Patent ID: 7366233
Filing Date: 2008-04-29
Classification: H04L

Abstract:
1. An arrangement for demodulation and modulation error measurement of a digitally modulated receive signal with a receive filter, and a following demodulator for error compensation and for determining ideal symbol samples, wherein measuring signals are output from the demodulator, wherein a first measuring signal is filtered in a reference filter and a second measuring signal is filtered using a weighting filtered function, the first measuring signal and the second measuring signal are then evaluated in a following evaluation circuit, wherein the second measuring signal of the demodulators is filtered in a measuring filter and the weighting filter function is formed by cascaded functions of the receive filter and the measuring filter, with the demodulator directly between the receive and measuring filters, and wherein the weighting filtering function is determined by the convolution operation relationship: weighting filtering=receive filter*measuring filter such that the first measuring signal is directly passed from the demodulator to the measuring filter without having been delayed in a memory prior to being input to the demodulator.