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Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers
Joint Authors
Levanen, Toni
Allén, Markus
Valkama, Mikko
Marttila, Jaakko
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-19
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Engineering Sciences and Information Technology
Information Technology and Computer Science
Abstract EN
In modern wideband communication receivers, the large input-signal dynamics is a fundamental problem.
Unintentional signal clipping occurs, if the receiver front-end with the analog-to-digital interface cannot respond to rapidly varying conditions.
This paper discusses digital postprocessing compensation of such unintentional clipping in multiband OFDMA receivers.
The proposed method iteratively mitigates the clipping distortion by exploiting the symbol decisions.
The performance of the proposed method is illustrated with various computer simulations and also verified by concrete laboratory measurements with commercially available analog-to-digital hardware.
It is shown that the clipping compensation algorithm implemented in a turbo decoding OFDM receiver is able to remove almost all the clipping distortion even under significant clipping in fading channel circumstances.
That is to say, it is possible to nearly recover the receiver performance to the level, which would be achieved in the equivalent nonclipped situation.
American Psychological Association (APA)
Allén, Markus& Levanen, Toni& Marttila, Jaakko& Valkama, Mikko. 2012. Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers. Journal of Electrical and Computer Engineering،Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-479270
Modern Language Association (MLA)
Allén, Markus…[et al.]. Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers. Journal of Electrical and Computer Engineering No. 2012 (2012), pp.1-16.
https://search.emarefa.net/detail/BIM-479270
American Medical Association (AMA)
Allén, Markus& Levanen, Toni& Marttila, Jaakko& Valkama, Mikko. Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers. Journal of Electrical and Computer Engineering. 2012. Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-479270
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479270