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Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris

Channel estimation techniques for Multiple-input Multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) based on comb type pilot arrangement with least-square error (LSE) estimator was investigated with space-time-frequency (STF) diversity implementation. The frequency offset in OFDM...

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Main Authors: Ibrahim, Nur Farahiah, Abu Bakar, Zahari, Idris, Azlina
Format: Article
Language:English
Published: Institute of Research Management and Innovation (IRMI) 2015
Subjects:
Error analysis (Mathematics). Theory of errors. Least squares
Orthogonal frequency division multiplexing
Online Access:http://ir.uitm.edu.my/id/eprint/13582/1/AJ_NUR%20FARAHIAH%20%20SRJ%2015%201.pdf
http://ir.uitm.edu.my/id/eprint/13582/
https://srj.uitm.edu.my/
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spelling my.uitm.ir.135822016-05-30T06:10:34Z http://ir.uitm.edu.my/id/eprint/13582/ Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris Ibrahim, Nur Farahiah Abu Bakar, Zahari Idris, Azlina Error analysis (Mathematics). Theory of errors. Least squares Orthogonal frequency division multiplexing Channel estimation techniques for Multiple-input Multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) based on comb type pilot arrangement with least-square error (LSE) estimator was investigated with space-time-frequency (STF) diversity implementation. The frequency offset in OFDM effected its performance. This was mitigated with the implementation of the presented inter-carrier interference selfcancellation (ICI-SC) techniques and different space-time subcarrier mapping. STF block coding in the system exploits the spatial, temporal and frequency diversity to improve performance. Estimated channel was fed into a decoder which combined the STF decoding together with the estimated channel coefficients using LSE estimator for equalization. The performance of the system was compared by measuring the symbol error rate with a PSK-16 and PSK-32. The results show that subcarrier mapping together with ICI-SC were able to increase the system performance. Introduction of channel estimation was also able to estimate the channel coefficient at only 5dB difference with a perfectly known channel. Institute of Research Management and Innovation (IRMI) 2015 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/13582/1/AJ_NUR%20FARAHIAH%20%20SRJ%2015%201.pdf Ibrahim, Nur Farahiah and Abu Bakar, Zahari and Idris, Azlina (2015) Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris. Scientific Research Journal, 12 (1). pp. 25-37. ISSN 1675-7009 https://srj.uitm.edu.my/
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Error analysis (Mathematics). Theory of errors. Least squares
Orthogonal frequency division multiplexing
spellingShingle Error analysis (Mathematics). Theory of errors. Least squares
Orthogonal frequency division multiplexing
Ibrahim, Nur Farahiah
Abu Bakar, Zahari
Idris, Azlina
Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris
description Channel estimation techniques for Multiple-input Multiple-output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) based on comb type pilot arrangement with least-square error (LSE) estimator was investigated with space-time-frequency (STF) diversity implementation. The frequency offset in OFDM effected its performance. This was mitigated with the implementation of the presented inter-carrier interference selfcancellation (ICI-SC) techniques and different space-time subcarrier mapping. STF block coding in the system exploits the spatial, temporal and frequency diversity to improve performance. Estimated channel was fed into a decoder which combined the STF decoding together with the estimated channel coefficients using LSE estimator for equalization. The performance of the system was compared by measuring the symbol error rate with a PSK-16 and PSK-32. The results show that subcarrier mapping together with ICI-SC were able to increase the system performance. Introduction of channel estimation was also able to estimate the channel coefficient at only 5dB difference with a perfectly known channel.
format Article
author Ibrahim, Nur Farahiah
Abu Bakar, Zahari
Idris, Azlina
author_facet Ibrahim, Nur Farahiah
Abu Bakar, Zahari
Idris, Azlina
author_sort Ibrahim, Nur Farahiah
title Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris
title_short Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris
title_full Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris
title_fullStr Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris
title_full_unstemmed Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris
title_sort improving space-time-frequency mimoofdm with ici self-cancellation scheme using least square error estimator / nur farahiah ibrahim, zahari abu bakar and azlina idris
publisher Institute of Research Management and Innovation (IRMI)
publishDate 2015
url http://ir.uitm.edu.my/id/eprint/13582/1/AJ_NUR%20FARAHIAH%20%20SRJ%2015%201.pdf
http://ir.uitm.edu.my/id/eprint/13582/
https://srj.uitm.edu.my/
_version_ 1685648416966705152
score 13.211869

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