According to some embodiments, a method for use in a wireless transmitter of encoding a transport block comprises, upon determining a code rate for transmitting a transport block is less than or equal to R_threshold (R_threshold is between 1/5 and 1/3), selecting new radio (NR) low-density parity-check (LDPC) base graph 2 for encoding the transport block. Otherwise, the method comprises selecting NR LDPC base graph 1 for encoding the transport block, unless a transport block size (TBS) of the transport block is less than or equal to a size threshold (X) and a code rate for transmitting the transport block is less than or equal to 2/3, in which case the method may comprise selecting base graph 2. The method further comprises encoding the transport block using the selected base graph and transmitting the encoded transport block to a wireless receiver.
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