I use Xilinx Kintex UltraScale+ FPGA KCU116 Evaluation Kit and I implement an OFDM block designed to 100 MHz bandwidth. This OFDM block will be then addressed successively three canals DC to 100 MHz, 100 MHZ to 200 MHz and 200 MHz to 300 MHz.
The obvious implementation of that is to use A/D converter followed by an UP/Down converter where it local oscillator is changed to select successively three canals.
My question is; what can I do in the FPGA:
to be able to use the UP/Down converter with fixed local oscillator enabling DC to 300 MHz bandwidth
and that the fpga provides the ofdm at the right channel