Analysis for time offset of PN sequence in CDMA system

The need for increased capacity in the cellular system has resulted in the technology with CDMA as method. It has been recognized that the distinction of the base station is important for its performance in CDMA, since the same spreading sequences are used by the all base stations. Time pseudo-random noise binary code distinguish signals received at a mobile station from different from base stations. But the start of the zero offset PN sequence is chosen arbitrary without the background of the systematic and mathematical elaboration. This paper proposes a method that define the start of the zero offset PN sequence mathematically. This paper also discusses a method that can easily calculate the time offset of the received spreading sequence with respect to the zero offset PN sequence