Abstract: In this paper, an improved algorithm is proposed for the single-carrier transport mode channel in digital television terrestrial multimedia broadcasting (DTMB) Standard. Based on the research to the DTMB single-carrier transport mode frame structure and the process of receiving-processing system, the shortage in the current algorithms for the channel estimation on the PN sequence moving correlation is indicated. According to the results of simulation, it is shown that the improved algorithm is better than the common one when the signal to noise ratio (SNR) is greater 20 dB.