Help needed in selection of FPGA for WLAN design

[Altera_Forum]

Knowing Altera has tape out so many FPGAs, may I learn from the Gurus here about which lowest-end FPGA is sufficient to be coded with the entire wireless router (2 antennas) into it?

[Altera_Forum]

It's difficult to answer without more details about what you want to do. 

I think the first question is why do you need an FPGA at all? Surely there are lots of SoCs around that would be more appropriate to do a generic WLAN router. FPGAs are mostly interesting when you need to add some specific hardware functions you wouldn't find on already available ASICs.