中文摘要：

OFDM（正交频分复用）是第四代移动通信的核心技术之一,在OFDM无线通信系统中,信道估计性能好坏直接影响OFDM系统的性能。本文对OFDM无线通信系统的数据辅助信道估计方法进行了阐述,对其应用环境和性能进行了仿真分析、比较和总结。

英文摘要：

OFDM （Orthogonal Frequency Division Multiplexing） is one of the core technologies of the fourth generation mobile communication. In the OFDM wireless communication system, channel estimation directly af- fects the performance of OFDM system. This paper elaborates the data-aided channel estimation method for OFDM wireless communication system, and analyzes, compares and summarizes its application environment and performance through simulation experiments.