[Discuss-gnuradio] DAB Single Frequency Network transmission

2012-07-17 Thread Mathias Coinchon
Hello, For your information, here's an application for DAB (Digital Audio Broadcasting) Single Frequency Network transmission using newest USRP with external synchronisation: http://tech.ebu.ch/news/ebu-collaborates-on-successful-dab-sfn-m-17jul12 It's working well in the lab but we have not be

Re : [Discuss-gnuradio] spurious sidelobes with WBX

2010-08-04 Thread Mathias Coinchon
o use 4MHz instead of 3.2MHz. Best regards Mathias De : Charles Brain À : Mathias Coinchon Cc : gnuradio Envoyé le : Mer 4 août 2010, 8h 32min 40s Objet : Re: [Discuss-gnuradio] spurious sidelobes with WBX On 03/08/2010 21:50, Mathias Coinchon wrote: H

[Discuss-gnuradio] pre-correction function

2010-07-18 Thread Mathias Coinchon
Hello, I am interested in implementing pre-correction in gnuradio for linearisation of a power amplifier (class AB, MOSFET). Has anybody experience or clue regarding this subject ? I am looking for a function I could apply on the output signal. We use gnuradio and USRP for OFDM modulation (DAB

[Discuss-gnuradio] RFX400 daughterbo...@200mhz

2009-11-21 Thread Mathias Coinchon
Hi, I am about to modify a RFX400 daughterboard to operate around 200MHz by changing inductors as explained in the wiki. Has anyone tried this successfully before for frequencies below 300MHz ? I am doubtful about the final TX amplifier of the board (RF3315 from RFMD) that specify a minimum fr

[Discuss-gnuradio] Adjacent interference problem with the USRP

2008-01-14 Thread Mathias Coinchon
Hello, I live near a powerful GSM/UMTS base station operating in the 900MHz, 1.8GHz, 2.2 GHz bands and I have noticed that I have got problems receiving signals in these bands with my USRP (using DBSRX daughterboard). I guess the problem comes from the fact that the interfering signal from this

Re: [Discuss-gnuradio] OLPC

2008-01-04 Thread Mathias Coinchon
As in the DRM (digital radio mondiale) specification the signal are generally maximum 20kHz wide but 10kHz is the most commonly used nowadays. So the actual cheap way to receive DRM (Digital Radio Mondiale) transmission is to use the soundcard at A/D with an external tuner. With this it is also