Discrete time cancellation for providing coexistence in radio frequency communication systems

A transceiver comprising:

• a receive channel configured to process a radio frequency receive signal to generate a digital baseband receive signal;
• a first observation channel configured to process a first radio frequency observation signal to generate a first digital observation signal;
• a spectral regrowth baseband sampling circuit configured to process the first digital observation signal to generate spectral regrowth observation data;
• and
• a discrete time cancellation circuit configured to compensate the digital baseband receive signal for radio frequency signal leakage based on the spectral regrowth observation data and on direct transmit leakage observation data, the direct transmit leakage observation data indicating an amount of direct transmit leakage present in an aggressor radio frequency transmit signal.

A method of coexistence management in a mobile device, the method comprising:

• processing a radio frequency receive signal to generate a digital baseband receive signal using a receive channel of a first transceiver;
• processing a first radio frequency observation signal to generate a first digital observation signal using a first observation channel of the first transceiver;
• generating spectral regrowth observation data based on processing process the first digital observation signal using a first spectral regrowth baseband sampling circuit of the first transceiver;
• and
• compensating the digital baseband receive signal for radio frequency signal leakage based on the spectral regrowth observation data and on direct transmit leakage observation data using a discrete time cancellation circuit of the first transceiver, the spectral regrowth observation data indicating an amount of aggressor spectral regrowth present in the radio frequency receive signal, and the direct transmit leakage observation data indicating an amount of direct transmit leakage present in an aggressor radio frequency transmit signal.