3 results about "Linearizer" patented technology

A concurrent multi-band linearized transmitter (CMLT) has a concurrent digital multi-band predistortion block (CDMPB) and a concurrent multi-band transmitter (CMT) connected to the CDMPB. The CDMPB can have a plurality of digital baseband signal predistorter blocks (DBSPBs), an analyzing and modeling (A&M) stage, and a signal observation feedback loop. Each DBSPB can have a plurality of inputs, each corresponding to a single frequency band of the multi-band input signal, and its output corresponding to a single frequency band; each output connect corresponding to an input of the CMLT. The A&M stage can have a plurality of outputs connected to and updating the parameters of the DBSPBs, and a plurality of inputs connected to either both outputs of the signal observation loop or the output of the subsampling loop and to outputs of the DBSPBs. The A&M stage can perform signals' time alignment, reconstruction of signals and compute parameters of DBSPBs.

There is provided mechanisms for enabling linearization of a non-linear electronic device. A method is performed by a linearizer device. The method comprises receiving an input signal destined to be input to the non-linear electronic device. Input-output characteristics of the non-linear electronic device is in the linearizer device represented by a linearization function defined by a LUT based model of base functions. The linearizer device is configured to in a greedy pursuit framework select the base functions according to a signal reconstruction criterion. The method comprises obtaining an output signal by subjecting the input signal to the linearization function. The method comprises providing the output signal, instead of the input signal, as input to the non-linear electronic device, thereby enabling linearization of the non-linear electronic device.

FIELD: radio engineering.SUBSTANCE: device for digital linearization of a power amplifier is proposed, comprising a power amplifier, a linearizer, a digital-to-analogue converter connected to the first output of the linearizer, for converting a digital linearized signal for setting the power amplifier into an analogue signal for adjusting the gain of the power amplifier. A digital frequency synthesizer is introduced, the input of which is connected to the second output of the linearizer, and the output is connected to the input of a power amplifier, to the output of which an attenuator, a signal conversion device that converts a high-frequency signal into a low-frequency analogue signal, and an analogue-to-digital converter, the output of which is connected to the input of the linearizer, are connected in series, and the linearizer records the value corresponding to the specified power at the output of the power amplifier, which is then compared with the current values of the power of the power amplifier, supplied to the linearizer from the output of the analogue-to-digital converter.EFFECT: simplification of the digital linearization device of a power amplifier.3 cl, 2 dwg