Threshold decision technique for direct sequence code synchronisation in a fading mobile channel

Author

You, Y.-H. ; Moon, T.-H. ; Kim, J.H. ; Kang, C.E.

Author_Institution

Dept. of Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

144

Issue

3

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

155

Lastpage

160

Abstract

The work presents the performance of a threshold decision technique for direct-sequence spread-spectrum code synchronisation. For received PN codes with different SNR, this scheme is able to detect a desired threshold value for verification in the search mode such that the detection probability of the verification mode is maximised and the false alarm probability of the verification mode is minimised. The proposed serial acquisition system is compared to the conventional serial acquisition system, and a significant improvement of performance is shown. Analysis of system performance in both the search and verification modes is presented, and key quantities such as the false alarm probability, the detection probability, and the mean acquisition time are derived in both nonfading and Rayleigh fading environments

Keywords

Rayleigh channels; fading; land mobile radio; probability; pseudonoise codes; signal detection; spread spectrum communication; synchronisation; Rayleigh fading; SNR; detection probability; direct sequence code synchronisation; direct sequence spread spectrum; fading mobile channel; false alarm probability; mean acquisition time; nonfading environment; received PN codes; search mode; serial acquisition system; system performance; threshold decision; verification mode;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19971241

Filename

601046