Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas

Citation

Hezam, Mohammed Abdo Saeed and Mohd Ali, Borhanuddin and Noordin, Nor Kamariah and Khatun, Sabira and Ismail, Mahamod (2008) Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas. In: International Conference on Computer and Communication Engineering 2008 (ICCCE08), 13-15 May 2008, Kuala Lumpur, Malaysia. (pp. 261-265).

Abstract

In this paper, an adaptive time-domain (TD) channel estimation scheme, based on recursive least squares (RLS) algorithm, is proposed for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) based wireless local area networks (WLANs). The estimator is then extended to perform decision-directed (DD) channel tracking during data transmission. The channel is assumed to be constant during one OFDM symbol but evolves in time according to the first-order Markov process. Different training rates at different Doppler frequencies were investigated. Simulation results show that the proposed estimation scheme has excellent performance measured in terms of the mean squares error (MSE) and the bit error rate (BER), provided that the forgetting factor of the RLS algorithm is optimally selected.

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Additional Metadata

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Engineering
DOI Number:	https://doi.org/10.1109/ICCCE.2008.4580608
Publisher:	IEEE
Keywords:	MIMO; OFDM; Channel estimation; Time-domain adaptive channel estimation
Depositing User:	Nabilah Mustapa
Date Deposited:	12 Jun 2019 07:36
Last Modified:	12 Jun 2019 07:36
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/ICCCE.2008.4580608
URI:	http://psasir.upm.edu.my/id/eprint/69164
Statistic Details:	View Download Statistic

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