[Discuss-gnuradio] OFDM Constellation Issue

[Abhinav Jadon]

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