Search Results for author: Sumit Roy

Found 11 papers, 3 papers with code

Static Background Removal in Vehicular Radar: Filtering in Azimuth-Elevation-Doppler Domain

no code implementations4 Jul 2023 Xiangyu Gao, Sumit Roy, Lyutianyang Zhang

Our proposed algorithm follows a three-step approach: a) preprocessing of back-scattered received radar signal for 4-dimensional (4D) point clouds generation, b) 3-dimensional (3D) radar ego-motion estimation, and c) notch filter-based background removal in the azimuth-elevation-Doppler domain.

Autonomous Driving Motion Estimation

Multi-Access Point Coordination for Next-Gen Wi-Fi Networks Aided by Deep Reinforcement Learning

no code implementations22 Jun 2022 Lyutianyang Zhang, Hao Yin, Sumit Roy, Liu Cao

Meanwhile, a deep reinforcement learning channel access (DLCA) protocol is developed to replace the binary exponential backoff mechanism in DCF to enhance the network throughput by enabling the coordination of APs.

Fairness Management +1

Efficient PHY Layer Abstraction under Imperfect Channel Estimation

no code implementations22 May 2022 Liu Cao, Lyutianyang Zhang, Sian Jin, Sumit Roy

As most existing work investigate the PHY layer abstraction under an assumption of perfect channel estimation, it may become unreliable if there exists channel estimation error in a real communication system.

Learning to Detect Open Carry and Concealed Object with 77GHz Radar

no code implementations31 Oct 2021 Xiangyu Gao, Hui Liu, Sumit Roy, Guanbin Xing, Ali Alansari, Youchen Luo

Detecting harmful carried objects plays a key role in intelligent surveillance systems and has widespread applications, for example, in airport security.

Perception Through 2D-MIMO FMCW Automotive Radar Under Adverse Weather

no code implementations4 Apr 2021 Xiangyu Gao, Sumit Roy, Guanbin Xing, Sian Jin

Millimeter-wave (mmWave) radars are being increasingly integrated in commercial vehicles to support new Adaptive Driver Assisted Systems (ADAS) features that require accurate location and Doppler velocity estimates of objects, independent of environmental conditions.

MIMO-SAR: A Hierarchical High-resolution Imaging Algorithm for mmWave FMCW Radar in Autonomous Driving

no code implementations22 Jan 2021 Xiangyu Gao, Sumit Roy, Guanbin Xing

Millimeter-wave radars are being increasingly integrated into commercial vehicles to support advanced driver-assistance system features.

Autonomous Driving Radar odometry

RAMP-CNN: A Novel Neural Network for Enhanced Automotive Radar Object Recognition

3 code implementations13 Nov 2020 Xiangyu Gao, Guanbin Xing, Sumit Roy, Hui Liu

Millimeter-wave radars are being increasingly integrated into commercial vehicles to support new advanced driver-assistance systems by enabling robust and high-performance object detection, localization, as well as recognition - a key component of new environmental perception.

object-detection Object Detection +1

Experiments with mmWave Automotive Radar Test-bed

1 code implementation29 Dec 2019 Xiangyu Gao, Guanbin Xing, Sumit Roy, Hui Liu

Millimeter-wave (mmW) radars are being increasingly integrated in commercial vehicles to support new Adaptive Driver Assisted Systems (ADAS) for its ability to provide high accuracy location, velocity, and angle estimates of objects, largely independent of environmental conditions.

Object Recognition

Absolving the SSINS of Precision Interferometric Radio Data: A New Technique for Mitigating Faint Radio Frequency Interference

2 code implementations3 Jun 2019 Michael J. Wilensky, Miguel F. Morales, Bryna J. Hazelton, Nichole Barry, Ruby Byrne, Sumit Roy

We introduce a new pipeline for analyzing and mitigating radio frequency interference (RFI), which we call Sky-Subtracted Incoherent Noise Spectra (SSINS).

Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics

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