Patent ID: 9197258
Filing Date: 2015-11-24
Classification: H04B,H04L

Abstract:
1. A method, comprising: receiving a plurality of digital samples of a modulated baseband signal, wherein the modulated baseband signal comprises a plurality of digital amplitude samples and a plurality of digital phase samples, wherein the plurality of digital phase samples comprise digital samples of a combined baseband and carrier phase; determining time instances associated with predetermined phase crossings of the modulated baseband signal based on the plurality of digital phase samples; generating a data dependent clock signal having rising and falling edges associated with the determined time instances; interpolating the plurality of digital amplitude samples based on the determined time instances to generate a plurality of interpolated digital amplitude samples representing amplitude values corresponding to the predetermined phase crossings of the combined baseband and carrier phase; providing the plurality of interpolated digital amplitude samples to a digital to analog converter; and clocking the digital to analog converter using the generated data dependent clock signal, wherein a square wave output signal from the digital to analog converter comprises transition times associated with the generated data dependent clock signal modulating a magnitude of the square wave based on the plurality of interpolated digital amplitude samples.