https://marcusc.me/tags/lora/ Recent content in LoRa on Marcus Cheng Hugo -- gohugo.io en © 2026 Marcus Cheng Wed, 01 Apr 2026 00:00:00 +0000 https://marcusc.me/projects/dce/ Wed, 01 Apr 2026 00:00:00 +0000 https://marcusc.me/projects/dce/ <h2 class="relative group">Introduction <div id="introduction" class="anchor"></div> </h2> <p><a href="https://www.linkedin.com/in/connor-froese/" target="_blank" rel="noreferrer">Connor Froese</a>, <a href="https://www.linkedin.com/in/hassan-haider-zaidi/" target="_blank" rel="noreferrer">Hassan Haider</a>, <a href="https://www.linkedin.com/in/seoobrandon/" target="_blank" rel="noreferrer">Brandon Seo</a>, <a href="https://www.linkedin.com/in/douglas-zhu-518a3a268/" target="_blank" rel="noreferrer">Douglas Zhu</a>, and I designed, built, and tested a Dynamic Channel Emulator (DCE) for the <a href="https://radio.ece.ubc.ca/" target="_blank" rel="noreferrer">UBC Radio Science Laboratory (RSL)</a> as our ELEC 491 capstone project. Prof. David Michelson was our client and advisor.</p> <p>In plain terms, the DCE is a ground-based testbed that emulates what a radio signal goes through on its way to and from a satellite in low Earth orbit (LEO): Doppler shift, free-space path loss, and propagation delay. This lets CubeSat developers test their radio links, over the air, before they ever ship hardware to a launch pad.</p>