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Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal
From: |
Bastian Bloessl |
Subject: |
Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal |
Date: |
Mon, 06 Oct 2014 08:12:38 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 |
On 10/05/2014 01:37 PM, Ernest Szczepaniak wrote:
Greetings,
Ok, got this. After some test's i think that the problem is with my
descrambler (de-interleaver and Viterbi seems to be ok). Currently, im using
Matlab's one provided by comm. toolbox.
Is it correct to use 127-bit length pre-defined scrambling/descrambling seq?
No, this is an example output if you initialize the scrambler with
0b1111111.
(i found it in 802.11 standard). Or it sould be only implemented as a shift
register with poly 1+x4+x7?
yes.
And last one question:
In any of frames generated by your grc script, there sould be 16x"0" in
SERVICE field (as it a part of PLCP Header)
yes.
- becouse a typical wlan card is
able to decode it, it is following the 802.11 standard - am I right?
No. It's following the standard and, thus, a normal card can decode it :-)
Best,
Bastian
Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal, Ernest Szczepaniak, 2014/10/05
- Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal,
Bastian Bloessl <=
Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal, Ernest Szczepaniak, 2014/10/06
Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal, Ernest Szczepaniak, 2014/10/06
Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal, Ernest Szczepaniak, 2014/10/07