There is provided a frame synchronization method using the correlation characteristic
of a pilot having a minimum side lobe coefficient when the chip rate of the physical
channel up-link or down-link is 3.8 Mcps in a W-CDMA mobile communication system.
The frame synchronization method using an optimal pilot pattern, including the
steps of receiving code sequences with the slot length of (2l+1) for a radio frame
according to an arbitrary chip rate; arranging the received code sequences corresponding
to the slot length for the radio frame and performing auto correlation according
to a reception location of the code sequences, and simultaneously, arranging the
code sequences corresponding to the slot length for the radio frame and performing
cross correlation according to a reception location of the code sequences; and
observing the correlation results, to detect frame synchronization.
