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Joint Predistortion and PAPR Reduction in Multibeam Satellite Systems
Mengali, Alberto; Shankar, Bhavani; Ottersten, Björn
2016In Proceedings of IEEE ICC 2016
Peer reviewed
 

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Abstract :
[en] Precoding for multibeam satellites with aggressive frequency reuse has attracted interest of late towards enhancing system capacity. Most of the works on precoding mitigate the linear co-channel interference between the beams caused by frequency reuse. How- ever, the high power amplifier (HPA), an integral part of the satellite payload, is inherently non linear. Non-linear amplification combined with the linear co-channel interference introduces non- linear co-channel distortions at the receiver. Further, signals with very high peak to average power ratios (PAPR), typical of spectrally efficient modulations, are sensitive to the non-linear characteristic of the HPA and necessitate large back-off to have manageable distortion levels. In this work, a novel architecture comprising multistream Crest Factor Reduction (signal pre-clipping) and Signal Predistortion (SPD) in cascade, is devised to counter the non- linearities and co-channel interference in multibeam satellite sys- tems. An iterative algorithm to optimize the parameters of the signal clipping and predistortion is devised taking recourse to analytical derivations. The proposed joint estimation paradigm is shown to compare favorably with state-of-art and provides a framework to combine predistortion and precoding.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Mengali, Alberto ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Shankar, Bhavani  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
no
Language :
English
Title :
Joint Predistortion and PAPR Reduction in Multibeam Satellite Systems
Publication date :
May 2016
Event name :
IEEE International Conference on Communications (ICC), Kuala Lampur, Malaysia
Event date :
23-27 May 2016
Audience :
International
Main work title :
Proceedings of IEEE ICC 2016
Peer reviewed :
Peer reviewed
Name of the research project :
RECONTRE
Funders :
FNR under AFR Scheme
Available on ORBilu :
since 15 March 2016

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