Core Concepts
The author explores the evolution of wireless communications through multiple access technologies over the past 50 years, emphasizing the significance of non-orthogonal multiple access (NOMA) in shaping modern connectivity.
Abstract
The content delves into the historical development and key concepts of multiple access (MA) technologies, focusing on power-domain NOMA, spatial domain MA, and integrated sensing and communications (ISAC) systems. It highlights the evolution towards next-generation multiple access (NGMA) for future wireless networks.
The tutorial review covers foundational principles, information-theoretic limits, and major advancements in MA techniques like SPC and SIC decoding. It discusses the application of NOMA to various scenarios and its integration with emerging technologies in wireless networks.
Key topics include orthogonal and non-orthogonal transmission strategies, MA transmission schemes, capacity regions of MACs and BCs, as well as the concept of degraded BCs. The content also touches on practical applications of SPC and SIC decoding in real-world communication systems.
Stats
"Next-generation 6G wireless networks are envisioned to meet more stringent requirements than their predecessors."
"Peak data rates on the order of terabits per second are expected for next-generation wireless networks."
"NOMA has emerged as a focal point of research over the past decade."
Quotes
"The evolution of wireless communications has been significantly influenced by remarkable advancements in multiple access (MA) technologies over the past five decades." - Yuanwei Liu et al.
"SPC involves encoding a message for a user experiencing suboptimal channel conditions at a lower rate and subsequently 'superimposing' the signal of a user with superior channel conditions." - Content