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Re: [Discuss-gnuradio] Decimation rate
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] Decimation rate |
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Date: |
Wed, 3 Sep 2008 20:23:09 -0700 |
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User-agent: |
Mutt/1.5.17 (2007-11-01) |
On Thu, Sep 04, 2008 at 12:56:13AM +0000, WeiXiaowei wrote:
>
> Hi,
>
> In gnuradio 3.1.2, we can actully get 16MHz bandwidth when using
> 8-bit per sample (8 bit for I and Q respectively) and decimation =
> 4, the lowest decimation value defined in the software.
>
> Does anyone know whether it is possible to set demication rate to be
> 2 to double the bandwidth when running usrp_rx_cfile.py to record
> the incoming signal?
No, decimation of 2 does not work with the standard fpga image.
With sufficient effort, it's probably possible to get 4-bit I & Q
working, which could allow 32MHz bandwidth.
Eric