Section: 6.3.3 Layer mapping
Content: The complex-valued modulation symbols for each of the codewords to be transmitted are mapped onto one or several layers. Complex-valued modulation symbols for codeword shall be mapped onto the layers , where is the number of layers and is the number of modulation symbols per layer, unless and "MUST interference presence and power ratio (MUSTIdx)" signalled in the associated DCI is '00' for only one codeword in which case , where for the layer for which MUSTIdx is '00', and for the layer for which MUSTIdx is not '00'. The value of is determined from Table 6.3.3-1 using MUSTIdx and the modulation order of the codeword for which MUSTIdx is not '00'. Table 6.3.3-1: Values for