Patent ID: 9595983
Date: 2017-03-14
CPC Classifications: H03F,H04B

Claim:
1. A method for predistorting data transmissions in a digital data transmission system, comprising the steps of: generating an ideal data symbol sequence and digitally modulating said ideal data symbol sequence prior to digital-to-analog conversion; permitting said digital data transmission system to reach steady-state operation; upconverting said ideal data symbol sequence and sampling all upconverted ideal data symbol sequences prior to power amplification so as to produce a sampled data sequence; aligning a received sampled data sequence in time with said ideal data symbol sequence; determining a mean error between said ideal data symbol sequence and a corresponding upconverter-effected data symbol sequence; generating weighted coefficients which minimize said mean error; and applying said weighted coefficients to a step of pre-distortion filtering so as to pre-distort said data transmissions.