AUTHOR=Gaspar Danilo , Mendes Luciano L. , Pimenta Tales C. TITLE=A review on principles, performance and complexity of linear estimation and detection techniques for MIMO systems JOURNAL=Frontiers in Communications and Networks VOLUME=4 YEAR=2023 URL=https://www.frontiersin.org/journals/communications-and-networks/articles/10.3389/frcmn.2023.968370 DOI=10.3389/frcmn.2023.968370 ISSN=2673-530X ABSTRACT=

The advent of the fifth generation (5G) of mobile networks has introduced several new use cases that are pushing mobile networks in environments that are typically supported by wired technologies. The initial discussions around the sixth generation (6G) of mobile networks signalizes that different approaches are needed to address all contrasting requirements, where multiple-input multiple-output (MIMO) technique stands as a key technology for most future wireless systems. In this review, we present an introduction on classical linear estimators and coherent detectors along with an innovative and accurate complexity formulation within a common framework, allowing a fair comparison and providing an initial guideline for researchers that are looking for a general view of the main techniques available for spatial multiplexing (SM)-MIMO detection and estimation.