# CFO estimation and compensation

I am reading about CFO estimation in OFDM system, assume for example that we estimate it based on CP as mentioned HERE and the estimated CFO for the received signal $$r(t)$$ is $$β$$. My question, how now can we compensate that CFO on the time-domain signal $$r(t)$$ ?

As with any signal: multiply with an appropriate $$e^{-j2\pi \beta n}$$.