86 citations · 222 across the 33 of their papers we have counts for
15 papers · 1 filter
Predictive Closed-Loop Service Automation in O-RAN based Network Slicing
Joseph Thaliath, Solmaz Niknam, Sukhdeep Singh +7
Network slicing provides introduces customized and agile network deployment for managing different service types for various verticals under the same infrastructure. To cater to th…
AoI-minimizing Scheduling in UAV-relayed IoT Networks
Biplav Choudhury, Vijay K. Shah, Aidin Ferdowsi +2
Due to flexibility, autonomy and low operational cost, unmanned aerial vehicles (UAVs), as fixed aerial base stations, are increasingly being used as \textit{relays} to collect tim…
Deep Learning for Fast and Reliable Initial Access in AI-Driven 6G mmWave Networks
Tarun S. Cousik, Vijay K. Shah, Tugba Erpek +2
We present DeepIA, a deep neural network (DNN) framework for enabling fast and reliable initial access for AI-driven beyond 5G and 6G millimeter (mmWave) networks. DeepIA reduces t…
Joint Age of Information and Self Risk Assessment for Safer 802.11p based V2V Networks
Biplav Choudhury, Vijay K. Shah, Avik Dayal +1
Emerging 802.11p vehicle-to-vehicle (V2V) networks rely on periodic Basic Safety Messages (BSMs) to disseminate time-sensitive safety-critical information, such as vehicle position…
Survey of Spectrum Regulation for Intelligent Transportation Systems
Junsung Choi, Vuk Marojevic, Carl B. Dietrich +2
As 5G communication technology develops, vehicular communications that require high reliability, low latency, and massive connectivity are drawing increasing interest from those in…
Underlay Radar-Massive MIMO Spectrum Sharing: Modeling Fundamentals and Performance Analysis
Raghunandan M. Rao, Harpreet S. Dhillon, Vuk Marojevic +1
In this work, we study underlay radar-massive MIMO cellular coexistence in LoS/near-LoS channels, where both systems have 3D beamforming capabilities. Using mathematical tools from…
Probability of Pilot Interference in Pulsed Radar-Cellular Coexistence: Fundamental Insights on Demodulation and Limited CSI Feedback
Raghunandan M. Rao, Vuk Marojevic, Jeffrey H. Reed
This paper considers an underlay pulsed radar-cellular spectrum sharing scenario, where the cellular system uses pilot-aided demodulation, statistical channel state information (S-…
Analysis of Worst-Case Interference in Underlay Radar-Massive MIMO Spectrum Sharing Scenarios
Raghunandan M. Rao, Harpeet S. Dhillon, Vuk Marojevic +1
In this paper, we consider an underlay radar-massive MIMO spectrum sharing scenario in which massive MIMO base stations (BSs) are allowed to operate outside a circular exclusion zo…
Analysis of Non-Pilot Interference on Link Adaptation and Latency in Cellular Networks
Raghunandan M. Rao, Vuk Marojevic, Jeffrey H. Reed
Modern wireless systems such as the Long-Term Evolution (LTE) and 5G New Radio (5G NR) use pilot-aided SINR estimates to adapt the transmission mode and the modulation and coding s…
Rate-Maximizing OFDM Pilot Patterns for UAV Communications in Nonstationary A2G Channels
Raghunandan M. Rao, Vuk Marojevic, Jeffrey H. Reed
In this paper, we propose and evaluate rate-maximizing pilot configurations for Unmanned Aerial Vehicle (UAV) communications employing OFDM waveforms. OFDM relies on pilot symbols…
5G NR Jamming, Spoofing, and Sniffing: Threat Assessment and Mitigation
Marc Lichtman, Raghunandan M. Rao, Vuk Marojevic +2
In December 2017, the Third Generation Partnership Project (3GPP) released the first set of specifications for 5G New Radio (NR), which is currently the most widely accepted 5G cel…
Extending LTE into the Unlicensed Spectrum: Technical Analysis of the Proposed Variants
Mina Labib, Vuk Marojevic, Jeffrey H. Reed +1
The commercial success of the Long Term Evolution (LTE) and the resulting growth in mobile data demand have urged cellular network operators to strive for new innovations. LTE in u…
Adaptive Pilot Patterns for CA-OFDM Systems in Nonstationary Wireless Channels
Raghunandan M. Rao, Vuk Marojevic, Jeffrey H. Reed
In this paper, we investigate the performance gains of adapting pilot spacing and power for Carrier Aggregation (CA)-OFDM systems in nonstationary wireless channels. In current mul…
LTE PHY Layer Vulnerability Analysis and Testing Using Open-Source SDR Tools
Raghunandan M. Rao, Sean Ha, Vuk Marojevic +1
This paper provides a methodology to study the PHY layer vulnerability of wireless protocols in hostile radio environments. Our approach is based on testing the vulnerabilities of…
Performance Analysis of a Mission-Critical Portable LTE System in Targeted RF Interference
Vuk Marojevic, Raghunandan M. Rao, Sean Ha +1
Mission-critical wireless networks are being up-graded to 4G long-term evolution (LTE). As opposed to capacity, these networks require very high reliability and security as well as…