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基于分段模型的OFDM时变信道估计

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摘要 文章提出了一种二次多项式模型对信道的时变特征进行逼近,并与现有的两种分段线性模型的抗ICI性能做了比较分析。然后利用导频序列在不同的模型下做信道的时域估计,对其在双选择信道下的误码性能做了仿真比较。分析表明,二次多项式模型较一斜率模型的抗干扰和噪声性能有所改善,在较高信噪比环境中能够大大减弱多普勒频移带来的ICI影响。最后,比较了基于分段模型的时域估计和基于DFT的频域估计。
出处 《移动通信》 2009年第22期20-23,共4页 Mobile Communications
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参考文献6

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