SUMMER INTERNSHIP - Spectrum Sharing Simulation Intern

CableLabs • Louisville, CO

25d • $32 - $42 • Onsite

About The Position

At CableLabs we wake up every day to invent the future. CableLabs is a global, award-winning innovation and R&D lab dedicated to keeping people connected by building and orchestrating emergent technology and igniting co-innovation today for the broadband of tomorrow.
The Spectrum Sharing Simulation Intern position resides in the Wireless Technologies department at CableLabs. This department conducts research and development in new and emerging wireless technologies that include 5G, 6G, Wi-Fi, and spectrum-sharing strategies. Our team plays a crucial role in developing industry standards and technical regulatory policy for mobile and Wi-Fi network design, deployment, service delivery, and operations in licensed and unlicensed spectrum.
Why This Internship Is Exciting
The Wireless Technologies group at CableLabs is seeking candidates for a summer intern position. In this role, you will be involved in spectrum-sharing studies and interacting with operators, regulations, and standard bodies. The project will likely make direct impacts on industry as well as generate papers with solid contributions. The internship could be extended after the summer depending on mutual interests.
What You’ll Do
With regulators globally exploring spectrum sharing between cellular (5G/6G) and Wi-Fi networks (802.11ax, be, and bn), coexistence research has become a critical field requiring sophisticated modeling and analysis. In this role, you will participate in the development of a high-fidelity, link-level simulation framework using NS-3.
The intern will assist the team to design and generate simulations and use results to provide recommendations on coexistence strategies and solutions.
The intern will also assist in support activities that include:
Develop and extend a link-level simulation framework to analyze cellular and Wi-Fi coexistence in shared spectrum bands.
Implement PHY-layer models for cellular (e.g., LTE/5G/6G) and Wi-Fi (e.g., 802.11ax/be/bn), including modulation, coding, and waveform characteristics.
Incorporate realistic channel models, including path loss, shadowing, fading, and interference coupling between cellular and Wi-Fi links.
Compare the NS-3 link-level simulation with an in-house designed system-level Monte Carlo simulation to evaluate statistical performance under randomized network topologies and traffic conditions.
Validate simulation results against standards specifications (3GPP, IEEE 802.11) and available measurement or reference data.
Visualize and interpret simulation results using plots and summary statistics.
Document simulation assumptions, methodologies, and findings in technical reports, papers, or presentations.
Collaborate with senior engineers/researchers to refine models and explore new coexistence techniques

Requirements

• Currently pursuing a Ph.D. Degree in Electrical Engineering, Computer Science, or a similar field with an emphasis on Telecommunications.
• Comprehensive knowledge of wireless communications, radio propagation channels, antenna, MIMO, and key physical layer and MAC layer techniques.
• Hands-on experience with simulation tools such as Python, or C/C++, and Matlab.

Nice To Haves

• Senior Ph.D. student is preferred.
• Knowledge of regulatory spectrum policy and standard bodies spectrum-related requirements.
• Knowledge of 5G NR, 802.11, or satellite communication system physical layer design.
• Knowledge of terrain and clutter path loss models.
• Experience using link-level simulation tools like NS-3 is preferred.
• Excellent analytical skills and critical thinking skills.
• Good communication and interpersonal skills.
• Self-motivated and willingness to learn.

Responsibilities

• Develop and extend a link-level simulation framework to analyze cellular and Wi-Fi coexistence in shared spectrum bands.
• Implement PHY-layer models for cellular (e.g., LTE/5G/6G) and Wi-Fi (e.g., 802.11ax/be/bn), including modulation, coding, and waveform characteristics.
• Incorporate realistic channel models, including path loss, shadowing, fading, and interference coupling between cellular and Wi-Fi links.
• Compare the NS-3 link-level simulation with an in-house designed system-level Monte Carlo simulation to evaluate statistical performance under randomized network topologies and traffic conditions.
• Validate simulation results against standards specifications (3GPP, IEEE 802.11) and available measurement or reference data.
• Visualize and interpret simulation results using plots and summary statistics.
• Document simulation assumptions, methodologies, and findings in technical reports, papers, or presentations.
• Collaborate with senior engineers/researchers to refine models and explore new coexistence techniques

What This Job Offers

• Career Level: Intern
• Education Level: Ph.D. or professional degree
• Number of Employees: 1,001-5,000 employees