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Robertson, Patrick and Kaiser, Stefan (2000) Analysis of Doppler spread perturbations in OFDM(A) systems. European Transactions on Telecommunications, 11 (6). ETT.
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Abstract
We analyze the e�ects of Doppler spread in mobile channels on Orthogonal Frequency Division Multiplex �OFDM� systems� This is important� since channel variations during one OFDM symbol cause Inter Sub� Carrier Interference �ICI� in OFDM systems� which degrades the performance� since ICI can be seen as additional near�Gaussian noise� The analysis is presented and closed�form results are given for numerous important practical Doppler spread encountered in mobile channels and applications such as mobile reception of DVB�T� We also show that for the case of asymmetrical Doppler spreads� the frequency correction of the receiver can be adjusted so as to minimize the ICI� To extend our work to OFDM�A� mobile radio systems where many users� contributions to the ICI overlap� we have introduced the concept of an equivalent single� user which causes the total ICI� in order to use the same analytical framework� and compared the uplink and downlink cases� Simulation results con�rm our analysis and show the importance of the analytical tool to perform realistic system analysis without having to resort to time consuming time�domain simulations�
| Item URL in elib: | https://elib.dlr.de/22625/ | |||||||||
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| Document Type: | Article | |||||||||
| Title: | Analysis of Doppler spread perturbations in OFDM(A) systems | |||||||||
| Authors: |
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| Date: | November 2000 | |||||||||
| Journal or Publication Title: | European Transactions on Telecommunications | |||||||||
| Open Access: | Yes | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Volume: | 11 | |||||||||
| Publisher: | ETT | |||||||||
| Status: | Published | |||||||||
| Keywords: | OFDM Multicarrier systems Mobile channels Doppler spread | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||
| HGF - Program: | Space (old) | |||||||||
| HGF - Program Themes: | W - no assignment | |||||||||
| DLR - Research area: | Space | |||||||||
| DLR - Program: | W - no assignment | |||||||||
| DLR - Research theme (Project): | W - no assignment (old) | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Institute of Communication and Navigation > Communications Systems | |||||||||
| Deposited By: | Robertson, Dr.-Ing. Patrick | |||||||||
| Deposited On: | 23 Apr 2009 | |||||||||
| Last Modified: | 31 Jul 2019 19:16 |
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