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.
p1 and p2 correspond to the second flowgraph
Regards
Abhinav Jadon