Cell search algorithms and optimization in W-CDMA
Y.-P.E. Wang, Tony Ottosson · 2002
In this paper, algorithms for cell search in W-CDMA are presented. Two scenarios of cell search are considered: (i) the initial cell search when a mobile station is switched on; and (ii) the target cell search in idle and active modes. For the initial cell search, large frequency errors (e.g. 20 kHz) are considered. The performance of cell search in these scenarios are presented. It is found that by optimizing key system parameters such as the primary synchronization channel, synchronization channel, and common pilot channel loading factors, the average cell search time can be significantly reduced.