An OFDM symbol detection method is provided, which includes receiving OFDM modulated symbols transmitted from multiple transmitting antennas; receiving information on correlation time and/or correlation bandwidth; performing channel estimation on each of a plurality of channels for the multiple transmitting antennas, and conducting smoothing processing on each channel estimation result according to the information on correlation time and/or correlation bandwidth, to obtain channel estimation averages of respective channels; and performing signal detection on the received OFDM symbols by using the channel estimation averages. Both time correlation and frequency correlation are considered in the method.