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Re: [Discuss-gnuradio] Fwd: Re: FSK now (really) working at 100kbit/sec
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Fwd: Re: FSK now (really) working at 100kbit/sec |
Date: |
Mon, 28 Feb 2005 12:17:06 -0800 |
User-agent: |
Mutt/1.5.6i |
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