Title :
Cell search algorithms and optimization in W-CDMA
Author :
Wang, Yi-Pin Eric ; Ottosson, Tony
Author_Institution :
Ericsson Inc., Research Triangle Park, NC, USA
Abstract :
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
Keywords :
broadband networks; cellular radio; code division multiple access; multiuser channels; optimisation; radio networks; search problems; synchronisation; W-CDMA; active mode; average cell search time reduction; cell search algorithms; cellular radio; common pilot channel loading factors; idle mode; initial cell search; large frequency errors; mobile station; performance; primary synchronization channel; scrambling code identification; synchronization channel; system parameters optimization; target cell search; Code standards; Consumer electronics; Degradation; Downlink; Frequency synchronization; Joining processes; Mass production; Multiaccess communication; Oscillators; Wideband;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851422
