Eine CDMA Mobilstation mit Leistungsersparung unter Verwendung eines anpassbaren Korrelationsfensters in der Pfadsuche

摘要

A mobile station for use in a Code Division Multiple Access (CDMA) wireless communications system with a base station in which the length of the correlation time window is adjusted based on information on distance between the base station and the mobile station. The information on distance is preferably estimated based on information from the base station on its transmitted power. As an alternative the distance can be based on information from the satellite based Global Positioning System (GPS). By adapting the length of the correlation time window to the distance from the base station considerable power can be saved.