Ziming He

Title: Ziming He and His Patent in Digital Pre-Distortion

Introduction

Ziming He is an inventor associated with Barnet, Great Britain, and Samsung Electronics Ltd. His work includes a patent for a digital pre-distortion method designed to reduce the complexity of compensating for power-amplifier distortion.

Latest Patents

The provided information lists 1 patent for Ziming He: “Low Complexity Direct-to-LUT Digital Pre-Distortion Method.” The invention describes a power-amplifier distortion apparatus with pre-distortion circuitry using a memory-polynomial look-up-table (LUT) circuit and post-distortion circuitry that updates the pre-distortion circuitry based on the amplifier’s output.

The pre-distortion circuitry uses multiple LUTs, each corresponding to a different memory depth in a Volterra-series memory polynomial. Each LUT is indexed by the instantaneous power of an input sample delayed according to its memory depth. The circuit combines the LUT outputs with their corresponding delayed input samples, and provides the resulting pre-distorted signal to the power amplifier.

Career Highlights

He is associated with Samsung Electronics Ltd., a company active in electronics and technology. The patent reflects work on signal-processing techniques for power-amplifier systems.

Collaborations

The provided information names Paul Nicholas Fletcher and Donghan Kim as coworkers. It does not specify their roles in the patent or the extent of their collaboration with He.

Conclusion

Ziming He’s listed patent focuses on a LUT-based approach to power-amplifier pre-distortion, with the aim of reducing implementation complexity.