APPARATUS AND METHOD FOR PREDICTING BIT ERROR RATE BY DETECTING EDGE OF RECEPTION SIGNAL

摘要

PURPOSE: An apparatus and a method for predicting a bit error rate by detecting an edge of a reception signal are provided to estimate more precisely a BER(Bits Error Rate) of the reception signal and reduce the size of a reception end of a digital wireless communication system. CONSTITUTION: An edge detector(205) receives FMDISC from an FM(Frequency Modulation) discriminator(202), detects an edge and outputs an edge signal representing the detected edge. A clock restoring device(204) restores a clock corresponding to each symbol of the baseband reception signal, delays the restored clock with a predetermined phase and then generates a window signal including windows corresponding to each symbol. A symbol determination unit(206) determines whether each symbol of the baseband reception signal is an error or not by using the window signal and the edge signal and then outputs the result. When clocks as many as the predetermined number are restored and outputted from the clock restoring device(204), a symbol error estimator(207) estimates the BER for estimating the symbol error of the reception signal by using the number of clock and the symbol determination value.