A random stream of bits the size of the desired transport block undergoes

Downlink Shared Channel (DL-SCH) coding to rate match the transport block

to the available PDSCH bits. Scrambling, modulation, precoding and layer

mapping are then applied to form the complex PDSCH symbols. AWGN is added

to these symbols after which channel decoding and demodulation are

performed to recover the transport block. Using the recovered transport

block a BER curve is plotted for a given range of SNR values.