[Discuss-gnuradio] How to inject fake ofdm data into the gnuradio procedure

[bin zan]

Hi all,
       I have a bunch of complex numbers which are received at an ofdm receiver at earlier time. Later, I would like to insert these numbers into ofdm procedure on gnuradio. Anyone knows which place or which file is the better place I can do that? 


Thanks,
Bin