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MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations

In this paper, exponentially-weighted recursive least squared (EW-RLS) channel estimation for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is investigated. Channel estimation in time-domain (TD) as well as frequency-domain (FD) is investigated throu...

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Main Authors: Hezam, Mohammed Abdo Saeed, Mohd Ali, Borhanuddin, Khatun, Sabira, Noordin, Nor Kamariah, Ismail, Mahamod
格式: Conference or Workshop Item
語言:English
出版: IEEE 2007
在線閱讀:http://psasir.upm.edu.my/id/eprint/47667/1/MIMO%20OFDM%20channel%20estimation%20based%20on%20RLS%20algorithm%20the%20time-%20versus%20frequency-domain%20implementations.pdf
http://psasir.upm.edu.my/id/eprint/47667/
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spelling my.upm.eprints.476672016-07-14T02:20:14Z http://psasir.upm.edu.my/id/eprint/47667/ MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations Hezam, Mohammed Abdo Saeed Mohd Ali, Borhanuddin Khatun, Sabira Noordin, Nor Kamariah Ismail, Mahamod In this paper, exponentially-weighted recursive least squared (EW-RLS) channel estimation for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is investigated. Channel estimation in time-domain (TD) as well as frequency-domain (FD) is investigated through exploiting preambles and pilot symbols inserted in TD and FD, respectively. The channel is assumed to be slowly time-varying frequency-selective, constant during one OFDM symbol but changing from symbol to symbol. Simulation results show that the TD EW-RLS estimator has better estimation performance in terms of the mean-squares error (MSE) and bit-error rate (BER), compared to FD EW-RLS estimation approach. The computational complexity is significantly reduced by recursively updating the channel estimates and by applying the matrix inversion lemma. IEEE 2007 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/47667/1/MIMO%20OFDM%20channel%20estimation%20based%20on%20RLS%20algorithm%20the%20time-%20versus%20frequency-domain%20implementations.pdf Hezam, Mohammed Abdo Saeed and Mohd Ali, Borhanuddin and Khatun, Sabira and Noordin, Nor Kamariah and Ismail, Mahamod (2007) MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations. In: 2007 Asia-Pacific Conference on Communications, 18-20 Oct. 2007, Bangkok, Thailand. (pp. 547-550). 10.1109/APCC.2007.4433546
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description In this paper, exponentially-weighted recursive least squared (EW-RLS) channel estimation for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is investigated. Channel estimation in time-domain (TD) as well as frequency-domain (FD) is investigated through exploiting preambles and pilot symbols inserted in TD and FD, respectively. The channel is assumed to be slowly time-varying frequency-selective, constant during one OFDM symbol but changing from symbol to symbol. Simulation results show that the TD EW-RLS estimator has better estimation performance in terms of the mean-squares error (MSE) and bit-error rate (BER), compared to FD EW-RLS estimation approach. The computational complexity is significantly reduced by recursively updating the channel estimates and by applying the matrix inversion lemma.
format Conference or Workshop Item
author Hezam, Mohammed Abdo Saeed
Mohd Ali, Borhanuddin
Khatun, Sabira
Noordin, Nor Kamariah
Ismail, Mahamod
spellingShingle Hezam, Mohammed Abdo Saeed
Mohd Ali, Borhanuddin
Khatun, Sabira
Noordin, Nor Kamariah
Ismail, Mahamod
MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations
author_facet Hezam, Mohammed Abdo Saeed
Mohd Ali, Borhanuddin
Khatun, Sabira
Noordin, Nor Kamariah
Ismail, Mahamod
author_sort Hezam, Mohammed Abdo Saeed
title MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations
title_short MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations
title_full MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations
title_fullStr MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations
title_full_unstemmed MIMO OFDM channel estimation based on RLS algorithm: the time- versus frequency-domain implementations
title_sort mimo ofdm channel estimation based on rls algorithm: the time- versus frequency-domain implementations
publisher IEEE
publishDate 2007
url http://psasir.upm.edu.my/id/eprint/47667/1/MIMO%20OFDM%20channel%20estimation%20based%20on%20RLS%20algorithm%20the%20time-%20versus%20frequency-domain%20implementations.pdf
http://psasir.upm.edu.my/id/eprint/47667/
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score 13.251813

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