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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