Synchronization control of spread spectrum receiver in mobile station, base station, and correspondent method

摘要

In a mobile communication system, the tracking of synchronization is conducted in a stable state even in a multipath environment. A delay profile detector (102) calculates a delay profile a(n) using a despread signal for each processing unit n. A delay profile averaging unit (103) averages a(n) to produce Ave(¦a(n)¦<2>). A data symbol detector (104) conducts rake combining of the despread signal using a(n) and Ave(¦a(n)¦<2>). According to a(n) and Ave(¦a(n)¦<2>, a weighting function unit (105) calculates a representative value representing delay waves. A loop filter (106) generates a control signal in response to the representative value. A clock controller (107) controls a spread code generator (108) according to the control signal.