Management of coexistence of communicating sub-systems in wireless devices

An apparatus for calibrating coexistence of a plurality of wirelessly communicating sub-systems within a wireless device wherein the plurality of wirelessly communicating sub-systems comprises a plurality of transmitters and a plurality of receivers which are interconnected through one or more interfaces, the apparatus comprising:

• a unit configured for activating a single one of the transmitters while maintaining the other transmitters off by causing said transmitter to transmit a first signal with a known set of characteristics;
• a unit configured for measuring unwanted signal received at each of the plurality of receivers and originating from a coupling of said receivers with the activated transmitter;
• a unit configured for storing coupling data derived from each of the measured unwanted signals in relation with the set of signal characteristics of the first signal and/or a set of unwanted signal characteristics, whereby forming a calibration database usable by a unit configured for adjusting operation of one or more of the plurality of transmitters and/or receivers to manage the coexistence of the plurality of wirelessly communicating sub-systems during normal operation of the wireless device;
• and
• wherein the activating, measuring and storing are repeated for each of the plurality of transmitters.