METHOD FOR SYNCHRONIZING FRAMES USING OPTIMUM PILOT PATTERN

摘要

PURPOSE: A method for synchronizing frames using an optimum pilot pattern is provided to use a pilot pattern having double length of the number of slots to synchronize the frames when an uplink or a downlink of an international mobile telecommunication(IMT)-2000 system utilizes a code sequence which does not have an even-numbered length, so as to exactly and quickly perform frame synchronization. CONSTITUTION: A pilot sequence has a double length compared to slot lengths per radio frame according to an optional chip rate. The pilot sequence is received on a communication link through each physical channel. The pilot sequence is arranged to correspond to the slot lengths. The pilot sequence is shifted as 1-time according to a received location, and is applied with a primary correlation process. A sum result of the primary correlation process is delayed as 1-bit time, and the sum result is added to the sum result of the primary correlation process again, to produce a secondary correlation process result. A third correlation process result is produced from the secondary correlation process result. The third correlation process corresponds to the slot lengths. Each correlation process result is combined as over one by over one, and is added to confirm synchronization relating to radio frames, by using a final correlation process result.