The timing relationship between base stations is asynchronous in 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 occupies 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 its structural property
which extremely reduces the hardware complexity.Generally speaking
such GHGMF structure is significant for engineering applications.