Pilot signal detecting method, pilot signal detecting apparatus,

Details Pilot signal detecting method, pilot signal detecting apparatus, Pilot signal detecting method, pilot signal detecting apparatus,

1997-03-27

1999-09-14

Vo, Don N.

Pulse or digital communications

Repeaters

Testing

370335, 370342, 370441, 370491, 375206, H04B 169

Patent

active

059533641

ABSTRACT:
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.

REFERENCES:
patent: 5490165 (1996-02-01), Blakeney, II et al.
patent: 5548613 (1996-08-01), Kaku et al.
patent: 5699380 (1997-12-01), Sugita
patent: 5812543 (1998-09-01), Sugita
patent: 5832025 (1998-11-01), Yamamoto

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