Correction of specific intermodulation products in a concurrent multi-band system

A concurrent multi-band transmitter system for compensating for one or more specific Intermodulation Distortion, IMD, products in the concurrent multi-band transmitter system, comprising:

• IMD digital predistortion circuitry operable to generate an IMD correction signal for a specific IMD product as a function of two or more frequency band input signals for two or more frequency bands of a concurrent multi-band signal, the specific IMD product being an arbitrary IMD product comprising a non-simple odd-order IMD product or an even-order IMD product;
• and
• tuning circuitry operable to frequency translate the IMD correction signal to a desired frequency that corresponds to a radio frequency location of the specific IMD product;
• and
• wherein the concurrent multi-band transmitter system is operable to, after frequency translation of the IMD correction signal to the desired frequency, utilize the IMD correction signal to compensate for the specific IMD product.

A concurrent multi-band transmitter system for compensating for one or more specific Intermodulation Distortion, IMD, products in a concurrent multi-band transmitter system, wherein the concurrent multi-band transmitter system comprises:

• one or more transmitters;
• and
• processing circuitry configured to cause the concurrent multi-band transmitter system to:
• generate an IMD correction signal for a specific IMD product as a function of two or more frequency band input signals for two or more frequency bands of a concurrent multi-band signal, the IMD product being an arbitrary order IMD product comprising a non-simple odd-order IMD product or an even order IMD product;
• frequency translate the IMD correction signal to a desired frequency that corresponds to a radio frequency location of the specific IMD product;
• and
• after frequency translating the IMD correction signal to the desired frequency, utilize the IMD correction signal to compensate for the specific IMD product.