Vector processor supporting linear interpolation on multiple dimensions

A device, comprising:

• a vector addressable memory configured to store a set of discrete data points, with each one of the set of discrete data points representing a result of evaluating a continuous function using a respective discrete data sample as an independent variable of the continuous function;
• a data interface configured to receive a data sample associated with a digital data stream from among a plurality of digital data streams, each one of the plurality of digital data streams being associated with a respective frequency band,
• wherein the data sample corresponds to the independent variable of the continuous function, and
• wherein the continuous function represents a function used to obtain digital pre-distortion (DPD) coefficients to be applied to each one of the plurality of digital data streams, per frequency band, prior to transmission;
• and
• a vector processing engine configured to:
• retrieve, from among the set of discrete data points stored in the vector addressable memory, a subset of discrete data points corresponding to an evaluation of the continuous function for respective data samples;
• evaluate the continuous function using the received data sample as the independent variable of the continuous function by performing a linear interpolation between the subset of discrete data points;
• and
• store, in the vector addressable memory, a result of evaluating the continuous function using the received data sample as the independent variable.

A non-transitory computer-readable memory having instructions stored thereon that, when executed by one or more processors of a vector processing engine, cause the vector processing engine to:

• access a vector addressable memory configured to store a set of discrete data points, with each one of the set of discrete data points representing a result of evaluating a continuous function using a respective discrete data sample as an independent variable of the continuous function;
• receive a data sample associated with a digital data stream from among a plurality of digital data streams, each one of the plurality of digital data streams being associated with a respective frequency band,
• wherein the data sample corresponds to the independent variable of the continuous function, and
• wherein the continuous function represents a function used to obtain digital pre-distortion (DPD) coefficients to be applied to each one of the plurality of digital data streams, per frequency band, prior to transmission;
• retrieve, from among the set of discrete data points stored in the vector addressable memory, a subset of discrete data points corresponding to an evaluation of the continuous function for respective data samples;
• evaluate the continuous function using the received data sample as the independent variable of the continuous function by performing a linear interpolation between the subset of discrete data points;
• and
• store, in the vector addressable memory, a result of evaluating the continuous function using the received data sample as the independent variable.