GR900100865A - Method and apparatus for digital fomulated reception signals from the high frequency area - Google Patents

Abstract

In a receiver for digitally modulated signals in mobile communication systems, the reception signal can be treated as a complex vector. By means of a mixing stage, (M) the signal is transformed non-coherently as non-heterodyne or heterodyne to the zone base, where an analysis is carried out on an actual and theoretical segment. These segments of the signal are sorted by low pass filters in the low region (frequency) (TP) and digitised by analogue/digital transformers (AD). These analysis values are then converted to a vectorial angle and measurement. The measurement value (B) configures the amplification of the preamplifier (VV) and of the low frequency pass filter (TP), from the difference of the two sequential angle values, (W) the reception data is achieved (D).