METHOD AND APPARATUS FOR FINDING SER PERFORMANCE OF QPSK TRANSMITTED SIGNAL FOR POWER-LINE CHANNEL WITH NAKAGAMI BACKGROUND NOISE

摘要

PURPOSE: A method and an apparatus for obtaining a SER[Symbol Error Rate]performance in a power line channel of a QPSK[Quadrature Phase Shift Keying]transmission mode which has a Nakagami noise are provided to easily estimate a performance value. CONSTITUTION: A transmitter transmits modulated data like a binary data set in a QPSK mode. A receiver demodulates data of each channel through two BPSK[Binary Phase Shift Keying]demodulation units about data which is received from an I[Inphase]channel and a Q[Quadrature]channel. The data includes a background noise of a Nakagami-m distribution in a way which is similar with modeling a fading channel of a wireless communication. A BPSK demodulation unit determines reception data by using a comparator which compares received digital data with a threshold value 0.