Alcatel N.v.

Jacques Wenin

Joannes M Sevenhans

Daniel Sallaerts

Arnoul O Vanwelsenaers

The direct conversion receiver DCR receives analog modulating signals with a reference average value and modulated within assigned time slots of a TDMA-structure on a carrier with a carrier frequency FC which changes from time slot to time slot. DCR includes a demodulator circuit DC-coupled to a baseband circuit, the demodulator circuit including a local oscillator LO and a mixer MIX and the baseband circuit including an offset correction circuit OCC/OCC' for updating different variable parameter offset correction values for different FC stored in a memory MEM and compensating offset introduced in DCR. OCC/OCC' determines, upon occurrence of an assigned time slot, an updated offset correction value as a function of an old offset correction value in a corresponding storage location of MEM and the difference between an average value of the analog signal and the reference average value, and thereupon stores the result in the corresponding storage place.

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Louvain-la-Neuve, Belgium

Jacques Wenin