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cs.IT2025
Entropy-Based Evidence for Bitcoin's Discrete Time Mechanism
Bin Chen, Pan Feng
Bitcoin derives a verifiable temporal order from probabilistic block discovery and cumulative proof-of-work rather than from a trusted global clock. We show that block arrivals exh…
cs.IT2025
Age of Information Analysis for NOMA-Assisted Grant-Free Transmissions with Randomly Arrived Packets
Yanshi Sun, Yanglin Ye, Caihong Kai +2
This paper investigates the application of non-orthogonal multiple access (NOMA) to grant-free transmissions to reduce the age of information (AoI) in uplink status update systems,…