| 基于非零导频子载波的移动WiMAX信道估计和插值研究 |
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| 引用本文： | 黄秋宴,谢显中,董雪涛.基于非零导频子载波的移动WiMAX信道估计和插值研究[J].重庆邮电大学学报(自然科学版),2009,21(1):23-26. |
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| 作者姓名： | 黄秋宴 谢显中 董雪涛 |
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| 作者单位： | 重庆邮电大学,个人通信研究所,重庆,400065 |
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| 基金项目： | 国家自然科学基金，航天预研项目 |
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| 摘 要： | 在M.1225车速120 km/h信道模型下, 根据移动WiMAX的移动性和前导码的结构特点，利用非零导频子载波进行信道估计。探讨了2种信道估计算法和3种插值技术，并对其中的Cubic插值技术进行改进以降低计算复杂度。经仿真发现利用LS算法和Cubic简化插值技术进行信道估计能很好地实现性能与复杂度的折中，在实际系统中可获得满意的BER性能。
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| 关 键 词： | 信道估计 LS算法 信道插值 |
| 收稿时间： | 2008/6/16 0:00:00 |
Study of channel estimation and interpolation based on non-zero pilot sub-carrier in mobile WiMAX system |
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| HUANG Qiu-yan,XIE Xian-zhong,DONG Xue-tao.Study of channel estimation and interpolation based on non-zero pilot sub-carrier in mobile WiMAX system[J].Journal of Chongqing University of Posts and Telecommunications,2009,21(1):23-26. |
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| Authors: | HUANG Qiu-yan XIE Xian-zhong DONG Xue-tao |
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| Institution: | Institute of Personal Communication, Chongqing University of Posts and Telecommunications, Chongqing 400065, P.R.China |
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| Abstract: | The non-zero pilot sub-carriers were used to estimate channel response curve under the M.1225 Vehicular Test A channel model according to the mobility and preamble structure of the mobile WiMAX. Two channel estimation algorithms and three channel interpolation technologies were discussed. And the traditional cubic interpolation technology was simplified to reduce the system complexity. The simulation discovers that using the LS algorithm and the simplified cubic interpolation technology to estimate channel can obtain the satisfied BER performance and achieve the balance between the performance and the algorithm complexity in the actual system. |
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| Keywords: | IEEE802 16e LMMSE |
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