Re: [Discuss-gnuradio] Flowgraph with loops

On 05/16/2017 04:01 PM, Thom L wrote: Hi, For educational purposes I try to use gnuradio to realize simple digital filters with delay, add and multiply blocks. This is perfect for non-recursive filters but it does not seem possible to make loops as in the example above and thus impossible to b

[Discuss-gnuradio] Flowgraph with loops

Hi, For educational purposes I try to use gnuradio to realize simple digital filters with delay, add and multiply blocks. This is perfect for non-recursive filters but it does not seem possible to make loops as in the example above and thus impossible to build a recursive filter on the same princip

Re: [Discuss-gnuradio] The low performance of gr-ieee-802.11 running on b210 ????

Hi Cristian, Thanks for the information you share. It's really new to me to find out it can be solved this way. However, it could affect the performance, which I think you have already noticed. I don't know why I haven't meet this problem before. Here is my computers' info. I have two computers w

Re: [Discuss-gnuradio] Tagged Stream Blocks with HackRF

On Tuesday, May 16 2017, Sylvain Munaut wrote: > The hackrf driver has no support for burst transmissions. thanks! Do you know if there is someone working on it? Is there some way to work around this restrictions? Which other SDR support this feature? BladeRF maybe? Cheers -- Dr. Florian Adamsk

Re: [Discuss-gnuradio] The low performance of gr-ieee-802.11 running on b210 ????

2017-05-16 10:51 GMT-05:00 zhan siyu : > Hi Cristian, > > Thanks for your email. As to my experience, at first you need to make sure > the two computers can receive each other's packet sent by usrp. Then you 'd > better use wireshark to capture the packets and analyze. I didn't do any > modificati

Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 175, Issue 16

Hi , i am using 16 qam mdulation transmission and reception on gnuradio , I have to do synchronization at reciever side ,I am using correlate and sync block i get the peak but i want to know how to remove preamble from my frame after this block , so please help in this regard On May 15, 2017 9:03

Re: [Discuss-gnuradio] The low performance of gr-ieee-802.11 running on b210 ????

Hi Cristian, Thanks for your email. As to my experience, at first you need to make sure the two computers can receive each other's packet sent by usrp. Then you 'd better use wireshark to capture the packets and analyze. I didn't do any modifications on the grc file. Actually, I am learning the co

Re: [Discuss-gnuradio] gr_ieee-80211 receiver

Hi. Did you check the name of the wireshark file is the same in the flowgraph and in the temp file (if you are using the .sh file into the app folder)? Best regards, Cristian 2017-05-09 4:26 GMT-05:00 Bastian Bloessl : > > > On 9. May 2017, at 08:26, LiLi wrote: > > > > If we want to capture

Re: [Discuss-gnuradio] The low performance of gr-ieee-802.11 running on b210 ????

Hi all. I was reading about your implementation Siyu and i am trying to do the same (ieee802.11 over USRP B210 - intel i7) but i haven't been able to. Could you indicate me what you did. It would help me a lot. I had overruns and i solved it by changing the transport parameters. I have the transc

Re: [Discuss-gnuradio] Tagged Stream Blocks with HackRF

The hackrf driver has no support for burst transmissions. Cheers, Sylvain ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Tagged Stream Blocks with HackRF

Dear all, I have problems to get the example "wifi_tx.grc" from gr-ieee802-11 [1] to work with my HackRF device. In the example, I just replaced the USRP sink with the osmocom sink and tried to run it. I always get underrun errors: , | Executing: /usr/bin/python2 -u /home/cit/Dojo/sdr/wifi_tx

Re: [Discuss-gnuradio] Saving float values in a file

First of all it is saved as binary data. If you can interpret this data as float, depends on the editor/viewer you use. I am sure you find some hex editors (e.g. Free Hex Editor Neo) which are capable of a float interpretation.

Re: [Discuss-gnuradio] Saving float values in a file

Can I then display the data in float format from the file? On Tue, May 16, 2017 at 6:51 PM, Moritz Luca Schmid < luca.moritz.sch...@gmail.com> wrote: > Hi Ayan, > > you can use the gr block "file sink". It writes your stream (you can > select float as data type) to a binary file. > > Just connec

Re: [Discuss-gnuradio] Saving float values in a file

Hi Ayan, you can use the gr block "file sink". It writes your stream (you can select float as data type) to a binary file. Just connect the file sink block to the gnuradio block, you want to record the data from. Best Luca On 16.05.2017 15:17, Ayan Chatterjee wrote: Hi, How can float

[Discuss-gnuradio] Saving float values in a file

Hi, How can float values be saved in a file from some gnu radio block? Thanks. Regards, Ayan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Detecting two transmitters

Dear Ayan, by observing the received signal, and using your signal processing and communication technology to detect exactly the kind of signal the USRP is sending? Note that the USRPs are Software Defined Radio frontends; what is sent is defined by the software driving the transmitting USRP, and

[Discuss-gnuradio] Detecting two transmitters

Hi, Using an USRP as receiver, how do I detect whether one USRP is sending as a transmitter or two are sending? Thanks. Regards, Ayan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Kernel Ubuntu - USB 3.0 trouble - missed packets

Also the connector. I have nottice bad performance qhen using usb 3.0 front case connectors. regards On 16/05/17 06:49, Neel Pandeya wrote: > Hello Cristian: > > If you use Ubuntu 16.04.2, the kernel is 4.8, which should be fine. > > The specific USB controller is also very important. The Int