Based on DRM standard, this paper mainly investigates OFDM channel estimation methods which are applied to DRM system, and proposes estimation schemes for different AM broadcast channel models. 本文以DRM标准为基础,从实际应用的角度出发,主要研究了适用于DRM系统的OFDM信道估计算法,并针对不同的广播信道模型提出了相应的估计方案。