Re: [Discuss-gnuradio] OFDM Constellation Issue

[Martin Braun]

You have windows enabled in the FFTs. Switch to rectangular windows for
OFDM (you can check out the OFDM examples).

M

On 04/16/2016 02:53 PM, Abhinav Jadon wrote:
> Hi,
> I made two flowgraphs.
> 1st flowgraph : Source -> BPSK modulation -> Constellation Sink
> 2nd flowgraph : Source -> BPSK modulation -> IFFT -> FFT ->
> Constellation Sink
> 
> The source is configured such that if only transmits 1s.
> Therefore one would expect the constellation plot to have one dot on the
> x-axis around the point (1,0). This is what happens :)
> But in the second flowgraph one would expect the same result but the
> flowgraph is not what it should look like.
> 
> The link for the screenshots :
> https://drive.google.com/folderview?id=0Bwh_xvBu7PpWaTRZX0VqQzBxNU0&usp=sharing
> p1 and p2 correspond to the second flowgraph
> Regards
> Abhinav Jadon
> 
> 
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