Re: [Discuss-gnuradio] CIC stop band

2007-05-16 Thread Eric Blossom
On Wed, May 16, 2007 at 04:00:24PM -0700, Hans Glitsch wrote: > Hello, > > What is the stop band of the FPGA CIC filter? How do I figure out the > attenuation at a given frequency outside my bandwidth? > > I'm decimating by 250. > > Thanks, > Hans It's a fourth order CIC. See http://users.sni

[Discuss-gnuradio] CIC stop band

2007-05-16 Thread Hans Glitsch
Hello, What is the stop band of the FPGA CIC filter? How do I figure out the attenuation at a given frequency outside my bandwidth? I'm decimating by 250. Thanks, Hans - Original Message - From: "Vincenzo Pellegrini" <[EMAIL PROTECTED]> To: "gnuradio mailing list" Sent: Wednesda

[Discuss-gnuradio] wise big block interleaving in GNURadio

2007-05-16 Thread Vincenzo Pellegrini
Hi everybody, I need to do interleaving on very big blocks of data, I have tried to demultiplex my stream into several (6048) output streams in order to be able to act on it and then re-multiplex it to something serial. unfortunately this seems to be too much, could anybody tell me what is the wis

Re: [Discuss-gnuradio] Bluetooth using RFX-2400

2007-05-16 Thread Dan Halperin
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Johnathan Corgan wrote: > Dominic Spill wrote: > >> I think I may've mis-phrased the question, if I have a single daughterboard >> and I tune to 2.44GHz, what are the highest and lowest frequencies that I >> should be able to see when I run somethin

Re: [Discuss-gnuradio] Bluetooth using RFX-2400

2007-05-16 Thread Johnathan Corgan
Dominic Spill wrote: > I think I may've mis-phrased the question, if I have a single daughterboard > and I tune to 2.44GHz, what are the highest and lowest frequencies that I > should be able to see when I run something like the usrp_fft waterfall > program? With a decimation of 8, you will se

Re: [Discuss-gnuradio] Bluetooth using RFX-2400

2007-05-16 Thread Dominic Spill
I think I may've mis-phrased the question, if I have a single daughterboard and I tune to 2.44GHz, what are the highest and lowest frequencies that I should be able to see when I run something like the usrp_fft waterfall program? --Dominic On Wednesday 16 May 2007 19:10:15 Tarun Tiwari wrote:

Re: [Discuss-gnuradio] Bluetooth using RFX-2400

2007-05-16 Thread Tarun Tiwari
Hi Dominic, RFX2400 works in the range of 2.3GHz - 2.9GHz (both TX/RX) and you may check out http://gnuradio.utah.edu/trac/wiki/UsrpRfxDiagrams for connection diagrams. There is a bandpass filter on board which restrict you to ISM band (2.4 - 2.4835 GHz) , but it can be bypassed if you need. Her

[Discuss-gnuradio] Bluetooth using RFX-2400

2007-05-16 Thread Dominic Spill
Hi, I know Bluetooth has been mentioned on the mailing list a few time, and the response was a bit varied, but I thought I'd mention that I've been working on it for this for the past few weeks. I'm using the USRP to sniff packets on a single frequency, and it seems to work well, but the obvio