Intermediate frequency PN code acquisition employing sequential detection algorithm for satellite CDMA system

Author

Yuchu, Ma ; Xuemai, Gu ; Naitong, Zhang

Author_Institution

Commun. Res. Center, Harbin Inst. of Technol., China

Volume

4

fYear

2001

fDate

2001

Firstpage

2980

Abstract

An intermediate frequency (IF) hybrid sequential code acquisition scheme designed for satellite CDMA systems is proposed. The received signal is directly sampled in IF using a 1-bit A/D converter. A continuous accumulator is utilized to increase effective signal-to-noise ratio (SNR), which is different from most of the sequential acquisition schemes. By employing this structure, faster acquisition can be achieved. This scheme has been verified by computer simulation proving that it can provide better performance then both the conventional sequential and serial acquisition scheme

Keywords

code division multiple access; mobile satellite communication; pseudonoise codes; sequential codes; spread spectrum communication; 1-bit A/D converter; DS-CDMA; PN code acquisition; SNR; computer simulation; continuous accumulator; intermediate frequency hybrid sequential code acquisition; satellite communication system; sequential detection algorithm; signal-to-noise ratio; Application specific integrated circuits; Artificial satellites; Computer simulation; Detection algorithms; Frequency synchronization; Multiaccess communication; Sampling methods; Sequential analysis; Signal to noise ratio; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944148

Filename

944148