| 摘要 |
PROBLEM TO BE SOLVED: To improve the performance of demodulation reference signal on a selective channel in a time region or a frequency region.SOLUTION: After receiving a signal multiplexed with plural layers, in the received signal, signals mapped to each of plural sub-carriers included in a first sub-carrier group is multiplied by a chip in the rows included in a first orthogonal matrix to thereby demultiplex a demodulation reference signal for each layer included in the first layer group. By multiplying the signals mapped to each of plural sub-carriers included in the second sub-carrier group by a chip of each row of a second orthogonal matrix to demultiplex demodulation reference signals for each layer included in a second layer group. |
