103 citations · 419 across the 75 of their papers we have counts for
14 papers · 1 filter
Integrated Sensing and Communication for Large Networks using Joint Detection and a Dynamic Transmission Strategy
Konpal Shaukat Ali, Marwa Chafii
A large network employing integrated sensing and communication (ISAC) where a single transmit signal by the base station (BS) serves both the radar and communication modes is studi…
RIS-Enabled Passive Radar towards Target Localization
Ahmad Bazzi, Marwa Chafii
In this paper, we study a communication-centric integrated sensing and communication (ISAC) approach, where an access point (AP) communicates with users, while a passive radar (PR)…
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…
On Integrated Sensing and Communication Waveforms with Tunable PAPR
Ahmad Bazzi, Marwa Chafii
We present a novel approach to the problem of dual-functional radar and communication (DFRC) waveform design with adjustable peak-to-average power ratio (PAPR), while minimizing th…
Deep Neural Network Augmented Wireless Channel Estimation for Preamble-based OFDM PHY on Zynq System on Chip
Syed Asrar ul haq, Abdul Karim Gizzini, Shakti Shrey +3
Reliable and fast channel estimation is crucial for next-generation wireless networks supporting a wide range of vehicular and low-latency services. Recently, deep learning (DL) ba…
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…
On Outage-based Beamforming Design for Dual-Functional Radar-Communication 6G Systems
Ahmad Bazzi, Marwa Chafii
This article studies and derives beamforming design in a dual-functional radar-communication (DFRC) multiple-input-multiple-output system. We focus on a scenario, where the DFRC ba…
Twelve Scientific Challenges for 6G: Rethinking the Foundations of Communications Theory
Marwa Chafii, Lina Bariah, Sami Muhaidat +1
The research in the sixth generation of communication networks needs to tackle new challenges in order to meet the requirements of emerging applications in terms of high data rate,…
A Survey on Deep Learning based Channel Estimation in Doubly Dispersive Environments
Abdul Karim Gizzini, Marwa Chafii
Wireless communications systems are impacted by multi-path fading and Doppler shift in dynamic environments, where the channel becomes doubly-dispersive and its estimation becomes…
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…
Federated Distillation based Indoor Localization for IoT Networks
Yaya Etiabi, Marwa Chafii, El Mehdi Amhoud
Federated distillation (FD) paradigm has been recently proposed as a promising alternative to federated learning (FL) especially in wireless sensor networks with limited communicat…
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…
A Novel Approach for Cancellation of Non-Aligned Inter Spreading Factor Interference in LoRa Systems
Qiaohan Zhang, Ivo Bizon, Atul Kumar +3
Long Range (LoRa) has become a key enabler technology for low power wide area networks. However, due to its ALOHA-based medium access scheme, LoRa has to cope with collisions that…
Bounds on Power and Common Message Fractions for RSMA with Imperfect SIC
Garima Chopra, Akhileswar Chowdary, Abhinav Kumar +1
Rate-Splitting multiple access (RSMA) has emerged as a key enabler in improving the performance of the beyond fifth-generation (5G) cellular networks. The existing literature has t…