[Discuss-gnuradio] TDMA based Multiple Access Channel

2017-06-13 Thread Ammar Mahmood
Hi, I am using an experimental setup using two transmitters and one receiver. I want only one transmitter to transmit at a given time so as to avoid collisions. For this purpose, I want to create a TDMA based multiple access channel. How can I achieve this task? Best, Ammar

Re: [Discuss-gnuradio] Using filesink to store noise samples

2017-04-19 Thread Ammar Mahmood
ndex.php/FAQ#What_is_the_ > file_format_of_a_file_sink.3F_How_can_I_read_files_produced_ > by_a_file_sink.3F > > On 19.04.2017 08:46, Ammar Mahmood wrote: > > Dear all, > > I am trying to save noise samples using file sink to verify that noise > follows Gaussian distribution. I ma

[Discuss-gnuradio] Using filesink to store noise samples

2017-04-19 Thread Ammar Mahmood
Dear all, I am trying to save noise samples using file sink to verify that noise follows Gaussian distribution. I mat file is made by the file sink block. When I read this mat file in mat lab, it only shows the positive samples and does not have negative samples whereas it should have negative

[Discuss-gnuradio] [Import error of underlying library file in Python] [undefined symbol: fftwf_malloc]

2017-04-10 Thread Ammar Mahmood
Dear all, My custom block in GRC was being shown as undocumented. When I loaded its underlying library file in Python, I got the following import error: ImportError: /home/ammar/gr-channelsounder/build/lib/libgnuradio-channelsounder-1.0.0git.so.0.0.0: undefined symbol: fftwf_malloc I installed

[Discuss-gnuradio] Undocumented custom blocks in GNU Radio

2017-03-30 Thread Ammar Mahmood
Dear all, I am trying to run the gr-channelsounder flow graph ( https://github.com/gbaier/gr_channelsounder). The custom blocks in the flowgraph build successfully but are shown as *undocumented in GNU Radio*. Also, the following error occurs if these blocks are used in a simulation: Traceback