Section: 5.3.3A.2 Precoding for spatial multiplexing
Content: Precoding for spatial multiplexing is only used in combination with layer mapping for spatial multiplexing as described in clause 5.3.2A.2. Spatial multiplexing supports or antenna ports where the set of antenna ports used for spatial multiplexing is and , respectively. Precoding for spatial multiplexing is defined by where , . The precoding matrix of size is given by one of the entries in Table 5.3.3A.2-1 for and by Tables 5.3.3A.2-2 through 5.3.3A.2-5 for where the entries in each row are ordered from left to right in increasing order of codebook indices. Table 5.3.3A.2-1: Codebook for transmission on antenna ports Table 5.3.3A.2-2: Codebook for transmission on antenna ports with Table 5.3.3A.2-3: Codebook for transmission on antenna ports with Table 5.3.3A.2-4: Codebook for transmission on antenna ports with Table 5.3.3A.2-5: Codebook for transmission on antenna ports with