A wireless signal transmitting method in which a single access point transmits a wireless signal on which spatial division multiplexing has been performed to a first receiving station configured in accordance with a first standard and a second receiving station configured in accordance with a second standard that is earlier than the first standard, the wireless signal transmitting method comprising a known signal generating step of generating a known signal that includes L-STF, and the wireless signal transmitting method being characterized by further comprising: a weight calculating step of calculating weight coefficients for subcarriers other than a pilot subcarrier signal based on propagation channel information provided from the first receiving station and propagation channel information provided from the second receiving station; a weight interpolating step of interpolating weight coefficients for the pilot subcarrier signal based on the weight coefficients calculated in the weight calculating step; a weighting processing step of performing weighting on an input signal that includes L-LTF and all signals that follow the L-LTF and include the pilot subcarrier signal based on the weight coefficients for the pilot subcarrier signal interpolated in the weight interpolating step and the weight coefficients for the subcarriers other than the pilot subcarrier signal calculated in the weight calculating step; and a wireless processing step of transmitting a transmission signal obtained by attaching the known signal to the input signal on which the weighting has been performed. a known signal generating step of generating a known signal that includes L-STF, and the wireless signal transmitting method being characterized by further comprising: a weight calculating step of calculating weight coefficients for subcarriers other than a pilot subcarrier signal based on propagation channel information provided from the first receiving station and propagation channel information provided from the second receiving station; a weight interpolating step of interpolating weight coefficients for the pilot subcarrier signal based on the weight coefficients calculated in the weight calculating step; a weighting processing step of performing weighting on an input signal that includes L-LTF and all signals that follow the L-LTF and include the pilot subcarrier signal based on the weight coefficients for the pilot subcarrier signal interpolated in the weight interpolating step and the weight coefficients for the subcarriers other than the pilot subcarrier signal calculated in the weight calculating step; and a wireless processing step of transmitting a transmission signal obtained by attaching the known signal to the input signal on which the weighting has been performed. a weight calculating step of calculating weight coefficients for subcarriers other than a pilot subcarrier signal based on propagation channel information provided from the first receiving station and propagation channel information provided from the second receiving station; a weight interpolating step of interpolating weight coefficients for the pilot subcarrier signal based on the weight coefficients calculated in the weight calculating step; a weighting processing step of performing weighting on an input signal that includes L-LTF and all signals that follow the L-LTF and include the pilot subcarrier signal based on the weight coefficients for the pilot subcarrier signal interpolated in the weight interpolating step and the weight coefficients for the subcarriers other than the pilot subcarrier signal calculated in the weight calculating step; and a wireless processing step of transmitting a transmission signal obtained by attaching the known signal to the input signal on which the weighting has been performed.