Communication Efficiency: Superposition Strategies and Early Decoding

Wireless communication is increasingly used in applications ranging from industrial control to large-scale battery-powered IoT networks. These systems impose stringent requirements on latency, reliability, and energy consumption that challenge conventional communication design. This work investigates, from an information-theoretic perspective, communication techniques for meeting these requirements, with particular emphasis on heterogeneous reliability constraints across users and applications. First, the performance of non-orthogonal multiple access through superposition coding is characterized under short-latency constraints. Although superposition coding is capacity-achieving for broadcast channels, practical implementations have not delivered the gains predicted by theory. This work analyzes its achievable performance under both common and unequal reliability requirements, providing insight into its relative underperformance and extending the analysis to layered reliability requirements for a single receiver. Second, this work studies communication strategies for energy-constrained devices, where frequent feedback may be impractical. In such settings, devices may tolerate reduced reliability or partial message recovery in order to preserve essential functionality. After characterizing this problem, two schemes that enable this tradeoff are proposed and compared.

Author dc:creator

• Paul Sheldon (24399707)

• Finite Blocklength Information Theory
• Short Blocklength Communications
• Early Decoding

Statement dc:rights

• In Copyright

DOI dc:identifier

https://doi.org/10.25417/uic.32994191.v1

OAI identifier oai:identifier

oai:figshare.com:article/32994191