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Groh, Ingmar and Utschick, Wolfgang (2008) HIGH RESOLUTION REDUCED COMPLEXITY SYNCHRONIZATION IN SPREAD SPECTRUM SYSTEMS. In: EUSIPCO 2008. European Signal Processing Conference (EUSIPCO 2008), Lausanne (Schweiz).
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Abstract
The estimation of several unknown channel amplitudes and taps in a multipath environment is an important problem when designing receivers both for communication and navigation purposes. A popular approach for these estimation problems are methods solving the maximum likelihood (ML) problem for each dimension separately like the expectation maximization (EM) approach and the more sophisticated space alternating generalized expectation maximization (SAGE) algorithm. However, both methods require a high computational complexity when used in spread spectrum systems due to long spreading sequences. Therefore, we apply methods for decreasing the computational complexity before executing the iterative estimation algorithms. The respective performance is assessed by means of computer simulations for a UMTS scenario which show a negligible degradation in estimation accuracy despite a substantial complexity reduction.
| Item URL in elib: | https://elib.dlr.de/54190/ | |||||||||
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| Document Type: | Conference or Workshop Item (Paper) | |||||||||
| Title: | HIGH RESOLUTION REDUCED COMPLEXITY SYNCHRONIZATION IN SPREAD SPECTRUM SYSTEMS | |||||||||
| Authors: |
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| Date: | 2008 | |||||||||
| Journal or Publication Title: | EUSIPCO 2008 | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Keywords: | Multipath Mitigation | |||||||||
| Event Title: | European Signal Processing Conference (EUSIPCO 2008) | |||||||||
| Event Location: | Lausanne (Schweiz) | |||||||||
| Event Type: | international Conference | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||
| HGF - Program: | Space (old) | |||||||||
| HGF - Program Themes: | W KN - Kommunikation/Navigation | |||||||||
| DLR - Research area: | Space | |||||||||
| DLR - Program: | W KN - Kommunikation/Navigation | |||||||||
| DLR - Research theme (Project): | W - Vorhaben GNSS2/Neue Dienste und Produkte (old) | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Institute of Communication and Navigation > Communications Systems | |||||||||
| Deposited By: | Groh, Ingmar | |||||||||
| Deposited On: | 27 May 2008 | |||||||||
| Last Modified: | 14 Jan 2010 23:33 |
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