Code acquisition in DS/SS system using periodic property of PN code

Author

Kim, Tae-Hoon ; Jang, Kyung-Woon ; Park, Yong-Wan ; Choi, Jeong-Hee

Author_Institution

Willtech Inc., South Korea

Volume

1

fYear

2000

fDate

2000

Firstpage

660

Abstract

An effective code acquisition method using the periodicity property of PN codes and the probability of AWGN is proposed for the DS/SS system. The method of utilizing this periodic property of the spreading signal in a pilot channel is investigated and a simple averaging filter suitable for the AWGN channel is derived. In addition, we describe the method of composing the proposed averaging filter to the conventional acquisition system and the capability of using sequential estimation in a CDMA system with asynchronous mode. The simulation results show that the mean acquisition time is reduced with the proposed acquisition system, especially in the low SNR region

Keywords

AWGN channels; code division multiple access; filtering theory; land mobile radio; multiuser channels; probability; pseudonoise codes; sequential estimation; spread spectrum communication; synchronisation; AWGN channel; AWGN probability; CDMA system; DS/SS system; PN code; asynchronous mode; averaging filter; code acquisition; low SNR region; mean acquisition time; periodic property; pilot channel; sequential estimation; simulation results; spreading signal; AWGN channels; Additive white noise; Base stations; Correlators; Filters; Gaussian noise; Interference; Mobile communication; Multiaccess communication; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851541

Filename

851541