Re: [Discuss-gnuradio] New version of build-gnuradio

2011-11-25 Thread S Haque
Hi Marcus, is there a handy release note that matches this new version of "build-gnuradio" script? If we had an previous installation on our system (say: Ubuntu 10.04 LTS or 11.xx) are there any prerequisite steps that we have/should to do before adopting this script - or, should we only use the ne

Re: [Discuss-gnuradio] Anyone do you know good GPS receiver Method?

2011-11-25 Thread Nick Foster
On Fri, Nov 25, 2011 at 7:01 AM, Nick Othieno wrote: > Hi Ryan, > > What did you use for your setup, ie daughterboards, antenna and LNA (if you > do not mind my asking). I have been trying a setup for months that uses a > DBSRX2 and a mighty mouse 2 antenna only, but I have never been able to > ac

Re: [Discuss-gnuradio] USRP N210 Benchmarks.

2011-11-25 Thread Nick Foster
On Thu, Nov 24, 2011 at 5:59 AM, Paul M. Bendixen wrote: > Hi again > Thank you very much, we expect our thesis will be available from some time > next year, we will add it to the academic section. > > The work we have done so far have pointed us to the daughterboard mixer. > All mixers have probl

[Discuss-gnuradio] update: gr-basic renamed to gr-blocks

2011-11-25 Thread Josh Blum
For those of you following (or using) work on the gr-basic branch: 1) As Tom requested, the component has been renamed to gr-blocks. I guess the idea is that this will become a dumping ground for new blocks that don't quite fit into the other components. Also, for convenience, the blocks in this

Re: [Discuss-gnuradio] Using PPS to trigger received data storage in Python

2011-11-25 Thread Josh Blum
On 11/25/2011 05:51 PM, Yan Nie wrote: > I really appreciate your reply, Josh. > > I am using a GPS as the input for PPS of my receiver based on USRP > N200 in order to synchronize with a transmitter which uses GPS pulse > to synchronize with other devices. This transmitter detects the NEG > edg

Re: [Discuss-gnuradio] Using PPS to trigger received data storage in Python

2011-11-25 Thread Yan Nie
I really appreciate your reply, Josh. I am using a GPS as the input for PPS of my receiver based on USRP N200 in order to synchronize with a transmitter which uses GPS pulse to synchronize with other devices. This transmitter detects the NEG edge of GPS pulse, then 2ms later, starts to transmit

Re: [Discuss-gnuradio] Anyone do you know good GPS receiver Method?

2011-11-25 Thread Nick Othieno
Hi Ryan, What did you use for your setup, ie daughterboards, antenna and LNA (if you do not mind my asking). I have been trying a setup for months that uses a DBSRX2 and a mighty mouse 2 antenna only, but I have never been able to acquire the L1 signal. I am wondering where I have gone wrong in th

[Discuss-gnuradio] Really big items, best practices?

2011-11-25 Thread Martin Braun
Hi everyone, we've recently been working one some GR projects where item sizes can get really big. One example is cyclostationary spectral estimation code, which will be released soon. If you're not familiar with cyclostationary spectral estimation, here's the problem: the result of the estimator

Re: [Discuss-gnuradio] how to mix two signal

2011-11-25 Thread Marcus M
Frequency is irrelevant. If you want to send two signals on the same medium then you are basically adding them together. On Thu, Nov 24, 2011 at 11:47 PM, Page Jack wrote: > Hi list, > I want to send two signal which at different frequency. Can I simply add > these two signals' sample to generat

[Discuss-gnuradio] PLL error term related and limiting it to {-1, 1}

2011-11-25 Thread Marcus M
Hi, In the PLL/Costas algorithms why is the error term limited between {1,-1}? I understand the need for limiting but how was the value '1' chosen? In the following, float gr_costas_loop_cc::phase_detector_2(gr_complex sample) const { return (sample.real()*sample.imag()); } the phase detector r

[Discuss-gnuradio] Problems in benchmark_xx.py (free(), Segmentation fault, overrun, CRC check, FLL)

2011-11-25 Thread Songsong Gee
I have a number of problems in testing benchmark program under a gr-digital directory from GR 3.5.0rc0 1. Problem about free() side or segmentation fault on tx Whatever I select modulation schemes(-m) or bit rate(-r), carrier frequency(-f) and other options either a free()-related problem or a seg