Prefilter Bandwidth Effects in Sequential Symbol Synchronizers Based on Pulse Comparation at Half Rate

This work studies the effects of the prefilter bandwidth in the sequential symbol synchronizers based on pulse comparation at half rate. We consider three different prefilter bandwidth namely B1 = ∞, B2 = 2.tx and B3 = 1.tx, where tx is the bit rate. We consider also four synchronizers, where two operate at the rate with versions manual (b-m) and automatic (b-a) and two operate at half rate with versions manual (b-m/2) and automatic (b-a/2). The objective is to study the synchronizers and evaluate the output jitter UIRMS (Unit Interval Root Mean Square) versus the input SNR (Signal Noise Ratio).