Linearity enhancement for concurrent transmission systems and methods
AssigneeIntel IP Corporation
InventorEmanuel Cohen
Life of this patent
Estimating the term…
Abstract
A system using multiple communication technologies for concurrent transmission is disclosed. The system includes a first technology modem, a second technology modem, and a transmit chain. The first technology modem is configured to provide a first technology signal for transmission using a first communication technology. The second technology modem is configured to provide a second technology signal for transmission using a second communication technology. The second communication technology is varied from the first communication technology. The transmit chain is configured to develop a combined envelope and to generate a transmit signal from the first technology signal and the second technology signal using the combined envelope.
Claims20
A system using multiple communication technologies for concurrent transmission comprising:
- a first technology modem configured to provide a first technology signal for transmission using a first communication technology, the first technology signal having an associated first envelope;
- a second technology modem configured to provide a second technology signal for transmission using a second communication technology, the second technology signal having an associated second envelope;
- and
- a transmit chain configured to generate a combined envelope and a transmit signal from the first technology signal and the second technology signal using the combined envelope, wherein the transmit chain includes an alignment component configured to align a phase and frequency of the second envelope with the first envelope based on a feedback signal and to combine the first envelope and the phase and frequency aligned second envelope into the combined envelope.
A predistortion system for multiple communication technologies comprising:
- an alignment component configured to align a phase and frequency of a second envelope of a second technology signal with a first envelope of a first technology signal based on a feedback signal derived from a predistorted signal;
- an envelope adder configured to combine the phase and frequency aligned second envelope with the first envelope to form a combined envelope;
- a combiner configured to combine predistortions from a look up table based on the combined envelope with an input signal to generate the predistorted signal;
- and
- a transmit chain configured to generate a transmit signal based on the predistorted signal.
A method of operating a communication system using multiple communication technologies, the method comprising:
- obtaining a first envelope for a first communication technology and a second envelope for a second communication technology;
- aligning the second envelope with the first envelope according to a plurality of alignment parameters based at least partially on a feedback signal;
- generating a combined envelope from the first envelope and the aligned second envelope;
- obtaining combined distortions for the first communication technology and the second communication technology using the combined envelope;
- and
- applying the combined distortions to an input signal to generate a predistorted signal;
- and
- generating a transmit signal using the predistorted signal.
Dependencies are inferred from the claim text.