Heejin Roh
Principal Engineer at Samsung Electronics, MSL
San Diego, California, United States
Summary
👤
Senior🎓
Top SchoolHeejin Roh is a Principal Engineer with a Ph.D. in wireless communications and over nine years designing physical-layer baseband receivers and algorithms for LTE/LTE-A, EV-DO, and mobile broadcasting systems at Samsung. He specializes in OFDM/CDMA receiver architectures, synchronization, digital PLLs, and RF impairment compensation, with deep experience translating algorithms into optimized L1 software for lab and field modem chipsets. His work spans practical features like AGC, cell search, handover, and idle DRX power saving, and includes patented innovations in modem signal processing. Beyond cellular, he has contributed to the popular Samsung TizenRT IoT RTOS by integrating IoTivity components, reflecting a hands-on embedded systems capability alongside his research pedigree. Based in San Diego, he combines rigorous estimation-and-detection theory with pragmatic engineering to deliver production-ready baseband solutions.
9 years of coding experience
8 years of employment as a software developer
Ph.D., Wireless communications, Ph.D., Wireless communications at Pohang University of Science and Technology
Github Skills (7)
c1710
iot10
embedded10
tizen10
c1110
sys10
networking9
Programming languages (1)
Github contributions (3)
Samsung/TizenRT
Apr 2017 - Jan 2018
TizenRT is a lightweight RTOS-based platform to support low-end IoT devices
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:35 commits, 50 PRs, 1 push in 9 months
Contributions summary:Heejin contributed to the `samsung/tizenrt` repository, which focuses on a lightweight RTOS for IoT devices. Their commits primarily involve integrating the iotivity library (a framework for IoT device communication). They added and updated build configurations to include this library, indicating a focus on building and integrating software components for the TizenRT platform, likely for specific IoT device applications. These changes suggest they were involved in adding sample applications demonstrating iotivity functionalities, like a simple server.
iot-devicesmqttrtosembeddedfreertos
heejin-kim/TizenRT
Jun 2017 - Jun 2017
Contributions:29 pushes, 5 branches in 24 days
iot-devicesmqttrtostizeniot
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.