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Oxford Mathematics Lectures: “Networks (Renaud Lambiotte)”, “Riemannian Geometry (Jason Lotay)”
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This is a good lecture on network science (YouTube playlist) by Renaud Lambiotte from Oxford Mathematics (YouTube Channel).
A Gentle Introduction to Distributed Link Scheduling in Self-organizing Wireless Networks: Part I
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Author: Zhongyuan Zhao
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Military and Amateur HF Radios – the Basics
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Since the escalation of the Russo-Ukrainian War on Feb. 24, 2022, the high frequency (HF) radio has made headlines and sparked some discussions in the amateur radio community. With low bandwidth (2.5kHz-10kHz per HF channel), HF radio can only be used for digital or analog voice and E-mail/chat/text messaging. However, if the Internet, satellites, and telecom networks were all blocked in a war or natural disaster, HF radio is the only way of long distance communications without relying on any infrastructure.