Projects
A hand-curated slice of work. What I'm actively investing in and what I'd want a colleague at a new lab to know about.
Upper Mid-Band (FR3) Massive MIMO
2023–Present
Leading the platform-side effort on a next-gen 256-TRX massive MIMO platform for the upper mid-band (FR3), where 6G is most likely to live.
- FR3 / Upper Mid-band
- 256-TRX
- eXtreme-MIMO
- Reciprocity Calibration
GPU-Based AI-RAN
2017–Present
A through-line in my work since 2017: running RAN workloads on commodity GPUs. Started with LDPC decoding for vRAN, now driving AI-RAN testbed development on a cuBB DU with a proprietary MIMO RU.
- GPU / CUDA
- AI-RAN
- O-RAN
- cuBB
- LDPC
- vRAN
AI DPD for High-Efficiency PAs
2024–Present
AI-based digital predistortion paired with envelope-tracking power amplifier architectures to push the energy efficiency of commercial radio units.
- Digital Predistortion
- Envelope Tracking
- AI / NN
- High-Efficiency PA
XDD: Cross Division Duplex
2020–Present
Sub-band full duplex for 5G-Advanced and 6G. Extend uplink coverage in TDD by squeezing UL onto a sub-band of the DL slot, and cancel the self-interference that creates.
- Sub-band Full Duplex
- 5G-Advanced
- SIC
- TDD
MIMO Self-Interference Cancellation
2022–Present
Equalizer-based digital self-interference cancellation for MIMO and hybrid MIMO transmitters. The technical body that makes XDD and hybrid-array linearity practical.
- SIC
- MIMO
- Equalizer DSIC
- Hybrid MIMO
AI-based Virtual DPD for MIMO
2019–2022
Neural-network digital predistorters trained against a model of the power amplifier instead of the real thing, so DPD becomes a software problem that scales to massive MIMO.
- Digital Predistortion
- Neural Networks
- Massive MIMO
- GPU
CBRS & Dynamic Spectrum Sharing
2017–2021
Reinforcement-learning-aided spectrum sharing in the CBRS band. Use-or-share frameworks, channel selection for unlicensed LTE, and the measurement scaffolding behind them.
- CBRS
- Reinforcement Learning
- Unlicensed LTE
- Spectrum Access
Sub-band DPD
2014–2018
Rice-era research on low-complexity, sub-band digital predistortion for noncontiguous transmissions. When the spectrum is fragmented, don't linearize the whole band.
- Digital Predistortion
- GNU Radio
- WARP
- SDR