Hi every one.... My scenario is as follows.

I want to recieve a satellite data that is being transmitted at 1Gbps speed with the help of SDR boards whose ADC has the sampling rate of only 120 MSPS. So, we need to use multiple SDR boards for that to implement.

Could any body tell me is there is formula or procedure to calculate the number of SDR boards required to achieve the 1Gbps data where each SDR board is limited by its sampling rate.