Iterative equalization with non-linear soft interference cancellation in non-linear satellite channels
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United States of America Patent
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Aug 12, 2014
Grant Date -
Dec 19, 2013
app pub date -
Feb 4, 2013
filing date -
Jun 13, 2012
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Abstract
A method for removing distortions in a transmitted signal transmitted by a high power amplifier in a satellite communications system. The method characterizes the high power amplifier to define a series of Volterra coefficients and uses those coefficients in an equalizer in a receiver in the communications system to remove the distortions. The equalizer is a non-linear soft interference cancellation and minimum mean square error equalizer that employs three processing operations including parallel soft interference cancellation, minimum mean square error filtering and a priori log-likelihood ratio calculations.
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