Hello everyone,
I am working on a project to realize 802.11p transmission and receiving
using USRP N210.My daughterboard is XCVR2450.
I found some codes in the following page, which can sever as an IEEE
802.11a/g/p OFDM reciever
It also has some publishings such as
I read their paper and it is obvious that they can receiver 802.11
signals.
I set gain to 60,and f 2.437GHz in order to get the wifi in my
office.But after trying many times, I can only get the wrong crc, with
type and address of the frame. I can’t get what is in the frames even I
force the crc to be correct in order to run the codes after the
crc_check. Do I run it in a wrong way? Could any body find where the
problem is? I am new to gnuradio, and any help is appreciated. Thanks so
much 
what is on the terminal:
new mac frame (length 387)
duration: 1a d5
frame control: 1f 58 (DATA)
Subtype: CF-ACK
seq nr: 802
mac 1: 84:c6:c0:28:d5:ff
mac 2: e7:a4:88:3c:da:4b
mac 3: 63:3e:1:c5:aa:28
crc wrong
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
new mac frame (length 387)
duration: 41 b2
frame control: a1 ff (unknown)
crc wrong
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
new mac frame (length 123)
duration: 75 fb
frame control: 98 30 (MANAGEMENT)
Subtype: Reassociation Response
seq nr: 1185
mac 1: 62:a4:90:cf:3:a
mac 2: e3:ac:b4:33:3:65
mac 3: 1b:ea:ed:c0:5e:14
crc wrong
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
as you see, I can get nothing except “0”