Groups of synchronizers in digital communications

Abstract

In this paper we deal with three important groups of synchronizers, namely the phase one, the symbol one andthe block one. However here we dedicate our attention to thesymbol synchronizers where we distinguish three big classes: the open loop, the mixed loop and the closed loop ones. The symbol synchronizers have by objective to sample the data in the maximum opening of its eye diagram, to retiming the bits duration with the minimum bit error rate. There are several factors that lead to a non-optimum sampling point, but we detach the static error phase (misadjust) and the random error phase (jitter). The symbol synchronizers still can be analyzed by its lock range and capture range.