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应用在OFDM-MIMO系统的低复杂度时域导频方案

DOI: 10.13190/jbupt.201303.1.wangy, PP. 1-6

Keywords: 时域导频,信道估计,正交频分复用,最小二乘估计,线性最小均方误差估计

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Abstract:

提出了一种应用在正交频分复用多天线系统的时域导频方案.该方案能获得较高精度的均方估计性能,导频与有用数据无干扰,且计算复杂度低,多天线场景下,信道估计的性能不受传输天线个数的影响.相比最小二乘估计,该方案只需要对接收信号进行简单的线性相关运算,配合特定的系统参数,能获得较大的信噪比增益;相比线性最小均方误差估计,其仅利用了信道长度信息,性能渐近最优,能获得估计性能与复杂度的折中.

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