초록 ▼

In a pilot signal detecting method, a pilot signal detecting apparatus, and a receiver, deterioration of communication quality can be prevented in environments where out-of-lock is more likely to occur due to a reduced reception level of a pilot signal. When a demodulator is suffering from out-of-lo

In a pilot signal detecting method, a pilot signal detecting apparatus, and a receiver, deterioration of communication quality can be prevented in environments where out-of-lock is more likely to occur due to a reduced reception level of a pilot signal. When a demodulator is suffering from out-of-lock with an assigned timing, timings used in respective demodulators are excluded from timing candidates to be newly assigned to the demodulator in the out-of-lock state, such that a timing of a pilot signal, with which a received signal can be demodulated, is selected from the remaining timing candidates. Since the timings currently used in the respective demodulators in a receiver are excluded from timing candidates to be newly assigned so that a new timing selected from the remaining timing candidates is assigned to the demodulator in the out-of-lock state, it is possible to prevent second out-of-lock and accordingly avoid the receiver falling into repetitions of the detection of a pilot signal and the assignment of a timing to a demodulator in the out-of-lock state.

대표청구항 ▼

[ What is claimed is:] [1.] A pilot signal detecting method for receiving spread-spectrum signals transmitted from plural base stations using a code division multiple access scheme, detecting pilot signals sent from said base stations from said received spread-spectrum signals, and assigning timings

[ What is claimed is:] [1.] A pilot signal detecting method for receiving spread-spectrum signals transmitted from plural base stations using a code division multiple access scheme, detecting pilot signals sent from said base stations from said received spread-spectrum signals, and assigning timings corresponding to said detected pilot signals to each of plural demodulators, said method comprising the steps of:when a demodulator is in an out-of-lock state with a timing assigned thereto, excluding the timing corresponding to said pilot signal used in said demodulator in the out-of-lock state and timings corresponding to pilot signals used in remaining demodulators from timing candidates to be newly assigned to said demodulator in the out-of-lock state; andassigning a timing corresponding to said pilot signal, with which the received signal can be demodulated, from said timing candidates excluding the timing corresponding to said pilot signal used in said demodulator in the out-of-lock state and the timings corresponding to said pilot signals used in the remaining demodulators to said demodulator in the out-of-lock state.