| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission method for simultaneously transmitting plural modulation signals from plural antennas capable of improving the reception quality under circumstances where a direct wave is dominant.SOLUTION: The transmitter performs precoding on all data symbols S(t) and S(t) which are used for transmitting data of modulation signals 307A and 307B to be transmitted. The transmitter interchanges all of the precoding matrixes W(4i+1)-W(4i+3) so that the precoding matrix which is used for precoding each data symbol and a precoding matrix which is used for precoding a data symbol neighboring the data symbol in a frequency axis direction and in a time axis direction are different, to transmit a modulated signal including the data symbol disposed therein. |
