Modeling of code acquisition process in CDMA networks - Asynchronous systems

被引：9

作者：

Katz, MD ^{[1
]}

Glisic, S

机构：

[1] Nokia Networks, FIN-90651 Oulu, Finland

[2] Univ Oulu, Ctr Wireless Commun, FIN-90014 Oulu, Finland

[3] Univ Oulu, Dept Elect Engn, Telecommun Lab, FIN-90571 Oulu, Finland

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2000年 / 18卷 / 01期

关键词：

code acquisition; code division multiple access (CDMA); synchronization;

D O I：

10.1109/49.821722

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

In this paper, we discuss modeling of serial code acquisition process in a code division multiple access (CDMA) network. Due to multiple access interference (MAI), the process is characterized by a different probability of signal detection P-D and probability of a false alarm P-FA in each cell of the code delay uncertainty region. We derive exact expressions for average code acquisition time and its variance. In addition to this, we also present several useful approximations, which enable easy engineering use of these results for practical applications in future universal mobile telecommunications system (UMTS) solutions. Numerical results based on this analysis are used for decision threshold optimization in code acquisition process for asynchronous CDMA networks.

引用

页码：73 / 86

页数：14

共 13 条

[1]

Subspace-based channel estimation for code division multiple access communication systems [J].