Strange peaks in OFDM signal

I’m trying to transmit random data using OFDM system but I have strange
problem. Like you can see on the picture I attached, there is quite high
peak in the frequency spectrum (in the red rectangle). I am using OFDM
example from gr-digital with some changes in options, flow graph
screenshots are also attached. Any idea how can I get rid of this peak?

This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs