This invention to offer the pre- coding manner for cross polarization antenna array, cross polarization antenna array, to include with the 1st group of the coplanar polarized wave antenna and the 2nd group of the coplanar polarized wave antenna, manner, at least because of one layer of the data stream, following to the choice which is received the step which generates feedback kodobutsuku which includes multiple code words and the step which receives the choice of code word inside feedback kodobutsuku, at least one of step and the data stream which decide the code word which corresponds from feedback kodobutsukuIn order the pre- code to do the layer, it includes with the step which generates pre- coding queue on the basis of the code word which is decided, each code word inside feedback kodobutsuku includes with the 1st coefficient part which corresponds to the coplanar polarized wave antenna of the 1st group and the 2nd coefficient part which corresponds to the coplanar polarized wave antenna of the 2nd group, corresponds to the same layer of the data stream, the 1st coefficient part and, relation of complex scaling exists between the coefficient in the 2nd coefficient part. Corresponding to this, this invention furthermore offers the pre- coda for cross polarization antenna array.
展开▼
