Up/down Mixer transceiver

[Mondher]

Hi everybody,

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:

1. to be able to use the UP/Down converter with fixed local oscillator enabling DC to 300 MHz bandwidth  
2. and that the fpga provides the ofdm at the right channel

Thank for your help

[nathanx]

I'm not very sure the question, here are my thoughts.

1) One OFDM channel occupies 100MHz, three channels have total 300MHz, this is correct.

2) You can do spectrum shifting with Xilinx DDS IP.

3) DDS provides number of channels which should meet your requirements.