Al-Ayyan, F. O. ; Abed-Meraim, K. ; Zoubir, A. M. (2005)
Blind Equalization in OFDM Systems Exploiting Guard Interval Redundancy.
39th Asilomar Conference on Signals, Systems and Computers. Pacific Grove, USA (30.10.2005-02.11.2005)
doi: 10.1109/ACSSC.2005.1599841
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
We introduce a new low-complexity equalizer for OFDM systems, which in the presence of a guard interval, utilizes existing redundancy in the time domain to completely eliminate inter-symbol-interference. We prove that the usage of this guard interval redundancy is sufficient to obtain a zero-forcing time domain equalizer of the channel. The main advantage of this approach resides in its simplicity as the equalizer coefficients are estimated using a second-order least square fitting (LSF). In addition, to fully exploit the data information, we propose to use the previous LSF based equalizer in conjunction with a constant modulus algorithm (CMA). This would help to refine the equalizer estimation, especially for short data lengths, and to improve the system performance. Several implementations are proposed and compared through simulation experiments
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2005 |
| Autor(en): | Al-Ayyan, F. O. ; Abed-Meraim, K. ; Zoubir, A. M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Blind Equalization in OFDM Systems Exploiting Guard Interval Redundancy |
| Sprache: | Englisch |
| Publikationsjahr: | 3 November 2005 |
| Verlag: | IEEE |
| Buchtitel: | Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems & Computers |
| Veranstaltungstitel: | 39th Asilomar Conference on Signals, Systems and Computers |
| Veranstaltungsort: | Pacific Grove, USA |
| Veranstaltungsdatum: | 30.10.2005-02.11.2005 |
| DOI: | 10.1109/ACSSC.2005.1599841 |
| Kurzbeschreibung (Abstract): | We introduce a new low-complexity equalizer for OFDM systems, which in the presence of a guard interval, utilizes existing redundancy in the time domain to completely eliminate inter-symbol-interference. We prove that the usage of this guard interval redundancy is sufficient to obtain a zero-forcing time domain equalizer of the channel. The main advantage of this approach resides in its simplicity as the equalizer coefficients are estimated using a second-order least square fitting (LSF). In addition, to fully exploit the data information, we propose to use the previous LSF based equalizer in conjunction with a constant modulus algorithm (CMA). This would help to refine the equalizer estimation, especially for short data lengths, and to improve the system performance. Several implementations are proposed and compared through simulation experiments |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik > Signalverarbeitung |
| Hinterlegungsdatum: | 09 Okt 2014 12:04 |
| Letzte Änderung: | 15 Nov 2023 11:40 |
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