Re: [Discuss-gnuradio] Fwd: Re: FSK now (really) working at 100kbit/sec

[Eric Blossom]

On Mon, Feb 28, 2005 at 02:28:50PM -0500, Bob Vincent wrote:
> 
> >Subject: Re: FSK now (really) working at 100kbit/sec
> >Matt and I spent some time looking at the FSK code over the weekend.
> 
> Thanks. The gr_simple_correlator fix makes it work a lot better.
> 
> CPU problem also seems fixed.

Good.


> HOWEVER, there still seems to be a problem with the USRP decimating filter.
> It is more apparent if the data going in is all zeros or ones, but the same 
> thing happens as before.
> Takes longer for the sidebands to build up, but it's the same problem. I 
> tried cutting back by another factor of 4 with the same result.

OK.  I see what you're talking about.  Running all ones or zeros into
the Tx has the sidebands displayed on the Tx Post Modulation FFT move around
quite a bit over time with occaisional discontinous jumps.  I'll check
it out.

Eric