A New Approach for Evaluating the Performance of a Symbol Timing Recovery System Employing a General Type of Nonlinearity

摘要

A new technique is presented for evaluating the jitter performance of a Symbol Timing Recovery (STR)subsystem for binary synchronous data transmission systems.The STR system consists of any evensymmetric zero-memory nonlinear device followed by a narrowband filter tuned to the pulse repetition frequency.The exact analytical expressions are derived for the mean and the mean-squared values of the timing wave,based on the high-order moments of the input signal.The rms jitter performance is then computed as a function of various system parameters such as the power series expansion of the zero-memory nonlinear device,prefiltering,and postfiltering.Finally,the numerical results obtained from some specific examples serve to illustrate several aspects of the timing recovery problem.