Primary Synchronization Signal in e-UTRA

In this paper, the authors describe the signal design for primary synchronization channel adopted for E-UTRA cellular system. By designing the signal to be centrally symmetric in the time-domain, the symmetric samples can be added prior to multiplication with the replica sample, thereby saving one multiplication per two received samples. Furthermore, a pair of centrally symmetric P-SCH signals can be generated such that one signal is a complex conjugated version of the other signal. The multiplication complexity of detecting both these signals can be reduced to that of just one of the signals.