I am reviewing some bandlimited communications theory and something is bothering me -
My book says increasing the roll-off factor makes the received sequence more tolerant to timing recovery errors but it's very clear that the strongest peaks are not at the sampling instances. Thus it doesn't seem that the system is very tolerant to timing errors regardless of the roll-off factor.
It looks like to make the peaks equate to the sampling times you would need to half the transmission rate.
Am I wrong? What's going on?