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MIMO-OFDM有限反馈系统中基于非线性插值的波束成形

DOI: 10.13190/jbupt.200806.42.195, PP. 42-45

Keywords: 波束成形,有限反馈,多输入多输出,非线性插值,正交频分复用

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Abstract:

为降低多输入多输出正交频分复用(MIMO-OFDM)系统选取波束成形向量的计算复杂度和反馈量,提出一种基于非线性插值的波束成形方法,即在参考位置子载波的波束成形向量内插出非参考位置子载波的波束成形向量.分析和仿真结果表明,在较小码书的情况下,该方法的性能优于基于量化的最优波束成形方法,并且反馈量和计算复杂度也显著降低;而与基于线性插值和测地线插值的波束成形方法相比,该方法在同样的反馈量下具有更好的性能.

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