METHOD OF DETERMINING OPTIMUM SAMPLING TIMES FOR QUADRATURE PHASE SHIFT KEYED OR QUADRATURE AMPLITUDE MODULATED SIGNALS

摘要

A method for determining the optimum sampling times in a quadrature phase shift keyed (QPSK) or quadrature amplitude modulated (QAM) received signal influenced by interference in the radio link between a transmitter and a receiver. The amplitudes of the two quadrature components of the received signal are compared in the receiver and the points in time at which the two amplitudes have the same magnitude are utilized as the sampling times.