394 citations · 511 across the 23 of their papers we have counts for
9 papers · 1 filter
Interference and noise cancellation for joint communication radar (JCR) system based on contextual information
Christantus O. Nnamani, Mathini Sellathurai
This paper examines the separation of wireless communication and radar signals, thereby guaranteeing cohabitation and acting as a panacea to spectrum sensing. First, considering th…
Machine Learning-based Urban Canyon Path Loss Prediction using 28 GHz Manhattan Measurements
Ankit Gupta, Jinfeng Du, Dmitry Chizhik +2
Large bandwidth at mm-wave is crucial for 5G and beyond but the high path loss (PL) requires highly accurate PL prediction for network planning and optimization. Statistical models…
Gridded UAV Swarm for Secrecy Rate Maximization with Unknown Eavesdropper
Christantus O. Nnamani, Muhammad R. A. Khandaker, Mathini Sellathurai
This paper considers grid formation of an unmanned aerial vehicle (UAV) swarm for maximizing the secrecy rate in the presence of an unknown eavesdropper. In particular, the UAV swa…
Reinforcement Learning based Per-antenna Discrete Power Control for Massive MIMO Systems
Navneet Garg, Mathini Sellathurai, Tharmalingam Ratnarajah
Power consumption is one of the major issues in massive MIMO (multiple input multiple output) systems, causing increased long-term operational cost and overheating issues. In this…
Joint Beamforming and Location Optimization for Secure Data Collection in Wireless Sensor Networks with UAV-Carried Intelligent Reflecting Surface
Christantus O. Nnamani, Muhammad R. A. Khandaker, Mathini Sellathurai
This paper considers unmanned aerial vehicle (UAV)-carried intelligent reflecting surface (IRS) for secure data collection in wireless sensor networks. An eavesdropper (Eve) lurks…
UAV-Aided Jamming for Secure Ground Communication with Unknown Eavesdropper Location
Christantus O. Nnamani, Muhammad R. A. Khandaker, Mathini Sellathurai
This paper investigates unmanned aerial vehicle (UAV)-aided jamming technique for enabling physical layer keyless security in scenarios where the exact eavesdropper location is unk…
Online Learning Models for Content Popularity Prediction In Wireless Edge Caching
Navneet Garg, Vimal Bhatia, B. N. Bharath +2
Caching popular contents in advance is an important technique to achieve the low latency requirement and to reduce the backhaul costs in future wireless communications. Considering…
Low-Complexity Hybrid Beamforming for Massive MIMO Systems in Frequency-Selective Channels
Sohail Payami, Mathini Sellathurai, Konstantinos Nikitopoulos
Hybrid beamforming for frequency-selective channels is a challenging problem as the phase shifters provide the same phase shift to all of the subcarriers. The existing approaches s…
Hybrid Beamforming with Reduced Number of Phase Shifters for Massive MIMO Systems
Sohail Payami, Mir Ghoraishi, Mehrdad Dianati +1
In this paper, two novel hybrid beamforming methods are proposed to reduce the cost and power consumption of hybrid beamformers with subconnected phase shifter network structure in…