ORCID Profile
0000-0003-0477-919X
Current Organisations
University of South Australia
,
Univ of South Australia
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Publisher: IEEE
Date: 2013
Publisher: IEEE
Date: 05-2017
Publisher: IEEE
Date: 06-2014
Publisher: IEEE
Date: 2013
Publisher: IEEE
Date: 08-2013
Publisher: Wiley
Date: 12-03-2023
DOI: 10.1002/SAT.1474
Abstract: The nonlinear power lifier and the analogue output channel filter with nonconstant group delay add nonlinear and linear distortions to the satellite transmitted signal, respectively. Recently, there has been growing interest in using Wiener predistorters, consisting of separate nonlinear and linear components, to compensate for these distortions in the satellite downlinks. The Wiener predistorter has been shown to effectively deal with signal distortions and has lower complexity compared to other state‐of‐the‐art methods. In this paper, we argue that fully compensating the nonconstant group‐delay distortion degrades the overall performance of the Wiener predistortion systems. This is primarily due to the increased peak‐to‐average power ratio of the signal at the output of the linear predistorter. We show that the overall performance of the Wiener predistorter can be improved by undercompensating the group‐delay distortion. We propose two optimizations to address the PAPR growth problem and show using simulations that our approach leads to significant improvement in predistortion performance. Using our Wiener predistorter, the total degradation gap to the ideal limiter channel can be reduced to merely 0.34 dB for 64‐APSK modulated signals.
Publisher: IEEE
Date: 2013
Publisher: Elsevier BV
Date: 03-2013
Publisher: IEEE
Date: 2016
Publisher: IEEE
Date: 02-2010
Publisher: IEEE
Date: 2011
Publisher: IEEE
Date: 12-2014
Publisher: IEEE
Date: 12-2015
Publisher: Elsevier BV
Date: 08-2015
Publisher: IEEE
Date: 05-2019
Publisher: IEEE
Date: 2012
Publisher: Elsevier BV
Date: 12-2010
Publisher: Springer International Publishing
Date: 2020
Publisher: IEEE
Date: 2012
Publisher: IEEE
Date: 2016
Publisher: IEEE
Date: 10-2014
Publisher: The Optical Society
Date: 06-05-2013
DOI: 10.1364/AO.52.003260
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2018
Publisher: Wiley
Date: 02-2010
DOI: 10.1002/DAC.1052
Publisher: IEEE
Date: 2011
Publisher: Springer Science and Business Media LLC
Date: 16-05-2018
Publisher: IEEE
Date: 10-2018
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2009
Publisher: IEEE
Date: 2013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2009
No related grants have been discovered for William Cowley.