Re: [Discuss-gnuradio] Amplitude settings in uhd_siggen

[Ron Economos]

On 02/11/2015 03:05 AM, Martin Braun wrote:
> On 02/11/2015 10:38 AM, zealdeal wrote:
> > Is this clipping behaviour specific to uhd_siggen? Earlier I have tried to
> > increase the amplitude of an OFDM subcarrier to more than 1.0 and saw linear
> > increase in received amplitude. Clipping took place at quite a high
> > amplitude.
> No, 1.0 maps to FS for USRP blocks. In the OFDM example, watch the
> amplitude of the signal before it enters the USRP sink. If it exceeds
> 1.0, I promise it will clip (and you will see this with a spectrum
> analyzer).
>
> M
zealdeal could be talking about the amplitude of an OFDM carrier
before the IFFT.

Ron