Patent ID: 8086282
Filing Date: 2011-12-27
Classification: H04L

Abstract:
1. An apparatus for reducing peak power in a transmitter for use in telecommunications system, by non-linear processing of an input main signal, where the apparatus comprises successive processing stages, each stage of said apparatus comprises: a peak finder to: a peak selector to: a kernel selector to select, for each selected peak (P) to be reduced, a kernel signal (Ki) that is fractionally-sample shifted with a fractional sample shift value that is equal to a sum of all fractional sample shift values, starting from the determined fractional sample shift value (FSi) up to the present stage ( a kernel manipulator to scale, rotate, and cyclically shift the fractionally-sample shifted kernel signal (Ki) based on information on the selected peak (P); and a combiner to reduce at least the selected peak (P) by generating a peak reduced signal through combination of the scaled, rotated, and shifted kernel signal (Ki) with a delayed version of the input main signal.