| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a signal processing apparatus for reducing a processing time required for breaking from a pseudo synchronizing state. <P>SOLUTION: A decoding unit 20 of a signal processing unit 100 recovers a carrier from a received signal sequence and demodulates the signal sequence according to the recovered carrier. A partial signal acquisition unit 22 acquires a plurality of sequences of partial signals to be corresponding to the sequences of known signals included in the signal sequences demodulated by the demodulation unit at the same period as a prescribed period. A differential interval determining unit 25 respectively cross-references partial signals to be corresponding to the known signals included in the sequences of prescribed preceding and succeeding partial signals among the sequences of the partial signals acquired by the partial signal acquisition unit by using rules with respect to a plurality of differential intervals. A synchronization detection unit 70 detects tentative synchronization by calculating differentiality according to a first rule among the rules with respect to the differential intervals. Further, the synchronization detection unit 70 calculates the differentiality according to a second rule for a differential interval different from that by the first rule among the rules with respect to the differential intervals to detect a pseudo synchronization state. <P>COPYRIGHT: (C)2007,JPO&INPIT |
