[en] Joint amplification of multiple carriers with a single wideband high power amplifier (HPA) has been considered towards reusing the satellite resources among multiple links to reduce the mission cost. The non-linear characteristic of the HPA, especially near saturation, coupled with the on-board IMUX/ OMUX filters result in non-linear adjacent carrier interference (ACI) and inter-symbol interference (ISI) during multicarrier power amplification. To benefit from the advantages of multicarrier transmissions, on-ground techniques to mitigate the non-linear distortions need to be devised. These techniques include predistortion at the transmitter and equalization at the receiver. Several works have considered the use of multicarrier predistortion along with single carrier equalization. A symbol synchronous equalizer, while being simple to implement, may not necessarily provide for the optimum linear filter. Towards improving the performance, fractionally spaced equalizers (FSE) have been considered. Such receivers are shown to provide enhanced performance by effectively compensating for the group delay distortions. The objective of this work is to consider the use of FSE in the context of multicarrier transmissions over non-linear channels and illustrate their performance enhancements
Disciplines :
Electrical & electronics engineering
Author, co-author :
Piazza, Roberto ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Shankar, Bhavani ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Berheide, Tobias; TZR
Graesslin, Michael; TZR
Cioni, Stefano; TEC-ETC
External co-authors :
yes
Language :
English
Title :
Performance Analysis of Fractionally Spaced Equalization in Non-linear Multicarrier Satellite Channels
Publication date :
05 August 2014
Event name :
ICSSC
Event date :
4-7 August 2014
Audience :
International
Main work title :
Proceedings of 32nd AIAA International Communications Satellite Systems Conference (ICSSC),
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