A novel matched filter for primary synchronization channel in W-CDMA

The timing relationship between base stations is asynchronous in a W-CDMA system. So the three-step cell search algorithm is introduced in 3GPP protocols in order to fast identify the special base station. The first step, primary synchronous channel (P-SCH) acquisition, is very important, but the conventional matched filter consumes much large hardware resources. Because the P-SCH is composed of the generalised hierarchical Golay (GHG) sequence, we propose a novel GHG matched filter according to the its structural property, which extremely reduces the hardware complexity. Generally speaking, such a GHGMF structure is significant for engineering applications.