Design of High-Speed Preamble Searcher for RACH Preamble Structure in WCDMA Reverse Link Receiver

Eun-Sun JUNG; Hyung-Jin CHOI

doi:10.1093/ietcom/e89-b.11.2990

Design of High-Speed Preamble Searcher for RACH Preamble Structure in WCDMA Reverse Link Receiver

Eun-Sun JUNG, Hyung-Jin CHOI

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In this paper, we propose a high speed Preamble Searcher suitable for the RACH (Random Access Channel) structure in WCDMA reverse link receivers. Unlike IS-95, WCDMA system uses the AISMA (Acquisition Indication Sense Multiple Access) scheme. Because of the time limit between RACH preamble transmission and AI (Acquisition Indicators), and the restriction on the number of RACH signatures assigned to RACH preamble, fast acquisition is required for efficient operation. The Preamble Searcher proposed in this paper is designed for 2-antenna systems; it adopts the FHT (Fast Hadamard Transform) algorithm that has the radix-2 16 point FFT (Fast Fourier Transform) structure. The acquisition speed using FHT is 32 times faster than the conventional method that correlates each signature. Based on this fast acquisition scheme, we improved the acquisition performance by calculating correlation up to 4096 chips of the total preamble length.

Publication: IEICE TRANSACTIONS on Communications Vol.E89-B No.11 pp.2990-2997

Publication Date: 2006/11/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e89-b.11.2990

Type of Manuscript: PAPER

Category: Transmission Systems and Transmission Equipment for Communications

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Eun-Sun JUNG, Hyung-Jin CHOI, "Design of High-Speed Preamble Searcher for RACH Preamble Structure in WCDMA Reverse Link Receiver" in IEICE TRANSACTIONS on Communications, vol. E89-B, no. 11, pp. 2990-2997, November 2006, doi: 10.1093/ietcom/e89-b.11.2990.
Abstract: In this paper, we propose a high speed Preamble Searcher suitable for the RACH (Random Access Channel) structure in WCDMA reverse link receivers. Unlike IS-95, WCDMA system uses the AISMA (Acquisition Indication Sense Multiple Access) scheme. Because of the time limit between RACH preamble transmission and AI (Acquisition Indicators), and the restriction on the number of RACH signatures assigned to RACH preamble, fast acquisition is required for efficient operation. The Preamble Searcher proposed in this paper is designed for 2-antenna systems; it adopts the FHT (Fast Hadamard Transform) algorithm that has the radix-2 16 point FFT (Fast Fourier Transform) structure. The acquisition speed using FHT is 32 times faster than the conventional method that correlates each signature. Based on this fast acquisition scheme, we improved the acquisition performance by calculating correlation up to 4096 chips of the total preamble length.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e89-b.11.2990/_p

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@ARTICLE{e89-b_11_2990,
author={Eun-Sun JUNG, Hyung-Jin CHOI, },
journal={IEICE TRANSACTIONS on Communications},
title={Design of High-Speed Preamble Searcher for RACH Preamble Structure in WCDMA Reverse Link Receiver},
year={2006},
volume={E89-B},
number={11},
pages={2990-2997},
abstract={In this paper, we propose a high speed Preamble Searcher suitable for the RACH (Random Access Channel) structure in WCDMA reverse link receivers. Unlike IS-95, WCDMA system uses the AISMA (Acquisition Indication Sense Multiple Access) scheme. Because of the time limit between RACH preamble transmission and AI (Acquisition Indicators), and the restriction on the number of RACH signatures assigned to RACH preamble, fast acquisition is required for efficient operation. The Preamble Searcher proposed in this paper is designed for 2-antenna systems; it adopts the FHT (Fast Hadamard Transform) algorithm that has the radix-2 16 point FFT (Fast Fourier Transform) structure. The acquisition speed using FHT is 32 times faster than the conventional method that correlates each signature. Based on this fast acquisition scheme, we improved the acquisition performance by calculating correlation up to 4096 chips of the total preamble length.},
keywords={},
doi={10.1093/ietcom/e89-b.11.2990},
ISSN={1745-1345},
month={November},}

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TY - JOUR
TI - Design of High-Speed Preamble Searcher for RACH Preamble Structure in WCDMA Reverse Link Receiver
T2 - IEICE TRANSACTIONS on Communications
SP - 2990
EP - 2997
AU - Eun-Sun JUNG
AU - Hyung-Jin CHOI
PY - 2006
DO - 10.1093/ietcom/e89-b.11.2990
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E89-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2006
AB - In this paper, we propose a high speed Preamble Searcher suitable for the RACH (Random Access Channel) structure in WCDMA reverse link receivers. Unlike IS-95, WCDMA system uses the AISMA (Acquisition Indication Sense Multiple Access) scheme. Because of the time limit between RACH preamble transmission and AI (Acquisition Indicators), and the restriction on the number of RACH signatures assigned to RACH preamble, fast acquisition is required for efficient operation. The Preamble Searcher proposed in this paper is designed for 2-antenna systems; it adopts the FHT (Fast Hadamard Transform) algorithm that has the radix-2 16 point FFT (Fast Fourier Transform) structure. The acquisition speed using FHT is 32 times faster than the conventional method that correlates each signature. Based on this fast acquisition scheme, we improved the acquisition performance by calculating correlation up to 4096 chips of the total preamble length.
ER -