OFDM Frames for DVB-T

Hi, was wondering if there is a way to create OFDM frames in simulink. I am working on DVB-T signal so my frame is has 68 OFDM symbols with each symbol has 1705 carriers, and in this 1512 are used for data and remaining used for pilot carriers, I can generate the 1705 carriers so one ofdm symbol how can i use them 68 times and create a frame, using the OFDM block in matlab 2014 itself.

Thanks