Re: [Discuss-gnuradio] timestamps inband

2009-07-28 Thread Eric Blossom
On Tue, Jul 28, 2009 at 10:25:40AM -0700, George Nychis wrote: > On Mon, Jul 27, 2009 at 7:06 AM, Johnathan Corgan < > jcor...@corganenterprises.com> wrote: > > > On Mon, Jul 27, 2009 at 06:28, Dimitris Symeonidis > > wrote: > > > > > Do we even need timestamps, or are the samples aligned (interle

Re: [Discuss-gnuradio] timestamps inband

2009-07-28 Thread George Nychis
On Mon, Jul 27, 2009 at 7:06 AM, Johnathan Corgan < jcor...@corganenterprises.com> wrote: > On Mon, Jul 27, 2009 at 06:28, Dimitris Symeonidis > wrote: > > > Do we even need timestamps, or are the samples aligned (interleaved) > > anyway, even with the standard FPGA image? We don't care about > >

Re: [Discuss-gnuradio] timestamps inband

2009-07-27 Thread Johnathan Corgan
On Mon, Jul 27, 2009 at 06:28, Dimitris Symeonidis wrote: > Do we even need timestamps, or are the samples aligned (interleaved) > anyway, even with the standard FPGA image? We don't care about > absolute time, just time (phase) difference between the two channels. With the standard image, if you

Re: [Discuss-gnuradio] timestamps inband

2009-07-27 Thread Kyle Pearson
> Do we even need timestamps, or are the samples aligned (interleaved) > anyway, even with the standard FPGA image? We don't care about > absolute time, just time (phase) difference between the two channels. I've done beamforming by modifying the standard build to have all the DDCs running from on

[Discuss-gnuradio] timestamps inband

2009-07-27 Thread Dimitris Symeonidis
Hi list, we're trying to use the inband FPGA image (inband_2rxhb_2tx.rbf) trying to get the samples coming from two channels (for now, maybe more later) on the same rev4 USRP aligned. Our ultimate goal is to do beamforming with the USRP. We have noticed that the distance between the timestamps of