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Time Varying Channel Estimation for Amplify-and-Forward Relay Network

Rabbi, M. F. and Yusnita, Rahayu and Kamarul Hawari, Ghazali (2015) Time Varying Channel Estimation for Amplify-and-Forward Relay Network. In: Proceedings of the 4th International Conference on Computer Science & Computational Mathematics (ICCSCM 2015), 7-8 May 2015 , Langkawi, Kedah. pp. 527-531..

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For high Doppler spread channel scenario, in this paper, we develop a channel estimation method for Orthogonal Frequency Division Multiple Access (OFDMA) based Amplifyand-Forward (AF) relay network. Specifically, using Basis Expansion Model (BEM) the fast time varying channels in Source-Relay and Relay-Destination links are approximated. Then a Least Square (LS) and a Linear MMSE (LMMSE) based algorithm is applied to estimate BEM coefficients which are used for channel reconstruction later. Then, we simulate some practical cases of user mobility. Simulation results indicate that the proposed estimators perform consistently in high Doppler spread scenario.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Publisher: Science and Knowledge Research Society ISBN: 978-967-114-14-9-6
Uncontrolled Keywords: AF Relay, OFDMA, Channel estimation
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Electrical & Electronic Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 02 Nov 2015 01:58
Last Modified: 21 Feb 2018 06:24
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