Receiver adapted for determining an estimation of interferences when receiving an OFDM signal made of packets, each packet comprising a first training field, a second training field, at least two header fields and data field, comprising:Means for detecting a first symbol value of a first header fields and a second symbol value of a second header field, said first and second header fields beholding to said at least two header fields and the modulation scheme being different between said first and second header fields andMeans for determining said estimation from said first and second symbol values.
