General pilot-aided scheme for OFDM reception in fast varying channels
In high mobility scenarios, the channel variation over an OFDM symbol period destroys subcarrier orthogonality, and results in intercarrier interference (ICI). Recently, a piece-wise linear model has been proposed to mitigate ICI by approximating the channel variation over an OFDM symbol by linear m...
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my.utm.340972017-08-22T08:42:33Z http://eprints.utm.my/id/eprint/34097/ General pilot-aided scheme for OFDM reception in fast varying channels Abd. Rahman, Tharek Seman, Norhudah TK Electrical engineering. Electronics Nuclear engineering In high mobility scenarios, the channel variation over an OFDM symbol period destroys subcarrier orthogonality, and results in intercarrier interference (ICI). Recently, a piece-wise linear model has been proposed to mitigate ICI by approximating the channel variation over an OFDM symbol by linear model. However, for high Doppler spread the channel over an OFDM symbol exhibit high order variation. In this paper, a generalized scheme is proposed, where the channel variation over an OFDM symbol is approximated by a general polynomial model. Simulation results show that, at a high Doppler spread, the proposed scheme can achieve a significant improvement in the BER of OFDM over the piece-wise estimator. 2012 Conference or Workshop Item PeerReviewed Abd. Rahman, Tharek and Seman, Norhudah (2012) General pilot-aided scheme for OFDM reception in fast varying channels. In: International Conference on Computer & Communication Engineering 2012, 3-5 Jul 2012, Kuala Lumpur, Malaysia. http://www.iium.edu.my/iccce/12/ |
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TK Electrical engineering. Electronics Nuclear engineering Abd. Rahman, Tharek Seman, Norhudah General pilot-aided scheme for OFDM reception in fast varying channels |
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In high mobility scenarios, the channel variation over an OFDM symbol period destroys subcarrier orthogonality, and results in intercarrier interference (ICI). Recently, a piece-wise linear model has been proposed to mitigate ICI by approximating the channel variation over an OFDM symbol by linear model. However, for high Doppler spread the channel over an OFDM symbol exhibit high order variation. In this paper, a generalized scheme is proposed, where the channel variation over an OFDM symbol is approximated by a general polynomial model. Simulation results show that, at a high Doppler spread, the proposed scheme can achieve a significant improvement in the BER of OFDM over the piece-wise estimator. |
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Conference or Workshop Item |
author |
Abd. Rahman, Tharek Seman, Norhudah |
author_facet |
Abd. Rahman, Tharek Seman, Norhudah |
author_sort |
Abd. Rahman, Tharek |
title |
General pilot-aided scheme for OFDM reception in fast varying channels |
title_short |
General pilot-aided scheme for OFDM reception in fast varying channels |
title_full |
General pilot-aided scheme for OFDM reception in fast varying channels |
title_fullStr |
General pilot-aided scheme for OFDM reception in fast varying channels |
title_full_unstemmed |
General pilot-aided scheme for OFDM reception in fast varying channels |
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general pilot-aided scheme for ofdm reception in fast varying channels |
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2012 |
url |
http://eprints.utm.my/id/eprint/34097/ http://www.iium.edu.my/iccce/12/ |
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1643649512815722496 |
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13.160551 |