Title :
Scrambling code planning for 3GPP W-CDMA systems
Author :
Jung, Young-Ho ; Lee, Yong H.
Author_Institution :
Dept. of EECS, Korea Adv. Inst. of Technol., Taejon, South Korea
Abstract :
Two types of scrambling code planning methods for multi-layer asynchronous 3GPP W-CDMA systems are developed by modifying the PN offset planning methods for synchronous CDMA systems. One is based on the reuse of code sets and the other is based on the graph coloring optimization. A condition that guarantees no code set confusion is derived. Design examples demonstrate that the graph coloring based method can be more efficient than the reuse-based method, and applicable to a wide variety of real W-CDMA networks
Keywords :
cellular radio; code division multiple access; graph colouring; multiuser channels; optimisation; pseudonoise codes; spread spectrum communication; telecommunication network planning; 3GPP W-CDMA systems; PN offset planning methods; W-CDMA networks; cellular radio; code sets reuse; graph coloring optimization; multi-layer asynchronous systems; scrambling code planning; synchronous CDMA systems; Base stations; Code division multiplexing; Gain; Multiaccess communication; Optimization methods; Propagation losses; Radio frequency; Strategic planning;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944037
