Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas
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...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/69164/ http://psasir.upm.edu.my/id/eprint/69164/1/Time-domain%20adaptive%20channel%20estimation%20for%20OFDM-based%20WLAN%20with%20multiple-antennas.pdf |
| _version_ | 1848856326709444608 |
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| author | Hezam, Mohammed Abdo Saeed Mohd Ali, Borhanuddin Noordin, Nor Kamariah Khatun, Sabira Ismail, Mahamod |
| author_facet | Hezam, Mohammed Abdo Saeed Mohd Ali, Borhanuddin Noordin, Nor Kamariah Khatun, Sabira Ismail, Mahamod |
| author_sort | Hezam, Mohammed Abdo Saeed |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-15T11:39:53Z |
| format | Conference or Workshop Item |
| id | upm-69164 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:39:53Z |
| publishDate | 2008 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-691642019-06-12T07:36:13Z http://psasir.upm.edu.my/id/eprint/69164/ Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas Hezam, Mohammed Abdo Saeed Mohd Ali, Borhanuddin Noordin, Nor Kamariah Khatun, Sabira Ismail, Mahamod 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. IEEE 2008 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/69164/1/Time-domain%20adaptive%20channel%20estimation%20for%20OFDM-based%20WLAN%20with%20multiple-antennas.pdf 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). 10.1109/ICCCE.2008.4580608 |
| spellingShingle | Hezam, Mohammed Abdo Saeed Mohd Ali, Borhanuddin Noordin, Nor Kamariah Khatun, Sabira Ismail, Mahamod Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas |
| title | Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas |
| title_full | Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas |
| title_fullStr | Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas |
| title_full_unstemmed | Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas |
| title_short | Time-domain adaptive channel estimation for OFDM-based WLAN with multiple-antennas |
| title_sort | time-domain adaptive channel estimation for ofdm-based wlan with multiple-antennas |
| url | http://psasir.upm.edu.my/id/eprint/69164/ http://psasir.upm.edu.my/id/eprint/69164/ http://psasir.upm.edu.my/id/eprint/69164/1/Time-domain%20adaptive%20channel%20estimation%20for%20OFDM-based%20WLAN%20with%20multiple-antennas.pdf |