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用于MIMOOFDM系统的定时同步算法

DOI: 10.13190/jbupt.200901.118.008, PP. 118-121

Keywords: 多输入多输出,正交频分复用,定时同步,恒幅零自相关码

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Abstract:

提出了一种用于多输入多输出正交频分复用(MIMOOFDM)系统的定时同步算法。算法利用恒幅零自相关码(CAZAC)的自相关特性及自反特性生成用于定时同步的训练序列,在接收端采用对称相关器计算接收信号相关值以确定定时位置。仿真结果表明,本算法无论是在集中式MIMO系统或是分布式MIMO系统中都能有效的进行定时同步,尤其用于分布式系统时,新算法能更有效的估计出天线间的延时。

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