Neighbor Cell Search scheme and method for W-CDMA Mobile station

摘要

PURPOSE: An apparatus and method for searching an adjacent BTS(Base Transceiver Station) of an MS(Mobile Station) is provided to search the adjacent BTS for a soft handover in the MS. CONSTITUTION: A channel estimator(32) estimates a channel from a random slot of a random path of a multi-path signal received from a home BTS, outputs the estimated channel, and outputs multi-path signal arrival signal information. A controller(33) stores a part of time index having a relatively high auto-correlation function value among sampling values of an auto-correlation function of a primary synchronous channel code signal received from the home BTS and a weight value according to the time index, receives multi-path signal arrival time information, and outputs a timing signal. A multiplier(31) multiplies a channel estimating value to a corresponding path, a weight value according to the time index inputted from the controller(33), a transmission diversity indication bit to a common control physical channel, and a primary synchronous channel power to a common pilot channel power ratio under the control of the timing signal of the controller(33). Subtracters(34,35) subtract an output signal of the multiplier(31) from an output signal of a primary synchronous channel matching filter(11) according to each channel and provide the subtracted value to a non-coherent combiner(12).