Re: [Discuss-gnuradio] [USRP-users] how to resolve the uhd warning of sample rate

2014-11-29 Thread alok ranjan
Dear Marcus, Thank you so much for your help :). It worked fine. Regards! Alok > Date: Fri, 28 Nov 2014 11:38:29 +0100 > From: marcus.muel...@ettus.com > To: alokranjan...@hotmail.com; discuss-gnuradio@gnu.org; > usrp-us...@lists.ettus.com > Subject: Re: [USRP-users] [Discuss-gnuradio] how to

[Discuss-gnuradio] segfault

2014-11-29 Thread michele
Hi to all. This is my first post here...i hope to have choosen the right place to ask I'm currently trying to compile gqrx and gnuradio...everything went well, but when i run gqrx it won't start and give me this error: gqrx[5865]: segfault at 12d0 ip 7f570ee76d2f sp 7fff60fd9000 err

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Bastian Bloessl
On 2014-11-29 12:49, Isen I-Chun Chao wrote: The long preamble should be the 320-sample one. right? The short preamble is 160 samples (a 16-sample pattern that repeats 10 times) and the long preamble is 160 samples (a 64-sample pattern that repeats 2.5 times) you might want to have a look

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Isen I-Chun Chao
The long preamble should be the 320-sample one. right? *Best Regards,Isen I-Chun Chao* On Sat, Nov 29, 2014 at 6:39 AM, Bastian Bloessl wrote: > > > On 2014-11-29 12:34, Isen I-Chun Chao wrote: > >> Okay, I got it. >> >> One more quick question. >> I have been pretty confused about what the sy

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Bastian Bloessl
On 2014-11-29 12:34, Isen I-Chun Chao wrote: Okay, I got it. One more quick question. I have been pretty confused about what the sync long and sync short are, respectively, responsible for? Sync short is for frame detection and searches for the cyclic pattern of the short preamble (autocorr

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Isen I-Chun Chao
Okay, I got it. One more quick question. I have been pretty confused about what the sync long and sync short are, respectively, responsible for? Thanks. *Best Regards,Isen I-Chun Chao* On Sat, Nov 29, 2014 at 6:29 AM, Bastian Bloessl wrote: > > > On 2014-11-29 12:28, Isen I-Chun Chao wrote:

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Bastian Bloessl
On 2014-11-29 12:28, Isen I-Chun Chao wrote: Hi Bastian, Thanks for your reply. The peaks you mentioned is like the correlation result? Yes, exactly /Best Regards, Isen I-Chun Chao/ On Sat, Nov 29, 2014 at 6:21 AM, Bastian Bloessl mailto:bloe...@ccs-labs.org>> wrote: Hi Isen, O

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Isen I-Chun Chao
Hi Bastian, Thanks for your reply. The peaks you mentioned is like the correlation result? *Best Regards,Isen I-Chun Chao* On Sat, Nov 29, 2014 at 6:21 AM, Bastian Bloessl wrote: > Hi Isen, > > > On 2014-11-29 07:01, Isen I-Chun Chao wrote: > >> Hi, >> I am using gr-ieee-802-11 and putting a c

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Bastian Bloessl
Hi Isen, On 2014-11-29 07:01, Isen I-Chun Chao wrote: > Hi, > I am using gr-ieee-802-11 and putting a custom block, which is > responsible for adding a 90-sample preamble at the head of incoming > sample stream, right after the output of WiFi PHY Hier, as attached > figure, generator.png. So the

Re: [Discuss-gnuradio] Successful transmission in gr-ieee802-11 with adding extra samples (before OFDM preamble)

2014-11-29 Thread Bastian Bloessl
Hi Isen, On 2014-11-29 07:01, Isen I-Chun Chao wrote: Hi, I am using gr-ieee-802-11 and putting a custom block, which is responsible for adding a 90-sample preamble at the head of incoming sample stream, right after the output of WiFi PHY Hier, as attached figure, generator.png. So the sample st