Device and method for processing a signal

A processing device (40) for processing or treating a complex input signal representing a sequence of symbols multiplexing orthogonal frequency division, OFDM, in a radio receiver (10) comprising a plurality of processing paths ( P1-PN), wherein each processing path (P1-PN) comprises: - a complex mixer (CM1-CMN) adapted to move in frequency the complex input signal using a local oscillator signal associated with the complex mixer (CM1 -CMN); and - a selection filter analog channel (CSF1-CSFN), operatively connected to an output port of the complex mixer (CM1-CMN), arranged to filter an output signal of the complex mixer (CM1- CMN); oscillator unit (70) arranged to provide the local oscillator signal associated with the complex mixer (CM1-CMN) of each processing path; and a control unit (60) adapted to - receive control data; - determine based on the control data, locations subcarrier in at least one symbol of individual OFDM sequence of OFDM symbols, one or more resource blocks allocated to the radio receiver (10), where a block resource defines a non-empty set of adjacent subcarriers to each of a nonempty set of consecutive OFDM symbols; and - for each of said at least one symbol of individual OFDM, control local oscillator signals associated with the complex mixer (CM1-CMN) based on the locations of certain subcarrier and the passbands (110a-d, 310a-d) of the filter channel selection (CSF1-CSFN) so that each set of adjacent subcarriers, defined by resource blocks allocated to the radio receiver (10) within the OFDM symbol is transferred in frequency by a mixer (CM1-CMN) complex processing routes (P1-PN) to display within the passband of the following filter channel selection (CSF1-CSFN).