Re: [Discuss-gnuradio] gr-lte errors

2014-06-30 Thread Marcus Müller
Hi! The errors look like python can't find the LTE module; have you made sure you've installed that? With best regards, Marcus Müller On 30.06.2014 21:11, Gabriel Tolón wrote: > Hi, > > I downloaded the GNU RADIO LTE receiver code and followed the > instructions to install it, but unfortunately I

Re: [Discuss-gnuradio] [USRP-users] changing variable value during runtime

2014-06-30 Thread Marcus Müller
Hi Berkyuim, I think you mixed up the GNU Radio discuss and the usrp-users mailing list; I've included the GNU Radio list in my reply, so follow up to that[1] There is something called function probes in GNU Radio, and it kind of does what you want, if you want to periodically poll the value of so

Re: [Discuss-gnuradio] Live DVD & X310

2014-06-30 Thread Ben Hilburn
David - Be sure to wait until the burner utility TELLS YOU IT IS COMPLETE. If you power-cycle in the middle of the burn, it's a great way to brick your device. If you have bricked your X300, you can recover it using the JTAG port on the front panel. Cheers, Ben On Sun, Jun 29, 2014 at 7:45 AM,

[Discuss-gnuradio] gr-lte errors

2014-06-30 Thread Gabriel Tolón
Hi, I downloaded the GNU RADIO LTE receiver code and followed the instructions to install it, but unfortunately I couldn't make it work. In these four example files I get the following errors: http://pastie.org/9341276 I've also tried with the python script hier_block_install_helper.py, w

Re: [Discuss-gnuradio] Arbitrary ADC resolution at the receiver

2014-06-30 Thread Marcus Müller
Just out of curiosity: Why would you want to reduce the ADC resolution? Most of the effects introduced can be simulated in GNU Radio, e.g. by converting a float stream to integer and dividing it by a constant power of two. Greetings, Marcus On 30.06.2014 16:59, Leonardo S. Cardoso wrote: > Yes, 14

Re: [Discuss-gnuradio] Arbitrary ADC resolution at the receiver

2014-06-30 Thread Leonardo S. Cardoso
Yes, 14 bits... mistyped the ADC resolution... Thanks, Matt. I'll investigate this idea... Leonardo S. Cardoso leo...@gmail.com On Mon, Jun 30, 2014 at 4:46 PM, Matt Ettus wrote: > The n200 and n210 have 14 bit ADCs. > > In any case, you can fake fewer bits by zeroing the low order bits in th

[Discuss-gnuradio] unsubscribe

2014-06-30 Thread Kanbier, J.W.
___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Arbitrary ADC resolution at the receiver

2014-06-30 Thread Matt Ettus
The n200 and n210 have 14 bit ADCs. In any case, you can fake fewer bits by zeroing the low order bits in the fpga. Matt On Jun 30, 2014 10:38 AM, "Leonardo S. Cardoso" wrote: > Hello everyone, > > I excuse myself on advance by my noob question... > > I have an N210 with an SBX front end, and I

Re: [Discuss-gnuradio] OFDM receiver error, FATAL: Missing a required length tag on port 0 at item #0

2014-06-30 Thread Martin Braun
On 06/30/2014 03:20 PM, Wafa Elhajhmida wrote: > FATAL: Missing a required length tag on port 0 at item #0 > thread[thread-per-block[21]: ]: Missing length tag. Add a stream to tagged stream converter. M ___ Discuss-gnuradio mailing list Discuss-gnu

Re: [Discuss-gnuradio] Arbitrary ADC resolution at the receiver

2014-06-30 Thread Marcus Leech
I suppose you'd have to modify the FPGA-to-ADC interface to bring in fewer bits from the ADC.  I don't think there's a way to lower ADC resolution at the ADC itself.     on Jun 30, 2014, Leonardo S. Cardoso wrote: Hello everyone,   I excuse myself on advance by my noob question...   I have an N

[Discuss-gnuradio] Arbitrary ADC resolution at the receiver

2014-06-30 Thread Leonardo S. Cardoso
Hello everyone, I excuse myself on advance by my noob question... I have an N210 with an SBX front end, and I want to experiment with decoding signals at a lower resolution, rather than the default 12 bits provided by the N210 ADCs. Does anyone know if (and how) can I limit the resolution of the

Re: [Discuss-gnuradio] OFDM receiver error, FATAL: Missing a required length tag on port 0 at item #0

2014-06-30 Thread Philip Balister
On 06/30/2014 09:20 AM, Wafa Elhajhmida wrote: > Hi, > > I implemented OFDM receiver on USRP E110 using the OFDM receiver in > examples in gnuradio's files 3.7 > > and I added to it a chain to create OFDM transmitter: random source, OFDM > transmitter, channel model, throttle, USRP sink > > But

[Discuss-gnuradio] OFDM receiver error, FATAL: Missing a required length tag on port 0 at item #0

2014-06-30 Thread Wafa Elhajhmida
Hi, I implemented OFDM receiver on USRP E110 using the OFDM receiver in examples in gnuradio's files 3.7 and I added to it a chain to create OFDM transmitter: random source, OFDM transmitter, channel model, throttle, USRP sink But when I executed the flow graph. It generated "UO

Re: [Discuss-gnuradio] len_tag_key

2014-06-30 Thread Martin Braun
On 06/29/2014 10:49 AM, GP 2014 wrote: > Dear all , > I use a flowgraph containing : File source , OFDM TX ,throttle, File > sink (I will replace then the file sink by UHD sink to try with USRP) > I got this error message > > FATAL: Missing a required length tag on port 0 at item #0 > thread[threa