[Discuss-gnuradio] Problem running GRC

2011-11-10 Thread sdoering
Hello list, I have already found this topic in an older post, but it ended after two mails. I have installed the latest gnuradio version via git on Ubuntu 11.10. Everything else is just the same like in the older post I just found except the version of GNURadio: [quote] I have the followi

Re: [Discuss-gnuradio] Problem running GRC

2011-11-10 Thread Josh Blum
On 11/10/2011 03:55 AM, sdoer...@rhrk.uni-kl.de wrote: > Hello list, > > I have already found this topic in an older post, but it ended after two > mails. > I have installed the latest gnuradio version via git on Ubuntu 11.10. > > Everything else is just the same like in the older post I just

[Discuss-gnuradio] hestimate matrix in Alamouti OFDM communication

2011-11-10 Thread Vanessa Gardellin
I noticed that the hestimate matrix in the 2x1 ofdm alamouti communication has crazy values like: sym: -0.0020 + j-0.0018 ks: -1. + j+0. eq: +282.3798 + j-254.7796 ==> -1. + j+0. sym: +0.0017 + j+0.0022 ks: +0. + j+0. eq: +811.7408 + j-449.4426 ==> +2.3752 + j+1.047

Re: [Discuss-gnuradio] About the example_timing.py in the example

2011-11-10 Thread Tom Rondeau
On Thu, Nov 10, 2011 at 1:34 AM, Wang Ning wrote: > Hi, all, > > I am not sure if the timing example in > > gr-digital/examples/example_timing.py > > has some issues when using M&M timing recovery. In this example, if > setting --mode=1 > we will run into > >self.connect(self.src, self.rr

Re: [Discuss-gnuradio] performance improvements and using volk

2011-11-10 Thread Tom Rondeau
On Wed, Nov 9, 2011 at 5:25 PM, Josh Blum wrote: > I just added a gr_basic_add_const and gr_basic_multiply_const. Nick > added the volk (and orc) implementations for the float32 and complex > float32 implementations of the multiplier. > > > > > So I like everything about this but the name. We co

Re: [Discuss-gnuradio] Connecting a receiver to the DBSRX

2011-11-10 Thread Patrik Tast
I added 3 x 20 dB attenuators before entering DBSRX. It works as I imagined and I didn't fry the daughtercard. I could verify that I master the si2109 demodulator. Some images of the test setup @ http://www.poes-weather.com/~patrik/usrp/dvb-dbsrx/ Thanks to all for the help, Patrik - Orig

[Discuss-gnuradio] More experiments with 8-bit options on USRP2

2011-11-10 Thread Marcus D. Leech
Put together a test flow-graph today that is just a UHD-source and an 1024-bin FFT sink at 10frames/sec. I configured the source for 50Msps, with 8-bit samples. My AMD Phenom II X6 1090T was able to keep up, but if I inserted even a single multiplier block between the source, and the FFT, I

[Discuss-gnuradio] Junaid left a message for you...

2011-11-10 Thread Badoo
Junaid left a message for you... Its sender and content will be shown only to you and you can delete it at any time. You can instantly reply to it, using the message exchange system. To find out what's in the message, just follow this link: http://eu1.badoo.com/junaid124/in/Pv3HVEZFFgI/?lang_id=

[Discuss-gnuradio] Apply Trellis in benchmark_tx and rx

2011-11-10 Thread Shen Wenbo
Hi, I applied trellis in benchmark_tx2 and rx2 using dbpsk2. I have modified the dbpsk2.py file according to the test_tcm_bit.py. On the TX side, I add: # turn bytes into k-bit vectors self.bytes2chunks = \ gr.packed_to_unpacked_bb(self.bits_per_symbol(), gr.GR_MSB_FI

Re: [Discuss-gnuradio] [USRP-users] UHD Announcement - November 07th 2011

2011-11-10 Thread Gaetano Mendola
On Tue, Nov 8, 2011 at 5:11 AM, Josh Blum wrote: > Hello list, > > A bunch of great work has been merged into the master. > > --- > -- Hooks for IQ balance and DC offset correction > ---

[Discuss-gnuradio] How to write vector to a file

2011-11-10 Thread hasanimam
Hello everyone, I am here to ask a question. As I am very new with gnuradio, I would really be happy if someone get me a solution. I want to write vectors, which comes from stream, to a file. Here is what I wanna do. self.connect(self.u, s2v, "class") s2v transforms the stream to vector. I wa