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This work studies the prefilter bandwidth effects on the data phase synchronizers of closed loop.
The prefilter changes its bandwidth, first B1=(infinite), after B2=2.tx and next B3=1.tx, tx is the bit rate. We consider also four data phase synchronizers or data phase lock loop namely the analog (DPLL_ana), hybrid (DPLL_hib), combinational (DPLL_cmb) and sequential (DPLL_seq). The objective is to study the prefilter bandwidth with the four data synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal to Noise Ratio).
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Prefilter Digital Communication Systems