IEICE TRANSACTIONS on Communications
A Simple and Feasible Decision-Feedback Channel Tracking Scheme for MIMO-OFDM Systems
Summary :
This paper proposes a simple and feasible decision-feedback channel tracking scheme for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems designed for wireless local area networks (LANs). In the proposed scheme, the channel state matrix for each subcarrier is tentatively estimated from a replica matrix of the transmitted signals. The estimated channel matrices, each derived at a different timing, are combined, and the previously estimated channel matrices are replaced with the latest ones. Unlike conventional channel tracking schemes based on a Kalman filter, the proposed scheme needs no statistical information about a MIMO channel, which makes the receiver structure quite simple. The packet error rate (PER) performances for the proposed scheme are evaluated on computer simulations. When there are three transmit and receive antennas, the subcarrier modulation scheme is 64 QAM, and the coding rate is 3/4, the proposed scheme keeps the SNR degradation at PER of 1e-2 less than 0.1 dB when the velocity of receiver is 3 km/h in an indoor office environment at 5 GHz band. In addition, compared to the conventional channel tracking scheme based on known pilot symbols, the proposed scheme improves throughput performance by 13.8% because it does not need pilot symbols. These results demonstrate that the proposed channel tracking scheme is simple and feasible for implementation in MIMO-OFDM systems based on wireless LANs.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E90-B No.5 pp.1052-1060
- Publication Date
- 2007/05/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1093/ietcom/e90-b.5.1052
- Type of Manuscript
- Special Section PAPER (Special Section on Advanced Transfer Technologies for the Next Generation Network)
- Category
Authors
Keyword
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Yusuke ASAI, Wenjie JIANG, Takeshi ONIZAWA, Atsushi OHTA, Satoru AIKAWA, "A Simple and Feasible Decision-Feedback Channel Tracking Scheme for MIMO-OFDM Systems" in IEICE TRANSACTIONS on Communications,
vol. E90-B, no. 5, pp. 1052-1060, May 2007, doi: 10.1093/ietcom/e90-b.5.1052.
Abstract: This paper proposes a simple and feasible decision-feedback channel tracking scheme for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems designed for wireless local area networks (LANs). In the proposed scheme, the channel state matrix for each subcarrier is tentatively estimated from a replica matrix of the transmitted signals. The estimated channel matrices, each derived at a different timing, are combined, and the previously estimated channel matrices are replaced with the latest ones. Unlike conventional channel tracking schemes based on a Kalman filter, the proposed scheme needs no statistical information about a MIMO channel, which makes the receiver structure quite simple. The packet error rate (PER) performances for the proposed scheme are evaluated on computer simulations. When there are three transmit and receive antennas, the subcarrier modulation scheme is 64 QAM, and the coding rate is 3/4, the proposed scheme keeps the SNR degradation at PER of 1e-2 less than 0.1 dB when the velocity of receiver is 3 km/h in an indoor office environment at 5 GHz band. In addition, compared to the conventional channel tracking scheme based on known pilot symbols, the proposed scheme improves throughput performance by 13.8% because it does not need pilot symbols. These results demonstrate that the proposed channel tracking scheme is simple and feasible for implementation in MIMO-OFDM systems based on wireless LANs.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e90-b.5.1052/_p
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@ARTICLE{e90-b_5_1052,
author={Yusuke ASAI, Wenjie JIANG, Takeshi ONIZAWA, Atsushi OHTA, Satoru AIKAWA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Simple and Feasible Decision-Feedback Channel Tracking Scheme for MIMO-OFDM Systems},
year={2007},
volume={E90-B},
number={5},
pages={1052-1060},
abstract={This paper proposes a simple and feasible decision-feedback channel tracking scheme for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems designed for wireless local area networks (LANs). In the proposed scheme, the channel state matrix for each subcarrier is tentatively estimated from a replica matrix of the transmitted signals. The estimated channel matrices, each derived at a different timing, are combined, and the previously estimated channel matrices are replaced with the latest ones. Unlike conventional channel tracking schemes based on a Kalman filter, the proposed scheme needs no statistical information about a MIMO channel, which makes the receiver structure quite simple. The packet error rate (PER) performances for the proposed scheme are evaluated on computer simulations. When there are three transmit and receive antennas, the subcarrier modulation scheme is 64 QAM, and the coding rate is 3/4, the proposed scheme keeps the SNR degradation at PER of 1e-2 less than 0.1 dB when the velocity of receiver is 3 km/h in an indoor office environment at 5 GHz band. In addition, compared to the conventional channel tracking scheme based on known pilot symbols, the proposed scheme improves throughput performance by 13.8% because it does not need pilot symbols. These results demonstrate that the proposed channel tracking scheme is simple and feasible for implementation in MIMO-OFDM systems based on wireless LANs.},
keywords={},
doi={10.1093/ietcom/e90-b.5.1052},
ISSN={1745-1345},
month={May},}
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TY - JOUR
TI - A Simple and Feasible Decision-Feedback Channel Tracking Scheme for MIMO-OFDM Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 1052
EP - 1060
AU - Yusuke ASAI
AU - Wenjie JIANG
AU - Takeshi ONIZAWA
AU - Atsushi OHTA
AU - Satoru AIKAWA
PY - 2007
DO - 10.1093/ietcom/e90-b.5.1052
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E90-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2007
AB - This paper proposes a simple and feasible decision-feedback channel tracking scheme for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems designed for wireless local area networks (LANs). In the proposed scheme, the channel state matrix for each subcarrier is tentatively estimated from a replica matrix of the transmitted signals. The estimated channel matrices, each derived at a different timing, are combined, and the previously estimated channel matrices are replaced with the latest ones. Unlike conventional channel tracking schemes based on a Kalman filter, the proposed scheme needs no statistical information about a MIMO channel, which makes the receiver structure quite simple. The packet error rate (PER) performances for the proposed scheme are evaluated on computer simulations. When there are three transmit and receive antennas, the subcarrier modulation scheme is 64 QAM, and the coding rate is 3/4, the proposed scheme keeps the SNR degradation at PER of 1e-2 less than 0.1 dB when the velocity of receiver is 3 km/h in an indoor office environment at 5 GHz band. In addition, compared to the conventional channel tracking scheme based on known pilot symbols, the proposed scheme improves throughput performance by 13.8% because it does not need pilot symbols. These results demonstrate that the proposed channel tracking scheme is simple and feasible for implementation in MIMO-OFDM systems based on wireless LANs.
ER -
English
