Chaitanya Amballa
PhD Student, ECE · University of Illinois Urbana–Champaign
SiNRG · advised by Prof. Romit Roy Choudhury
amballa2@illinois.edu
My research lies at the intersection of generative modeling, signal processing, and learning for spatial inference. More recently, I am interested in diffusion models for inverse problems. I also received an MS degree in ECE from UIUC. In a previous life, I have worked on reinforcement learning, bandits, and wireless networks, as a researcher at TCS Research under Dr. Sanjay Bhat. I received my B.Tech. in Electrical Engineering from IIT Tirupati, advised by Prof. K. P. Naveen.
News
- Jan 2026CoGuide accepted to ICLR 2026
- Sep 2025EchoNeRF accepted to NeurIPS 2025
- May 2025Joined Amazon as an Applied Scientist Intern
- May 2025Graduated with an M.S. in ECE from UIUC
- Apr 2025Received Qualcomm Graduate Award
Publications (*=equal contribution, =highlights)
We reconstruct indoor floorplans from sparse user trajectories by steering a diffusion prior with a (surrogate) likelihood score from a contrastive trajectory–layout embedding space.
We adapt NeRFs to learn from multipath RF/audio signals to infer indoor structure without cameras, enabling floorplan reconstruction and forward tasks like signal prediction.
