Arkhipov, A. ; Schnell, M. (2006)
Frequency offset estimation for IFDMA uplink Systems.
Global Telecommunications Conference (IEEE GLOBECOM 2006). San Francisco, CA, USA (27.11.2006-01.12.2006)
doi: 10.1109/GLOCOM.2006.238
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
This paper proposes two frequency offset estimation algorithms for the uplink of an interleaved frequency-division multiple-access (IFDMA) system. One algorithm performs estimation in the frequency domain and the other in the time domain. Both algorithms are based on the maximum likelihood estimation (MLE) principle and use knowledge about pilot symbols. IFDMA utilizes a block-interleaved frequency allocation scheme to exploit the frequency diversity of the channel. In the presence of frequency offsets between users, multiple-access interference (MAI) appears, which has a negative impact on existing frequency offset estimation algorithms. The proposed algorithms are robust, since a special construction of pilot symbols allows to exclude a large amount of MAI in the presence of frequency offsets between users. As a result, the proposed time domain frequency estimation algorithm outperforms the frequency domain algorithm and all other known schemes.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Arkhipov, A. ; Schnell, M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Frequency offset estimation for IFDMA uplink Systems |
| Sprache: | Englisch |
| Publikationsjahr: | 2006 |
| Ort: | Piscataway |
| Verlag: | IEEE |
| Buchtitel: | IEEE Globecom 2006 |
| Veranstaltungstitel: | Global Telecommunications Conference (IEEE GLOBECOM 2006) |
| Veranstaltungsort: | San Francisco, CA, USA |
| Veranstaltungsdatum: | 27.11.2006-01.12.2006 |
| DOI: | 10.1109/GLOCOM.2006.238 |
| Kurzbeschreibung (Abstract): | This paper proposes two frequency offset estimation algorithms for the uplink of an interleaved frequency-division multiple-access (IFDMA) system. One algorithm performs estimation in the frequency domain and the other in the time domain. Both algorithms are based on the maximum likelihood estimation (MLE) principle and use knowledge about pilot symbols. IFDMA utilizes a block-interleaved frequency allocation scheme to exploit the frequency diversity of the channel. In the presence of frequency offsets between users, multiple-access interference (MAI) appears, which has a negative impact on existing frequency offset estimation algorithms. The proposed algorithms are robust, since a special construction of pilot symbols allows to exclude a large amount of MAI in the presence of frequency offsets between users. As a result, the proposed time domain frequency estimation algorithm outperforms the frequency domain algorithm and all other known schemes. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik |
| Hinterlegungsdatum: | 20 Nov 2008 08:25 |
| Letzte Änderung: | 22 Nov 2024 10:26 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum