Systems and methods for capacity-based digital pre-distortion optimization
AssigneeSequans Communications
InventorsAmir Kanchuk, Bertrand Debray
Life of this patent
Estimating the term…
Abstract
Some embodiments relate to systems and methods for capacity based DPD optimization. An example method of capacity based DPD optimization includes choosing a DPD adaptation stimulus to facilitate a SNR estimation. The example method also includes initializing DPD coefficients based on setting the DPD coefficients to an initial guess. Additionally, the example method includes estimating the SNR and calculating the cost function based on the estimated SNR; The example method also includes numerically optimizing the DPD coefficients and updating the DPD coefficient set based on the numerical optimization.
Claims16
A method of Digital Pre-Distortion (DPD) performance optimization, the method comprising:
- choosing a DPD adaptation stimulus to facilitate frequency domain signal-to-noise (SNR) estimation, wherein the DPD adaptation stimulus is a Multi Tone Power Ratio (MTPR) signal;
- initializing DPD coefficients based on setting the DPD coefficients to an initial value;
- estimating the SNR over at least two frequencies;
- calculating a cost function based on the estimated SNR;
- numerically optimizing the DPD coefficients based on the cost function, wherein the cost function is further based on channel capacity;
- and
- updating the DPD coefficient set based on the numerical optimization.
A method of Digital Pre-Distortion (DPD) performance optimization, the method comprising:
- choosing a DPD adaptation stimulus to facilitate frequency domain signal-to-noise (SNR) estimation;
- initializing DPD coefficients based on setting the DPD coefficients to an initial value;
- estimating the SNR over at least two frequencies;
- calculating a cost function based on the estimated SNR;
- numerically optimizing the DPD coefficients based on the cost function;
- and
- updating the DPD coefficient set based on the numerical optimization, wherein the cost function is further based on channel capacity.
Dependencies are inferred from the claim text.