Method and apparatus for feeding back channel state information

摘要

In solutions provided in embodiments of the present application, a second orthogonal basis vector group and a group number of the second orthogonal basis vector group are determined according to a pre-defined first basis vector group, a third orthogonal basis vector group corresponding to each data layer is determined according to the second orthogonal basis vector group, then a second-level code word of each data layer is calculated separately, and the group number of the second orthogonal basis vector group, the third orthogonal basis vector group corresponding to the each data layer, and the second-level code word corresponding to the each data layer are sent to a base station, so that the base station may synthesize a multi-layer code word.

主权项

1. A method for feeding back channel state information, the method comprising:
determining a second orthogonal basis vector group and a group number of the second orthogonal basis vector group according to a pre-defined first basis vector group, wherein each basis vector of the first basis vector group is a Kronecker product of basis vectors corresponding to at least two directions of a horizontal direction, a vertical direction, and a polarization direction; determining a third orthogonal basis vector group corresponding to each data layer according to the second orthogonal basis vector group, wherein in the third orthogonal basis vector groups corresponding to the data layers, a number of vectors in at least one of the third orthogonal basis vector groups is greater than 1; calculating a second-level code word of each data layer separately according to the third orthogonal basis vector group corresponding to the each data layer; and sending the group number of the second orthogonal basis vector group, the third orthogonal basis vector group corresponding to the each data layer, and the second-level code word corresponding to the each data layer to a base station, so that the base station may synthesize a multi-layer code word.