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Training Aided Frequency Offset Estimation for MIMO OFDM Systems via Polynomial Rooting

机译:通过多项式生根训练MIMO OFDM系统的辅助频率偏移估计

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In this paper, we investigate training aided frequency offset estimation for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems via polynomial rooting over frequency selective fading channels. By designing the training sequences properly, both integer and fractional carrier frequency offsets (CFO) can be estimated from the polynomials corresponding to the cost function. Moreover, we show through analysis that rooting the cost function is equivalent to rooting the first-order derivative of the cost function in the considered MIMO case. Simulation results verify the good performance of our new CFO estimator and the corresponding analytical results.
机译:在本文中,我们通过频率选择性衰落通道通过多项式生根研究了多输入多输出(MIMO)正交频分复用(OFDM)系统的训练辅助频率偏移估计。通过正确地设计训练序列,可以从对应于成本函数的多项式估计整数和分数载波频率偏移(CFO)。此外,我们通过分析表明,生根函数等同于植根于所考虑的MIMO案例中的成本函数的一阶导数。仿真结果验证了我们新的CFO估计和相应的分析结果的良好表现。

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