duguzhang
Junior Member level 2
Simple question on FSK
Hi, guys:
I have a question about bandwidth of FSK.
In text book about FM, the bandwidth FM can be calculated by Carson's Rule: BW = 2*(df + fm) where df is the maximum frequency deviation and fm is the maximum bandwidth of modulating analog signal.
But for FSK, some engineers use BW = 2*(df + R/2) where R is the data rate of modulating digital signal and others use BW = 2*(df + R). Which one is more accurate?
Thanks.
Hi, guys:
I have a question about bandwidth of FSK.
In text book about FM, the bandwidth FM can be calculated by Carson's Rule: BW = 2*(df + fm) where df is the maximum frequency deviation and fm is the maximum bandwidth of modulating analog signal.
But for FSK, some engineers use BW = 2*(df + R/2) where R is the data rate of modulating digital signal and others use BW = 2*(df + R). Which one is more accurate?
Thanks.