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Re: [Discuss-gnuradio] USRP MIMO node bandwidth
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] USRP MIMO node bandwidth |
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Date: |
Tue, 19 Jan 2010 11:58:18 -0800 |
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User-agent: |
Mutt/1.5.20 (2009-08-17) |
On Tue, Jan 19, 2010 at 11:19:04AM +0100, Óscar González Fernández wrote:
> The effect we observe doesn't seem to be a non linear effect due to high
> signal amplitude. Lowering the amplitude doesn't solve the problem. For
> example, when we transmit a 1 MHz tone we can see that a spurious tone
> appears at -3 MHz (referred to the carrier frequency) when using an
> interpolation rate of 16 (4x at the AD9862 and 4x at the FPGA). So, that
> spurious seems to be aliasing. Can you corroborate this?
>
> Óscar
Sorry, as Matt pointed out to me off-line, I wasn't answering the
question that you asked.
Eric