Next Generation Advanced Transceiver Technologies for 6G and Beyond

TL;DR

This paper reviews the evolution and recent advances in next-generation advanced transceiver technologies for 6G, focusing on new models, innovative designs, and semantic-aware approaches to meet future wireless performance demands.

Contribution

It provides a comprehensive overview of NGAT evolution from conventional to near-field models, introduces new transceiver technologies, and discusses semantic-aware designs for 6G and beyond.

Findings

Shift from far-field to near-field channel models.

Introduction of reconfigurable intelligent surfaces and holographic MIMO.

Discussion of semantic-aware transceiver design metrics.

Abstract

To accommodate new applications such as extended reality, fully autonomous vehicular networks and the metaverse, next generation wireless networks are going to be subject to much more stringent performance requirements than the fifth-generation (5G) in terms of data rates, reliability, latency, and connectivity. It is thus necessary to develop next generation advanced transceiver (NGAT) technologies for efficient signal transmission and reception. In this tutorial, we explore the evolution of NGAT from three different perspectives. Specifically, we first provide an overview of new-field NGAT technology, which shifts from conventional far-field channel models to new near-field channel models. Then, three new-form NGAT technologies and their design challenges are presented, including reconfigurable intelligent surfaces, flexible antennas, and holographic multi-input multi-output (MIMO) systems. Subsequently, we discuss recent advances in semantic-aware NGAT technologies, which can utilize new metrics for advanced transceiver designs. Finally, we point out other promising transceiver technologies for future research.