Improved Multi-Cell Joint Channel Estimation for the TD-SCDMA Downlink

Peng XUE; Ning CAO; Dong Kwan KANG; Duk Kyung KIM

doi:10.1587/transcom.E92.B.1244

Improved Multi-Cell Joint Channel Estimation for the TD-SCDMA Downlink

Peng XUE, Ning CAO, Dong Kwan KANG, Duk Kyung KIM

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In this paper, a multi-cell joint channel estimation (JCE) method is proposed for the TD-SCDMA downlink. In the proposed multi-cell JCE approach, the received midambles from adjacent cells are jointly processed, rather than being treated as interference as in single cell channel estimation. By jointly processing all the received midambles, the user can simultaneously estimate the channel impulse responses (CIRs) for both its home cell and adjacent cells. If the received signal from adjacent cells has a delay, multi-cell JCE is still operable with slight adjustment in the midamble matrix, and the performance loss is also minor. The performance of multi-cell JCE is analyzed and evaluated by simulations. The results demonstrate that the proposed multi-cell JCE method can significantly improve the channel estimation accuracy. When the signal from each cell has similar power level, the mean square error (MSE) of the estimated CIRs for all cells is lower than 0.01. With more accurate CIRs from multi-cell JCE, multi-cell JD also yields better performance compared with the single cell channel estimation methods.

Publication: IEICE TRANSACTIONS on Communications Vol.E92-B No.4 pp.1244-1251

Publication Date: 2009/04/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E92.B.1244

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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Peng XUE, Ning CAO, Dong Kwan KANG, Duk Kyung KIM, "Improved Multi-Cell Joint Channel Estimation for the TD-SCDMA Downlink" in IEICE TRANSACTIONS on Communications, vol. E92-B, no. 4, pp. 1244-1251, April 2009, doi: 10.1587/transcom.E92.B.1244.
Abstract: In this paper, a multi-cell joint channel estimation (JCE) method is proposed for the TD-SCDMA downlink. In the proposed multi-cell JCE approach, the received midambles from adjacent cells are jointly processed, rather than being treated as interference as in single cell channel estimation. By jointly processing all the received midambles, the user can simultaneously estimate the channel impulse responses (CIRs) for both its home cell and adjacent cells. If the received signal from adjacent cells has a delay, multi-cell JCE is still operable with slight adjustment in the midamble matrix, and the performance loss is also minor. The performance of multi-cell JCE is analyzed and evaluated by simulations. The results demonstrate that the proposed multi-cell JCE method can significantly improve the channel estimation accuracy. When the signal from each cell has similar power level, the mean square error (MSE) of the estimated CIRs for all cells is lower than 0.01. With more accurate CIRs from multi-cell JCE, multi-cell JD also yields better performance compared with the single cell channel estimation methods.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.1244/_p

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@ARTICLE{e92-b_4_1244,
author={Peng XUE, Ning CAO, Dong Kwan KANG, Duk Kyung KIM, },
journal={IEICE TRANSACTIONS on Communications},
title={Improved Multi-Cell Joint Channel Estimation for the TD-SCDMA Downlink},
year={2009},
volume={E92-B},
number={4},
pages={1244-1251},
abstract={In this paper, a multi-cell joint channel estimation (JCE) method is proposed for the TD-SCDMA downlink. In the proposed multi-cell JCE approach, the received midambles from adjacent cells are jointly processed, rather than being treated as interference as in single cell channel estimation. By jointly processing all the received midambles, the user can simultaneously estimate the channel impulse responses (CIRs) for both its home cell and adjacent cells. If the received signal from adjacent cells has a delay, multi-cell JCE is still operable with slight adjustment in the midamble matrix, and the performance loss is also minor. The performance of multi-cell JCE is analyzed and evaluated by simulations. The results demonstrate that the proposed multi-cell JCE method can significantly improve the channel estimation accuracy. When the signal from each cell has similar power level, the mean square error (MSE) of the estimated CIRs for all cells is lower than 0.01. With more accurate CIRs from multi-cell JCE, multi-cell JD also yields better performance compared with the single cell channel estimation methods.},
keywords={},
doi={10.1587/transcom.E92.B.1244},
ISSN={1745-1345},
month={April},}

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TY - JOUR
TI - Improved Multi-Cell Joint Channel Estimation for the TD-SCDMA Downlink
T2 - IEICE TRANSACTIONS on Communications
SP - 1244
EP - 1251
AU - Peng XUE
AU - Ning CAO
AU - Dong Kwan KANG
AU - Duk Kyung KIM
PY - 2009
DO - 10.1587/transcom.E92.B.1244
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2009
AB - In this paper, a multi-cell joint channel estimation (JCE) method is proposed for the TD-SCDMA downlink. In the proposed multi-cell JCE approach, the received midambles from adjacent cells are jointly processed, rather than being treated as interference as in single cell channel estimation. By jointly processing all the received midambles, the user can simultaneously estimate the channel impulse responses (CIRs) for both its home cell and adjacent cells. If the received signal from adjacent cells has a delay, multi-cell JCE is still operable with slight adjustment in the midamble matrix, and the performance loss is also minor. The performance of multi-cell JCE is analyzed and evaluated by simulations. The results demonstrate that the proposed multi-cell JCE method can significantly improve the channel estimation accuracy. When the signal from each cell has similar power level, the mean square error (MSE) of the estimated CIRs for all cells is lower than 0.01. With more accurate CIRs from multi-cell JCE, multi-cell JD also yields better performance compared with the single cell channel estimation methods.
ER -