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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| Format: | Article |
| Language: | English |
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Institute of Research Management and Innovation (IRMI)
2015
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| Subjects: | |
| Online Access: | https://ir.uitm.edu.my/id/eprint/13582/1/AJ_NUR%20FARAHIAH%20%20SRJ%2015%201.pdf |
| _version_ | 1796899862342533120 |
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| author | Ibrahim, Nur Farahiah Abu Bakar, Zahari Idris, Azlina |
| author_facet | Ibrahim, Nur Farahiah Abu Bakar, Zahari Idris, Azlina |
| author_sort | Ibrahim, Nur Farahiah |
| collection | UITM |
| 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. |
| first_indexed | 2024-03-06T01:27:11Z |
| format | Article |
| id | oai:ir.uitm.edu.my:13582 |
| institution | Universiti Teknologi MARA |
| language | English |
| last_indexed | 2024-03-06T01:27:11Z |
| publishDate | 2015 |
| publisher | Institute of Research Management and Innovation (IRMI) |
| record_format | dspace |
| spelling | oai:ir.uitm.edu.my:135822016-05-30T06:10:34Z https://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 srj 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 https://ir.uitm.edu.my/id/eprint/13582/1/AJ_NUR%20FARAHIAH%20%20SRJ%2015%201.pdf Improving space-time-frequency MIMOOFDM with ICI self-cancellation scheme using least square error estimator / Nur Farahiah Ibrahim, Zahari Abu Bakar and Azlina Idris. (2015) Scientific Research Journal <https://ir.uitm.edu.my/view/publication/Scientific_Research_Journal/>, 12 (1). pp. 25-37. ISSN 1675-7009 https://srj.uitm.edu.my/ |
| 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 |
| 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_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_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_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 |
| topic | Error analysis (Mathematics). Theory of errors. Least squares Orthogonal frequency division multiplexing |
| url | https://ir.uitm.edu.my/id/eprint/13582/1/AJ_NUR%20FARAHIAH%20%20SRJ%2015%201.pdf |
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