 a code block Kcb is 8448 bits for LDPC base graph 1, 3840 for LDPC base graph 2. The code blocks whose size exceeds these limits would be segmented and appended with an additional CRC of length LCRC = 24 bits. The input bits to the code block segmentation denoted as bo, b1 where number of bits in the TB (including the CRC), are then processed by code block segmentation 488 Chapter 4 PDSCH data (transport block) b(cw) Transport block CRC attachment Scrambling TS 38.212 Section 7.2.1 TS 38.211 Section 7.3.1.1 bo,b,...BB-1 b (cw) (0),b (cw) (1), (N LCW) LDPC base graph selection Modulation TS 38.212 Section 7.2.2 TS 38.211 Section 7.3.1.2 d(cw) (0), Code block segmentation and code block CRC attachment Layer mapping TS 38.211 Section 7.3.1.3 TS 38.212 Section 7.2.3 Channel coding Antenna mapping TS 38.212 Section 7.2.4 TS 38.211 Section 7.3.1.4 Rate matching Resource mapping TS 38.212 Section 7.2.5 mapping to VRB TS 38.211 Section 7.3.1.5 Code block concatenation Resource mapping TS 38.212 Section 7.2.6 VRB-to-PRB mapping TS 38.211 Section 7.3.1.6 go, ,81 8G-1 Figure 4.34 Physical layer processing of PDSCH [6,30]. R(bit/s) Base graph 1 Base graph 2 K(bit) Figure 4.35 Usage of NR LDPC base graphs [55]. New Radio Access Physical Layer Aspects (Part 2) 489 Table 4.7: NR low-density parity check code lifting factors [7]. Set Indexiis Set of Lifting Sizes Z {2,4,8,16,32,64,128,256} {3,6,12,24,48,96,192,384} {5,10,20,40,80,160,320} {7,14,28,56,112,224} {9,18,36,72,144,288} {11,22,44,88,176,352} {13,26,52,104,208} {15,30,60,120,240} Table 4.8: NR low-density parity check base graphs parameters [7]. Parameter Base Graph 1 Base Graph 2 Minimum code rate Rmin Base matrix size 46 X 68 42 X 52 Number of systematic columns Maximum information block size Kcb 8448( = 22 (384) 3840( = X384) Number of non-zero elements followed by code block CRC attachment, resulting in the output bits where index l <0 represents the code block number and K denotes the number of bits for 1th code block. The total number of code blocks C is determin