3.2 Illustration of downlink blocks diagram of up&down link of LTE

3.2 Illustration of downlink blocks diagram of up&down link of LTE:

As shown in figure (3.3 and 3.4) the transport block is enter certain number of blocks beginning from the CRC and ending by the OFDM transmitter to be processed to face some of the channel difficulties and to decrease the bit error rate or to increase the bit rate or to provide some of the additional services,And ending with the OFDM transmitter.

Figure 3.1---LTE downlink physical layer. --- Transmitter

Figure 3.2--- LTE downlink physical layer. --- Transmitter