| 一种MIMO-OFDM系统信道估计简化方法 |
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| 引用本文： | 张朝龙,邱 昕,陈 杰.一种MIMO-OFDM系统信道估计简化方法[J].现代电子技术,2014(7):1-4,8. |
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| 作者姓名： | 张朝龙 邱 昕 陈 杰 |
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| 作者单位： | 中国科学院 微电子研究所 通信与多媒体SoC研究室,北京100029 |
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| 基金项目： | 国家自然科学基金项目（61201265，61221004和61376027）支持 |
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| 摘 要： | 提出了一种基于MMSE准则的MIMO-OFDM系统信道估计简化方法。该方法将信道估计问题转化为TBT线性方程求解问题,然后利用快速求解算法避免了复杂的矩阵求逆和矩阵相乘,大大降低了实现复杂度。仿真结果表明,相比于传统MMSE算法,该简化算法在降低复杂度的同时仅带来微弱的性能损失。
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| 关 键 词： | MIMO-OFDM 信道估计 TBT 快速求解算法 |
A simplified method for channel estimation of MIMO-OFDM systems |
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| ZHANG Chao-long,QIU Xin,CHEN Jie.A simplified method for channel estimation of MIMO-OFDM systems[J].Modern Electronic Technique,2014(7):1-4,8. |
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| Authors: | ZHANG Chao-long QIU Xin CHEN Jie |
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| Affiliation: | (Communication and Multimedia SoC Lab,Microelectronics Institute of Chinese Academy of Sciences,Beijing 100029,China) |
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| Abstract: | A simplified channel of estimation method for MIMO-OFDM（multiple input multiple output - orthogonal frequen-cy division multiplexing）systems based on MMSE（minimum mean square error）criteria is proposed,which translated the prob-lem of channel estimation into the finding out the solution of TBT（Toeplitz-block-Toeplitz） nonlinear equations. And then com-plex operation of matrix inverse and matrix multiplication can be avoided with fast solution method,which greatly reduced the computation complexity of channel estimation. Simulation results show that,compared with traditional MMSE channel estimation method,the proposed simplified method can reduce computation complexity efficiently with small performance degradation. |
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| Keywords: | MIMO-OFDM channel estimation TBT fast solution method |
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