提出了一种适用于正交频分复用通信系统的非盲信道估计算法。与传统算法在保护间隔内插入循环前缀不同 ,该算法在保护间隔内插入参考信号 ,利用该参考信号实现信道频域估计和信道失真补偿。理论分析和计算机仿真表明 :该算法与传统算法相比误码性能接近 ,而信道传输效率提高约 2 0 %。因此 ,该算法可适用于高速无线通信系统 A non-blind channel estimation algorithm suitable for orthogonal frequency division multiplexing communication system is proposed. Different from the traditional algorithm which inserts the cyclic prefix into the guard interval, the algorithm inserts the reference signal within the guard interval and uses the reference signal to realize the channel frequency domain estimation and channel distortion compensation. The theoretical analysis and computer simulation show that the proposed algorithm is close to the error performance compared with the traditional algorithm and the channel transmission efficiency is improved by about 20%. Therefore, the algorithm can be applied to high-speed wireless communication system