Patent ID: 8488564

Claim:
A method for mapping a codeword to a layer in a multi-input multi-output system, comprising: grouping current layers in a multi-input multi-output system according to a number of current codewords, and mapping each codeword to a layer in a group to which the codeword corresponds, wherein a number of the current layers in the multi-input multi-output system is 4 or more than 4; the number of layers supported by the multi-input multi-output system is 8 at most; under the condition that the number of the current codewords is 2, when the number of the current layers in the multi-input multi-output system is 6, after the grouping, the numbers of layers in each group are 3, 3 respectively; when the number of the current layers in the multi-input multi-output system is 8, after the grouping, the numbers of layers in each group are 4, 4 respectively; when the number of the current layers in the multi-input multi-output system is 5, after the grouping, the numbers of layers in each group are 2, 3 respectively; and when the number of the current layers in the multi-input multi-output system is 7, after the grouping, the numbers of layers in each group are 3, 4 respectively.