SIGNAL GENERATION METHOD AND SIGNAL GENERATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a transmission method to simultaneously transmit plural modulation signals from plural antennas capable of improving reception quality under a circumstance that direct waves are dominant.SOLUTION: The transmission method is a method to simultaneously transmit a first modulation signal and a second modulation signal with identical frequency which are modulated by modulation systems different from each other. Both signals are subjected to a power change different from each other, and subsequently subjected to precoding by using a fixed precoding matrix, and are transmitted while regularly switching the phase of at least one of the first modulation signal and the second modulation signal. With this, the quality of the data received by a receiver is improved.SELECTED DRAWING: Figure 100