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...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2007
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| Online Access: | http://psasir.upm.edu.my/id/eprint/47667/1/MIMO%20OFDM%20channel%20estimation%20based%20on%20RLS%20algorithm%20the%20time-%20versus%20frequency-domain%20implementations.pdf |
| _version_ | 1825929848856510464 |
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| author | Hezam, Mohammed Abdo Saeed Mohd Ali, Borhanuddin Khatun, Sabira Noordin, Nor Kamariah Ismail, Mahamod |
| author_facet | Hezam, Mohammed Abdo Saeed Mohd Ali, Borhanuddin Khatun, Sabira Noordin, Nor Kamariah Ismail, Mahamod |
| author_sort | Hezam, Mohammed Abdo Saeed |
| collection | UPM |
| 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. |
| first_indexed | 2024-03-06T09:02:45Z |
| format | Conference or Workshop Item |
| id | upm.eprints-47667 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:02:45Z |
| publishDate | 2007 |
| publisher | IEEE |
| record_format | dspace |
| spelling | 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 |
| 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 |
| title | 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_short | 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 |
| 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 |
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