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[Discuss-gnuradio] Questions about bbn_80211b_rx.py
From: |
Kexiong Zeng |
Subject: |
[Discuss-gnuradio] Questions about bbn_80211b_rx.py |
Date: |
Wed, 5 Dec 2012 17:16:48 -0500 |
Hi all,
I am implementing the BBN80211 projects now. I have the following questions:
I run my receiver (with transmitter off): ./bbn_80211b_rx.py -d 4 -f 2.437G -b -g 100 -v
The result is:
address@hidden:~/Projects/bbn_80211/branches/usrp2_version/gr-bbn/src/examples$ sudo ./bbn_80211b_rx.py -d 4 -f 2.437G -b -g 100 -v
adc frequency = 100000000
decimation frequency = 4
input_rate = 25000000
gain = 100.0
desired freq = 2437000000.0
baseband frequency 0.0
dxc frequency -37000000.0
>>> gr_fir_ccf: using SSE
Recieved (short) header!
signal: 0x37
service: 0xD9
length: 0xB5D6
crc: 0xAA78
Calculated crc: 0x1DD1
*** BAD CRC ***
Recieved header!
signal: 0xF0
service: 0xAF
length: 0x7367
crc: 0x9C3D
Calculated crc: 0xA7A4
*** BAD CRC ***
Recieved header!
signal: 0xB4
service: 0x4F
length: 0xE127
crc: 0x42E5
Calculated crc: 0x3BA3
*** BAD CRC ***
Recieved (short) header!
signal: 0x0A
service: 0x88
length: 0xBF87
crc: 0xB627
Calculated crc: 0x66E6
*** BAD CRC ***
As
you can see, I always fail the CRC check and cannot decode the 80211
packets successfully.
I saw some people encountered the same problems as mine but no solutions were posted. Can anyone help?
Many thanks!
Curtis
- [Discuss-gnuradio] Questions about bbn_80211b_rx.py,
Kexiong Zeng <=