103 citations · 122 across the 9 of their papers we have counts for
11 papers
Sensing-Assisted OFDM with Index Modulation: A Waveform for Optical Wireless Integrated Communication and Localisation
Ali Waqar Azim, Mohamed Sufyan Islim, Muhammad Ali Imran +1
This paper proposes sensing-assisted OFDM with index modulation (SA-OFDM-IM) for joint communication and localisation over optical wireless systems. In SA-OFDM-IM, a multilayer fre…
A Framework for Geometry-based Statistical Channel Modeling in ISAC Systems
Ali Waqar Azim, Ahmad Bazzi, Theodore S. Rappaport +1
This paper proposes a comprehensive framework for a {geometry-based statistical model for} integrated sensing and communication (ISAC) tailored for bistatic systems. Our dual-compo…
3GPP-Compliant Radar Cross Section Characterization of Indoor Factory Targets
Ali Waqar Azim, Ahmad Bazzi, Roberto Bomfin +1
The following paper presents a systematic 3rd Generation Partnership Project (3GPP)-compliant characterization of radar cross section (RCS) for indoor factory (InF) objects, includ…
Statistical and Deterministic RCS Characterization for ISAC Channel Modeling
Ali Waqar Azim, Ahmad Bazzi, Roberto Bomfin +3
In this study, we perform a statistical analysis of the radar cross section (RCS) for various test targets in an indoor factory at \(25\)-\(28\) GHz, with the goal of formulating p…
Indoor Statistical and Deterministic RCS Characterization for ISAC Channel Modeling
Ali Waqar Azim, Ahmad Bazzi, Roberto Bomfin +3
In this study, we perform statistical radar cross section (RCS) analysis for various test targets in an indoor factory at \SI{25}{}-\SI{28}{\GHz}, with the goal of determining the…
Layered Chirp Spread Spectrum Modulations for LPWANs
Ali Waqar Azim, Ahmad Bazzi, Roberto Bomfin +2
This article examines two chirp spread spectrum techniques specifically devised for low-power wide-area networks (LPWANs) to optimize energy and spectral efficiency (SE). These met…
A Unified Deep Transfer Learning Model for Accurate IoT Localization in Diverse Environments
Abdullahi Isa Ahmed, Yaya Etiabi, Ali Waqar Azim +1
Internet of Things (IoT) is an ever-evolving technological paradigm that is reshaping industries and societies globally. Real-time data collection, analysis, and decision-making fa…
Dual-Mode Time Domain Multiplexed Chirp Spread Spectrum
Ali Waqar Azim, Ahmad Bazzi, Mahrukh Fatima +2
We propose a dual-mode (DM) time domain multiplexed (TDM) chirp spread spectrum (CSS) modulation for spectral and energy-efficient low-power wide-area networks (LPWANs). DM-CSS mod…
Chirp Spread Spectrum-based Waveform Design and Detection Mechanisms for LPWAN-based IoT -- A Survey
Ali Waqar Azim, Ahmad Bazzi, Raed Shubair +1
LoRa is a widely adopted method of utilizing chirp spread spectrum (CSS) techniques at the physical (PHY) layer to facilitate low-power wide-area network (LPWAN) connectivity. By t…
A Framework for Amalgamating Optical-OFDM and Optical-OFDM with Index Modulation for Optical Wireless Systems
Ali Waqar Azim, Yannis Le Guennec, Marwa Chafii +1
In this communication, we propose a framework for amalgamating optical-orthogonal frequency-division multiplexing (O-OFDM) and O-OFDM with index modulation (O-OFDM-IM) for optical…
Dual-Mode Chirp Spread Spectrum Modulation
Ali Waqar Azim, Ahmad Bazzi, Raed Shubair +1
In this letter, we propose dual-mode chirp spread spectrum (DM-CSS) modulation for low-power wide-area networks. DM-CSS is capable of achieving a higher spectral efficiency (SE) re…