中文说明：
提出了正交频分复用(OFDM)系统中一种新的载波频偏估计算法L载波频偏估计过程可分为获取和跟踪, 其中, 获取过程和时间同步是同时完成的L新算法可实现的最大载波频偏获取范围是整个信号带宽的一半L新的跟踪算法是一个最大似然算法, 在加性白噪声高斯信道(AW GN ) 下, 当N (训练序列长度的一半) 等于128 时, 其性能比Schmidl 算法提高约7127dB在多经信道下, 当 信噪比不是很高时, 新算法仍具有优势。
English Description：
A new carrier frequency offset estimation algorithm in orthogonal frequency division multiplexing (OFDM) system is proposed. The process of L carrier frequency offset estimation can be divided into acquisition and tracking. The acquisition process and time synchronization are completed at the same time. The maximum carrier frequency offset acquisition range realized by L new algorithm is half of the whole signal bandwidth. L new tracking algorithm is a maximum likelihood algorithm. In the additive white noise Gaussian channel (AW GN), the,