systems
an archive of projects with this tag
Energy-Aware Camera Scheduling for Opportunistic 3D Mapping: Wearable devices operate under stringent energy constraints and cannot continuously capture video. This raises a fundamental systems question — given a limited sensing budget, when should a mobile device collect visual data to maximize the coverage and freshness of a continuously evolving 3D map? We address this with IndoorMapper, a budget-aware sensing framework for opportunistic 3D map maintenance that localizes users within an existing map, estimates the utility of potential observations, and dynamically allocates a user-specified sensing budget across a user’s trajectory. |
BLINC: A Fault-Tolerant Neural Codec for Wireless Real-time Video Streaming: Wireless real-time video applications such as AR/VR, drones, cloud gaming, and broadcast streaming cannot always wait for retransmissions when packets are dropped or corrupted. In this project, we seek to understand whether a video codec preserve visual quality when wireless links deliver partially corrupted packets rather than only clean packets or full packet losses. We address this with BLINC, a bit-loss-insensitive neural codec that combines segmented entropy encoding, segment-wise loss-aware fine-tuning, and Wi-Fi link-layer integration to enable graceful degradation under bit-level corruption while reducing retransmissions and wireless airtime. |
UNIX-like Operating System: Implemented several key parts of virtual memory system, network protocol stack, system call interfaces, and file system in C. |
| RISC-V Processor Optimized for Neural Network Inference: Built CPU with 4-stage pipeline, bypassing, and custom instruction set extensions for inference. Implemented loop unrolling and function inlining code optimizations. |