Fast acquisition scheme and implementation of PRACH in WCDMA system

Author

Qiu, Ling ; Huang, Yoiigjia ; Zhu, Jinkang

Author_Institution

Univ. of Sci. & Technol. of China, Hefei, China

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1701

Abstract

The performance and implementation of PRACH (physical random access channel) acquisition in WCDMA system is investigated. The analysis shows that the conventional methods are not satisfying. Thus we proposed the quasi-matched filter acquisition scheme of PRACH preamble which based on fast Hadamard transform. We implement this method by hardware in the practical WCDMA field trial system. The simulation and test results show that the proposed scheme achieves the following performance: the detection probability with E_b/N₀ =7 dB is not less than 95%, and the mean acquisition time is less than 1.33 ms

Keywords

Hadamard transforms; broadband networks; code division multiple access; filtering theory; matched filters; multiuser channels; probability; signal detection; spread spectrum communication; synchronisation; PRACH preamble; WCDMA system; detection probability; direct-sequence code division multiple access; fast Hadamard transform; fast acquisition scheme; mean acquisition time; physical random access channel; quasi-matched filter acquisition; simulation results; Baseband; Error correction; Error correction codes; Matched filters; Multiaccess communication; Passive filters; Performance evaluation; Phase detection; Signal generators; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th

Conference_Location

Atlantic City, NJ

ISSN

1090-3038

Print_ISBN

0-7803-7005-8

Type

conf

DOI

10.1109/VTC.2001.956490

Filename

956490