说明：  采用MUSIC进行频率估计，并介绍一种有效的改进的MUSIC。此外，还仿真了结合线性预测的MUSIC（LMUSIC）和加窗的MUSIC（WMUSIC），以及两者组合（LWMUSIC），最后比较性能。
(Frequency estimation using MUSIC and introduce an effective improvement MUSIC. In addition, a combination of linear predictive simulation of MUSIC (LMUSIC) and windowing of MUSIC (WMUSIC), and a combination of both (LWMUSIC), final performance comparison.)