Patent ID: 7292836

Claim:
A direct conversion receiver DCR for receiving a multi-carrier signal including at least a first and a second carrier signal, being located at image carrier frequencies, via an antenna, comprising: a quadrature demodulator for down-convening said multi carrier signal to a baseband resulting in that the first carrier signal includes an image signal of said second carrier signal and that the second carrier signal includes an image signal of said first carrier signal; analog to digital AD converters for digitizing the down-converted multi-carrier complex signal; at least a first and a second digital down convener DDC unit for separating the first and the second carrier signal from the digitized down-convened multi-carrier signal and for translating the separated first and second carrier signal to be centered at a predetermined frequency in the frequency plane, respectively; an error estimating unit for calculating a compensating coefficient representing the quota and/or the phase position of the image signal of the second carrier signal being included in the fist carrier signal and a compensating coefficient representing the quota and/or the phase position of the image signal of the first carrier signal being included in the second carrier signal; and at least a first compensator stage for removing the undesired image signal from the first carrier signal in response to said compensating coefficient representing the quota and/or the phase position of the image signal of the second carrier signal being included in the first carrier signal.