SIGNAL GENERATING METHOD AND SIGNAL GENERATING APPARATUS

摘要

A transmission method for simultaneously transmitting first and second modulated signals at the same frequency, wherein precoding matrixes fixed to the two signals are used to perform the precoding and wherein the phases of at least one of the first or second modulated signals are regularly switched for the transmission. In this case, it is arranged that the power ratio of a plurality of signals to be transmitted from a plurality of antennas in the same frequency band at the same time be different from the power ratio of a plurality of pilot signals to be transmitted from the plurality of antennas in the same frequency band at the same time, whereby the estimation precision of channel estimation at a receiving apparatus can be improved.