Patent ID: 6144650
Filing Date: 2000-11-07
Classification: H04B,H04L

Abstract:
A mobile communication system having a plurality of base stations and a plurality of mobile stations, the system comprising:means for communicating between the base stations and the mobile stations according to a spread spectrum-direct sequence Code Division Multiple Access/Time Division Duplex (CDMA/TDD) technique, the minimum time unit of continuous transmission in TDD thereof being a slot, whereineach of said plurality of base stations includes:means for transmitting perch channel data including a unique word having a fixed bit pattern for synchronization wherein the fixed bit pattern is interpolated with respect to each slot; andeach of said plurality of mobile stations performs an automatic gain control (AGC) function for controlling received signals at a constant level and includes:means for receiving perch channel data and acquiring slot synchronization and symbol synchronization.