Dear Baha,

you can your self generate frames of OFDM symbols by building an OFDM transmitter according to the ITU standards.

For this please follow the papers in the link: https://www.researchgate.net/publication/320210852_Software_implementation_of_LTE-advanced_using_Matlab_Simulink:

and the papein the link:Article FPGA Implementation of LTE-Advanced Downlink Physical Layer ...

Best wishes

Sir, i will go through it once. Thank u sir

You can easily generate a set of binary data with how many subcarriers that you want to include. then follow the S/P, multiplexing and then modulation. I will try later to provide a simple Matlab script to give you an example. Good Luck