RADIO PACKET RECEIVING DEVICE

摘要

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to set a pattern decision threshold used to decide a synchronous word to cope with troubles of misdecision making and overlooking of the synchronous word due to noise. SOLUTION: The pattern decision threshold used by a decision unit 6 to decide the synchronous word is varied by a threshold control circuit 3 according to a receive signal level detected by a level detector 2 to totally reduce both the probability that a random pattern is misdecided as the synchronous word when a packet signal is not received and the probability that the synchronous word is overlooked when the packet signal is received.