Double-dwell serial search algorithm with multi-level threshold values in DS-CDMA systems

Author

Lee, Chaehag ; Kim, Jaeseok ; Lee, Seongjoo ; Jun, Sunghwan

Author_Institution

Dept. of Electr. & Comput. Eng., Yonsei Univ., Seoul, South Korea

Volume

1

fYear

2000

fDate

2000

Firstpage

522

Abstract

In this paper, a double-dwell serial search algorithm having multi-level threshold values is proposed to mitigate the possible performance degradation caused by the use of single pair thresholds in a PN code acquisition system. We present a mathematical model and performance analysis of the proposed algorithm in DS-CDMA systems. We also compare the mean code acquisition time of our algorithm with that of a conventional scheme under IMT-2000 channel models. It is shown that our scheme outperforms the conventional method having one pair of threshold values by 0.2-0.3 sec with respect to the mean code acquisition time

Keywords

code division multiple access; mobile radio; pseudonoise codes; spread spectrum communication; telecommunication channels; DS-CDMA systems; IMT-2000 channel models; PN code acquisition system; double-dwell serial search algorithm; mean code acquisition time; multi-level threshold values; performance degradation; pseudonoise codes; single pair thresholds; Degradation; Electronic switching systems; Hardware; Interference cancellation; Mathematical model; Multiaccess communication; Performance analysis; Phase detection; Search methods; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-6394-9

Type

conf

DOI

10.1109/ICCT.2000.889258

Filename

889258