Re: [Discuss-gnuradio] correlation estimator reliability problem

2019-01-31 Thread Cinaed Simson
On 1/31/19 6:39 AM, Alban Meffre wrote: > Hi All > did someone make the test_corr_est.grc example work properly recently ? > i tried the 3.7.13 gnuradio version on linux, macos and windows > in all versions the output of the correlation estimator block is really > a mess > this block put tag even

Re: [Discuss-gnuradio] Moving my antenna

2019-01-31 Thread Gerry Creager - NOAA Affiliate
In general, good quality 75 ohm (CATV) coax is perfectly acceptable for receive applications, and for that matter, most transmit applications. There's a fair bit of misconception about the amount of "loss" introduced by an impedence mismatch. If you mentioned the frequency range you're interested

Re: [Discuss-gnuradio] PC requirements for DVB-S2 processing at a high bandwidth

2019-01-31 Thread Brennan Ashton
In addition to what Ron mentioned there is an FPGA implementation of the LDPC portion of DVB-S2 that I will be releasing late February (I hoped to be ready to relase it by FOSDEM, but work got in the way) which achieves the full bitrate. The initial release will not be integrated with RFNoC, but

Re: [Discuss-gnuradio] AM modulated signal using USRP2

2019-01-31 Thread Ron Economos
Here's a flow graph. It's set up for an Ettus B2x0, so you'll have to change the UHD sink parameters. Ron On 1/31/19 12:01, Afaq Ahmed wrote: Hello fellows, I want to create an AM Modulator using USRP2. The setup is such that I want to use one USRP2 as AM Modulator (Transmitter) and another

[Discuss-gnuradio] AM modulated signal using USRP2

2019-01-31 Thread Afaq Ahmed
Hello fellows, I want to create an AM Modulator using USRP2. The setup is such that I want to use one USRP2 as AM Modulator (Transmitter) and another USRP2 to be the AM Demodulator (Receiver). Can you please point in the right direction ? May be some suggestions on how I can achieve this would be

Re: [Discuss-gnuradio] PC requirements for DVB-S2 processing at a high bandwidth

2019-01-31 Thread Ron Economos
The processing requirement for DVB-S2 are significant, especially the receiver. Since you're using an X-series USRP, I'll guess you're interested in satellite downlinks which can be 30 to 50 Msyms/s. Basically, the requirement would be the most powerful system you can afford. Something with

[Discuss-gnuradio] PC requirements for DVB-S2 processing at a high bandwidth

2019-01-31 Thread Maria Jesus CaƱavate Sanchez
Hi there! My name is Maria and I would like to make a question regarding the kind of PC characteristics which would be required to be able to process the signal in real-time (on the PC) when using the maximum bandwidth available on the USRP X-series. The scenario would be the following one:

[Discuss-gnuradio] OFDM TX original example - output broken

2019-01-31 Thread Sebastian Peters
Hey All! I'm fighting a problem with the original GNU Radio OFDM TX example from https://github.com/gnuradio/gnuradio/blob/master/gr-digital/examples/ofdm/tx_ofdm.grc Nothing is changed, except adding two File Sinks writing the data to two text files. One File Sink is added at the random

[Discuss-gnuradio] Does anyone use the Sphinx (Python) Manual?

2019-01-31 Thread Marc Lichtman
Hey All, We are attempting to migrate the useful Sphinx documentation into Doxygen so there is less redundant documentation, and one less thing to deal with in 3.8. If you are someone who uses or has used the Sphinx manual, we would appreciate feedback about what parts of it you use.

[Discuss-gnuradio] correlation estimator reliability problem

2019-01-31 Thread Alban Meffre
Hi All did someone make the test_corr_est.grc example work properly recently ? i tried the 3.7.13 gnuradio version on linux, macos and windows in all versions the output of the correlation estimator block is really a mess this block put tag even if there is no signal at all, with corr_est = 0

Re: [Discuss-gnuradio] Custom Block ID as variable

2019-01-31 Thread Erik von Keyserlingk
Thanks for both your answers! The solution proposed by Marcus where a block drops samples until it receive a message is definitely worth a try and I think that will solve my problem also in an easier way. I think that Glens event detection block will come in handy sometime in the future! Cheers