aling; otherwise NID Ncell NRNTI corresponds to the RNTI associated with the PDSCH transmission [6]. The scrambled bit sequence (N(CW) 1) is modulated using one of the modulation schemes, for example, QPSK, 16QAM, 64QAM, or 256QAM. The complex- valued modulation symbols for each of the codewords that are going to be transmitted are mapped to one or several layers for spatial multiplexing. As shown in Table 4.10, the (E+!)() (!)(E)* (!E)(O)==()()) (Z+!E)(1)P: = (1)(s)* (L+!E)(U)P=()() (!E)(L)P=(1)(E)X = (L+!E)(OP=()(1) = (1)(+) (!E)(1)P =(1)(z) = (L+!E)(OP=()(1) (!E)(OP=(!)()) Buiddew [9] leneds Buiddew 01 PoMay th the New Radio Access Physical Layer Aspects (Part 2) 495 complex-valued modulation symbols corresponding to codeword CW are mapped to layers x(i) = where V denotes the number of layers and is the number of modulation symbols per layer [6]. The block of vectors 1, mapped antenna ports as follows: The set of antenna ports {po,P1,..., Pv-1} are determined according to the procedure specified in [7]. For each antenna port that is used for transmission of the physical shared channel, the prop- erly scaled block of complex-valued symbols are sequen- tially mapped to the virtual resource elements (k',1) allocated for transmission of PDSCH that have not been designated for reference signals. Any common resource block partially or fully overlapping with an SS/PBCH block is considered occupied and is not used for transmission. The virtual resource elements are mapped in frequency-first manner as illus- trated in Fig. 4.39. The virtual resource blocks are mapped to physical resource blocks in Noninterleaved y(Po'(i) Resource block VRB bundle 1(Pvi) (i) Interleaved f(j)==rc+c; j=cR+r; r = 0,1,..., R - 1; c = 0,1,...,C - 1; Figure 4.39 Mapping to VRBs and from VRBs to PRBs [6]. 496 Chapter 4 form of either non-interleaved or interleaved, wherein the non-interleaved is the default mapping scheme. For non-interleaved VRB-to-PRB mapping, the virtual resource block n is mapped to physi- cal resource block n, except for 