INTERFERENCE DETECTION CIRCUIT

摘要

PURPOSE:To obtain an interference detection circuit which is short in interference detection time and high in detection precision and can discriminate phasing from interference. CONSTITUTION:A dummy error decision part 1 monitors whether or not the amplitude of a detection output signal So is in a dummy error area in units of one data symbol. A dummy error pulse measurement part 4 counts the number Np of dummy error pulses in every certain cycle. An interference decision part 5 decides that there is interference when both a received signal level SL and the number Np of dummy error pulses exceed specific values.