab of ISN,Xidian University,Xi’an 710071,China;2.Xi’an New Postcom Communication Equipment Ltd.Co.,Xi’an 710075,China) |
| |
| Abstract: | Under the single time-frequency chuck scenario,a twice interpolation algorithm was given,which can be applied in such situation that the number of pilot symbols are fewer than that of the parameters of the polynomial model.The LMMSE filter with interpolation was used by proposed algerithm as the first interpolation step,followed by a polynomial interpolation as the second interpolation step.Simulation result shows that the proposed algorithm can be applied to different velocities of receiver.Especially Under the vehiclular channel model,the proposed algorithm can achieve 2~3 dB BER gain than one-dimensional linear interpolation algorithm for large SNR. |
| |
| Keywords: | communication channel estimate single time-frequency chuck polynomial interpolation twice interpolation |
| 本文献已被 CNKI 等数据库收录！ |
