METHOD AND APPAPATUS FOR APPLICATION OF DISTORTION SHAPING WHEN USING PEAK-TO-AVERAGE RATIO REDUCTION

摘要

Method and an apparatus (100, 500, 600, 800, 210) for application of distortion shaping when using Peak-to-Average Ratio, "PAR",reduction, The apparatus obtains (301) an input signal. The apparatus applies (302), on the input signal, the PAR reduction and the distortion shaping, whereby an output signalis formed. Abandwidth (403, 406, 411, 413, 414) associated with the distortion shaping covers multiple channel bandwidths (401a-c, 402) comprised in the input signal, which multiple channel bandwidths (401a-c, 402) are associated with one or more Radio Access Technologies, "RATs". Embodiments herein facilitate the distortion shapingand applicability of PAR reduction, in particular in case one of the RATs is Global System for Mobile Communications, "GSM", or similar and/or the input signal is associated with radio communications systems that support multiple RATs.