| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transmission method for spatial multiplex transmission for determining a transmission weight by a small amount of calculation; and its transmission device. Ž<P>SOLUTION: In the transmission device for spatial multiplex transmission executing transmission by L pieces of spatial multiplexes by using N pieces of antenna elements, a transmission coefficient matrix estimation part 170 estimates a transmission coefficient matrix from a received signal; and a transmission weight determination part 180 calculates a complex conjugate transposed matrix of the estimated transmission coefficient matrix, and outputs corresponding column vector to multi-beam formation parts 131-13L as a transmission weight. A serial-parallel conversion part 110 executes serial-parallel conversion to an input signal to be transmitted to be output to transmission parts 121-12L. The multi-beam formation parts 131-13L divide an input signal from the transmission parts 121-12L into N pieces of signals, carries out weighting determined by the transmission weight determination part 180 thereto, and thereafter output the weighted signals to corresponding ports of N pieces of signal synthesization parts 141-14N. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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