Re: [Discuss-gnuradio] Good sugestions - gr_fast_atan2() and gr_fast_nco()

> I would like to know if someone has developed a nco that use table technique > to calculate the sin and -cos? It would be nice to make an gr_fast_nco that > find the values of sin and cos in a table instead of calculate them at each > nco step. The traditional way to calculate sin and cos

Re: [Discuss-gnuradio] Good sugestions - gr_fast_atan2() and gr_fast_nco()

On Thu, Jul 07, 2005 at 02:11:28PM -0300, Jose Marcelo Lima Duarte wrote: > I'm trying to build a costas loop to demodulate a BPSK signal from a > non-geostationary satellite. I need to make it work at real > time; since our computer can't store all the data during the transmission > period. The

Re: [Discuss-gnuradio] AUX_ADC Inputs and mux register docs

On Thu, Jul 07, 2005 at 07:14:31AM -0700, Heiko Jones wrote: > How do I set the mux register to look at the AUX_ADC inputs? I am > assuming it is the mux register I set, but, I searched and could find no > documentation on what the bits of the mux register do. You don't use the mux register to rea

[Discuss-gnuradio] Good sugestions - gr_fast_atan2() and gr_fast_nco()

I'm trying to build a costas loop to demodulate a BPSK signal from a non-geostationary satellite. I need to make it work at real time; since our computer can't store all the data during the transmission period. The base band signal has a frequency of 70 kHz. In order to make a fast costas loop,

Re: [Discuss-gnuradio] USRP sample timing

I guess that 1cm would be a problem if you were sampling 10Ghz directly :-) :-) Speaking of interferometry (:-) :-), how did your demo go at GB, Matt?   Are you in a position to give us a summary here, or should we wait for   the SARA CD/DVD proceedings to come out? Matt Ettus wrote: Dav

[Discuss-gnuradio] AUX_ADC Inputs and mux register docs

How do I set the mux register to look at the AUX_ADC inputs? I am assuming it is the mux register I set, but, I searched and could find no documentation on what the bits of the mux register do. Do we have something like that?? I have a 1K/sec signal I need to look at. has anybody else used these i

Re: Re: [Discuss-gnuradio] 3G on USRP

Dear Chris,  Thanks for the detailed information.  I will definitely look into the timing constraints and evaluate.  I am going through the USRP user manual in detail and looking into how I can fit custom-logic onto the board if required, so that our timing constraints are met.  Thanks, a