rom contents in legacy long preamble is periodic

[ll550]

Hi there,

I just dived into the brilliant project openwifi, and tried to get used to it from a very fundamental place physcal layer. I found a quite interesting thing that the contents in the rom l_ltf_rom.v is periodic. I guess it could be simplified as in l_stf_rom.v.

l_ltf_rom l_ltf_rom (
.addr(preamble_addr[5:0]), #addr(preamble_addr)
.dout(l_ltf)
);

and remove the contents of addr beyond 64 in l_stf_rom.v

I am not very familiar with the WiFi protocol, so It may not be right. If anyone can figure it out, please give me some comments.