[Discuss-gnuradio] Pybomb installation error

2016-04-20 Thread Shahnaz Shirazi
Hi All, I'm trying to install Gnu radio through Pybombs. I followed the steps from instruction as listed below without error until step 4. Quickstart For the impatient: 1. Install PyBOMBS as per the previous section 2. Add a list of recipes, e.g. by running $ pybombs recipes add gr

Re: [Discuss-gnuradio] Feedback with Transmitters and Receiver

2016-04-20 Thread Derek Kozel
Hello Pavan, Are you trying to create a shared timebase between the two USRPs without having a shared 1PPS or GPS reference? You are still not using enough detail for us to understand fully. In Figure 5 both USRPs are connected with a MIMO cable and so have both shared frequency and time bases. W

Re: [Discuss-gnuradio] Feedback with Transmitters and Receiver

2016-04-20 Thread Pavan Yedavalli
Hi Martin, I guess I have a few questions: 1.) Are there any examples in the gnuradio codebase/flowgraph repository that show how to do synchronized feedback between two USRPs? In other words, I send a signal from a transmit USRP, and then I receive that signal at the receive USRP, and then I sen

Re: [Discuss-gnuradio] Multiple Inputs in Tagged Stream Block

2016-04-20 Thread Martin Braun
The tagged_stream_mux is an example of this kind of block. As Andrej points out, you need to make sure every input signal is actually a tagged stream. Cheers, M On 04/20/2016 03:12 PM, Andrej Rode wrote: > Hello Jenny, > > I can try to help you, but I'm not quite sure if I am right. If I am wro

Re: [Discuss-gnuradio] Synced MIMO cable clock of both boards changes at every call to tb.start()?

2016-04-20 Thread Pavan Yedavalli
Hi Martin, Okay, thank you - so there does appear to be some variation coming from somewhere that I guess is not due to clock changes. My test was the following: 1.) Transmit with a single antenna and receive using uhd_fft. The received peak tone is very stable in magnitude (.01 dB or even less)

Re: [Discuss-gnuradio] Multiple Inputs in Tagged Stream Block

2016-04-20 Thread Andrej Rode
Hello Jenny, I can try to help you, but I'm not quite sure if I am right. If I am wrong I will be corrected soon. > >> Generating: "/home/jenny/Tutorials/rx_ofdm.py" > >> Executing: "/home/jenny/Tutorials/rx_ofdm.py" > >> Using Volk machine: sse4_2_64_orc > >> gr::log :FATAL: geese_vcvc0 - Mis

[Discuss-gnuradio] Multiple Inputs in Tagged Stream Block

2016-04-20 Thread Jingyi Sun
Hello everyone, I am trying to create an out-of-tree tagged stream block with multiple (3) input ports. Am I coding the private constructor incorrectly, or is there something else? Here's my process: First, I got the block to work with just one input port. Then, I added additional inputs by c