| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of processes and power consumption. SOLUTION: A searching correlator 211 executes correlation operation while changing the time lag between a demodulated base band signal and a spread code received from a spread code generator 210 to find out a correlation value. A delay profile preparation part 212 sequentially writes integration values found out by the correlator 211 in a memory 220 to prepare a delay profile. An integrator 213 integrates the correlation values found out by the correlator 211 for a prescribed interval, e.g. for one slot. An operation switching part 214 discriminates whether a correlation value integrated by the integrator 213 is larger than a prescribed reference value, and at the time of judging that the correlation value is larger than the reference value, a path searching part 215 is started to search for a path. At the time of judging that the integrated correlation value is smaller than the reference value, the operation of individual portions is stopped and switched to a sleep state. |
