[Discuss-gnuradio] Message passing between gnuradio block and python class
Hi. I am trying to make message source block in python. This block will send value of some variable by message to python class. I want to send message from this block to python class. Is it possible to send message in this manner? If yes, then how? Thanks Mitul Vekariya ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Smith Chart in GNU Radio
Hi I am trying to figure out how to use smith chart as a sink in GNU Radio. I made an OOT (https://github.com/mitul93/gr-smithchart) using pyQT by following Tim O'shea's work. It is merely a skeleton, still lots of work to do. I made two versions of smith chart - one using pyQT and another using matplotlib (ploar plot). After executing example_smithsink_numpy.py when I close the graph, the program won't stop. I tried to write an close_event() for the graph, but it didn't work. Is it happening due to the fact I am using it with GNU Radio? To display data point on graph, shall I use message passing or simple vector input? Also please give me your feedback about expected function that I must implement in smith chart. Thanks Mitul Vekariya Institute of Technology Nirma University ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Smith Chart in GNU Radio
Hello Problem solved. I removed the QApplication() from the example. Matplotlib was used for plotting, no need of qApp!! Thanks Mitul Vekariya On Tue, Apr 8, 2014 at 2:22 PM, MITUL VEKARIYA 10bec...@nirmauni.ac.inwrote: Hi I am trying to figure out how to use smith chart as a sink in GNU Radio. I made an OOT (https://github.com/mitul93/gr-smithchart) using pyQT by following Tim O'shea's work. It is merely a skeleton, still lots of work to do. I made two versions of smith chart - one using pyQT and another using matplotlib (ploar plot). After executing example_smithsink_numpy.py when I close the graph, the program won't stop. I tried to write an close_event() for the graph, but it didn't work. Is it happening due to the fact I am using it with GNU Radio? To display data point on graph, shall I use message passing or simple vector input? Also please give me your feedback about expected function that I must implement in smith chart. Thanks Mitul Vekariya Institute of Technology Nirma University ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] GSOC 14 proposal for project Vector Network Analyzer
Hi Here's the link for my proposal for the project Vector Network Analyzer https://docs.google.com/file/d/0B5wp9A_w2B5scmVKOTlGbVFISm8/edit?pli=1 You can post comment on google doc also. I am all ears to any suggestion. Thanks Mitul Vekariya Institute of Technology Nirma University Ahmedabad 382350 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] change center freq of usrp_source block automatically in incremental way
Hi I want to make block diagram in grc such that the center freq of usrp_source should be automatically changed in incremental way defined by min and max boundary. I don't want to take input from qt-qui slider. Just like the example of usrp_spectum_sense.py but in grc. How can I do that? Thanks Mitul Vekariya ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] GSOC 14 project Vector Network Analyzer
Hi, Thanks for reply. I want to measure phase between reference signal and signal coming from DUT(Device Under Test). It may possible that due to non-linear characteristic of the device, there are changes in frequency and amplitude of signal. In this case the method you mentioned will give correct phase? Thanks Mitul Vekariya On Wed, Mar 5, 2014 at 7:46 AM, zhenhua han hzhua...@gmail.com wrote: Hi, How can we measure phase between two sine waves using FPGA? Supposing the two sine waves have the same frequency. For two discrete complex signals, v1 and v2. we can compute the phase difference as follow. v3 = v1 * conj(v2) phase diff = arctan(imag(v3) , real(v3)) (conj() means conjugate) Best, Zhenhua 2014-03-05 1:36 GMT+08:00 MITUL VEKARIYA 10bec...@nirmauni.ac.in: Hi I am Mitul Vekariya https://github.com/mitul93 - final year student of Electronics and Communication (ECE) branch at Nirma University, India. I am very interested in mentioned projecthttp://gnuradio.org/redmine/projects/gnuradio/wiki/GSoC . I like digital signal processing, Embedded Linux, Digital Communication and RF designing. I didn't work on any USRP devices, but I have experience of FPGA programming using VHDL and LabVIEW. I am familiar with SDR fundamentals and GNURadio. -- Regarding Project, I've found one good document http://www2.ee.cityu.edu.hk/~sklmmw/apmtt/B2BJan14/day1/Agilent_VNA_AN_Basics_5965-7917E.PDFfrom agilent. Summary of what I understood from that document: 1) Using usrp b210 I can generate pure tone sine wave as test signal 2) I will connect DUT ( device under test ) with external components to the usrp and measure transmitted and reflected signal 3) The amplitude and phase of the received signal will lead to different parameters How can we measure phase between two sine waves using FPGA? The method of zero crossing is advised or not? Please give you inputs on this project. Thanks Mitul Vekariya Institute of Technology Nirma University India ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] GSOC 14 project Vector Network Analyzer
Hi I am Mitul Vekariya https://github.com/mitul93 - final year student of Electronics and Communication (ECE) branch at Nirma University, India. I am very interested in mentioned projecthttp://gnuradio.org/redmine/projects/gnuradio/wiki/GSoC . I like digital signal processing, Embedded Linux, Digital Communication and RF designing. I didn't work on any USRP devices, but I have experience of FPGA programming using VHDL and LabVIEW. I am familiar with SDR fundamentals and GNURadio. -- Regarding Project, I've found one good document http://www2.ee.cityu.edu.hk/~sklmmw/apmtt/B2BJan14/day1/Agilent_VNA_AN_Basics_5965-7917E.PDFfrom agilent. Summary of what I understood from that document: 1) Using usrp b210 I can generate pure tone sine wave as test signal 2) I will connect DUT ( device under test ) with external components to the usrp and measure transmitted and reflected signal 3) The amplitude and phase of the received signal will lead to different parameters How can we measure phase between two sine waves using FPGA? The method of zero crossing is advised or not? Please give you inputs on this project. Thanks Mitul Vekariya Institute of Technology Nirma University India ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
