Wireless Systems

Wireless networks continue to evolve toward greater scale, heterogeneity, and integration of communication, computation, and sensing. Our research develops analytical models and algorithms to understand how system architecture, spectrum resources, interference, and user demand jointly determine network capacity and performance, and to use these insights to guide the design and operation of future wireless networks.

Cellular and Advanced Wireless Networks

We study the performance and design of cellular and other advanced wireless networks, with an emphasis on resource allocation, interference management, and the scaling of network capacity. Our work has considered problems ranging from scheduling and medium-access control to network densification and the use of additional spectrum and infrastructure.

Current directions include understanding the interaction between spectrum and infrastructure resources and designing protocols for mass handoffs due to spectrum disruptions. We are also interested in systems that combine communication with other network functions, including integrated sensing and communication (ISAC), connected-vehicle networks, and learning and control at the wireless edge.

Selected Work

J. Huang, V. Subramanian, R. Agrawal, and R. Berry, "Downlink Scheduling and Resource Allocation for OFDM Systems," IEEE Transactions on Wireless Communications, vol. 8, no. 1, pp. 288-296, Jan. 2009.

K. Mu, Z. Xie, I. Kadota, and R. Berry, “Analysis and Optimization of 5G Random Access for Massive Handover with Spectrum Sharing,” DySPAN 2026, Washington, DC, 2026, pp. 1-10.

Satellite and Non-Terrestrial Networks

Large low-Earth-orbit (LEO) satellite constellations are creating wireless networks at unprecedented geographic and spatial scales. We study fundamental questions about how the capacity of these systems scales with the number of satellites, users, spectrum resources, and ground infrastructure.

Our work examines how orbital geometry, interference, frequency reuse, and satellite and gateway resources determine achievable network performance. More broadly, we are interested in understanding the architectural tradeoffs that arise when terrestrial and non-terrestrial networks are increasingly integrated.

Selected Work

C. Ozturk, D. Guo, R. Berry, and M. Honig, “Downlink Spectral Efficiency of LEO Satellite Constellations,” ISIT 2025, Ann Arbor, MI, 2025, pp. 1-6.