Waveforms for xG Non-stationary Channels

TL;DR

This paper reviews waveform design techniques like HOGMT-Precoding and MEM modulations for interference cancellation in non-stationary wireless channels, addressing challenges posed by high mobility and time-varying multipath effects.

Contribution

It provides a comprehensive review of advanced waveform design methods tailored for non-stationary channels in next-generation wireless systems.

Findings

HOGMT-Precoding enhances interference cancellation in dynamic environments.

MEM modulations improve robustness against channel variability.

Discussion of practical implementation challenges and future research directions.

Abstract

Waveform design for interference cancellation in next-generation wireless systems, which includes precoding and modulation, aims to achieve orthogonality among data signals/symbols across all Degrees of Freedom (DoF). Conventional methods struggle with non-stationary channel states due to high mobility, density, and time-varying multipath propagation. In this article, we review the HOGMT-Precoding and MEM modulations for non-stationary channels. We also discuss practical challenges and future directions.