Title :
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
fDate :
6/23/1905 12:00:00 AM
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 Eb/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;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956490
