Performance of Closed-Loop Transmit Antenna Diversity with Channel Estimation Errors and Feedback Delay
Summary :
The effect of feedback delay and channel estimation error on closed-loop transmit diversity (CTD) systems is investigated in time-selective Rayleigh fading channels. Based on a minimum mean square error (MMSE) channel estimator, the variance of the estimation error is formulated in terms of fading index and the number of transmit antennas. A bit error rate (BER) expression for the CTD system is analytically derived as a function of channel estimation error, feedback delay, and fading index. It is shown that the BER performance of the CTD system improves as the length of training symbols increases and/or the frame length decreases. In the CTD system, more accurate channel estimation scheme is required to achieve its full gain as the number of employed transmit antennas increases. It is also found that the CTD system is applicable to the slowly moving channel environments, such as pedestrians, but not for fast moving vehicles.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E87-B No.11 pp.3289-3294
- Publication Date
- 2004/11/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
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Nam-Soo KIM, Ye Hoon LEE, "Performance of Closed-Loop Transmit Antenna Diversity with Channel Estimation Errors and Feedback Delay" in IEICE TRANSACTIONS on Communications,
vol. E87-B, no. 11, pp. 3289-3294, November 2004, doi: .
Abstract: The effect of feedback delay and channel estimation error on closed-loop transmit diversity (CTD) systems is investigated in time-selective Rayleigh fading channels. Based on a minimum mean square error (MMSE) channel estimator, the variance of the estimation error is formulated in terms of fading index and the number of transmit antennas. A bit error rate (BER) expression for the CTD system is analytically derived as a function of channel estimation error, feedback delay, and fading index. It is shown that the BER performance of the CTD system improves as the length of training symbols increases and/or the frame length decreases. In the CTD system, more accurate channel estimation scheme is required to achieve its full gain as the number of employed transmit antennas increases. It is also found that the CTD system is applicable to the slowly moving channel environments, such as pedestrians, but not for fast moving vehicles.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e87-b_11_3289/_p
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@ARTICLE{e87-b_11_3289,
author={Nam-Soo KIM, Ye Hoon LEE, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance of Closed-Loop Transmit Antenna Diversity with Channel Estimation Errors and Feedback Delay},
year={2004},
volume={E87-B},
number={11},
pages={3289-3294},
abstract={The effect of feedback delay and channel estimation error on closed-loop transmit diversity (CTD) systems is investigated in time-selective Rayleigh fading channels. Based on a minimum mean square error (MMSE) channel estimator, the variance of the estimation error is formulated in terms of fading index and the number of transmit antennas. A bit error rate (BER) expression for the CTD system is analytically derived as a function of channel estimation error, feedback delay, and fading index. It is shown that the BER performance of the CTD system improves as the length of training symbols increases and/or the frame length decreases. In the CTD system, more accurate channel estimation scheme is required to achieve its full gain as the number of employed transmit antennas increases. It is also found that the CTD system is applicable to the slowly moving channel environments, such as pedestrians, but not for fast moving vehicles.},
keywords={},
doi={},
ISSN={},
month={November},}
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TY - JOUR
TI - Performance of Closed-Loop Transmit Antenna Diversity with Channel Estimation Errors and Feedback Delay
T2 - IEICE TRANSACTIONS on Communications
SP - 3289
EP - 3294
AU - Nam-Soo KIM
AU - Ye Hoon LEE
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E87-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2004
AB - The effect of feedback delay and channel estimation error on closed-loop transmit diversity (CTD) systems is investigated in time-selective Rayleigh fading channels. Based on a minimum mean square error (MMSE) channel estimator, the variance of the estimation error is formulated in terms of fading index and the number of transmit antennas. A bit error rate (BER) expression for the CTD system is analytically derived as a function of channel estimation error, feedback delay, and fading index. It is shown that the BER performance of the CTD system improves as the length of training symbols increases and/or the frame length decreases. In the CTD system, more accurate channel estimation scheme is required to achieve its full gain as the number of employed transmit antennas increases. It is also found that the CTD system is applicable to the slowly moving channel environments, such as pedestrians, but not for fast moving vehicles.
ER -
English
