82 citations · 127 across the 15 of their papers we have counts for
16 papers
Affine Frequency Division Multiplexing: From Communication to Sensing
Ali Bemani, Nassar Ksairi, Marios Kountouris
Affine Frequency Division Multiplexing (AFDM) has been proposed as an effective waveform for achieving the full diversity of doubly-dispersive (delay-Doppler) channels. While this…
Models, Methods and Waveforms for Estimation and Prediction of Doubly Sparse Time-Varying Channels
Wissal Benzine, Ali Bemani, Nassar Ksairi +1
This paper investigates channel estimation for linear time-varying (LTV) wireless channels under double sparsity, i.e., sparsity in both the delay and Doppler domains. An on-grid a…
Affine Frequency Division Multiplexing for Compressed Sensing of Time-Varying Channels
Wissal Benzine, Ali Bemani, Nassar Ksairi +1
This paper addresses compressed sensing of linear time-varying (LTV) wireless propagation links under the assumption of double sparsity i.e., sparsity in both the delay and Doppler…
Integrated Sensing and Communications with Affine Frequency Division Multiplexing
Ali Bemani, Nassar Ksairi, Marios Kountouris
Integrated sensing and communications (ISAC) is regarded as a key technology in next-generation (6G) mobile communication systems. Affine frequency division multiplexing (AFDM) is…
Affine Frequency Division Multiplexing For Communications on Sparse Time-Varying Channels
Wissal Benzine, Ali Bemani, Nassar Ksairi +1
This paper addresses channel estimation for linear time-varying (LTV) wireless propagation links under the assumption of double sparsity i.e., sparsity in both the delay and the Do…
On the Joint Estimation of Phase Noise and Time-Varying Channels for OFDM under High-Mobility Conditions
Francesco Linsalata, Nassar Ksairi
The combination of the effects of Doppler frequency shifts (due to mobility) and phase noise (due to the imperfections of oscillators operating at a high carrier frequency) poses s…
Affine Frequency Division Multiplexing for Next Generation Wireless Communications
Ali Bemani, Nassar Ksairi, Marios Kountouris
Affine Frequency Division Multiplexing (AFDM), a new chirp-based multicarrier waveform for high mobility communications, is introduced here. AFDM is based on discrete affine Fourie…
Low complexity equalization for AFDM in doubly dispersive channels
Ali Bemani, Nassar Ksairi, Marios Kountouris
Affine Frequency Division Multiplexing (AFDM), which is based on discrete affine Fourier transform (DAFT), has recently been proposed for reliable communication in high-mobility sc…
AFDM: A Full Diversity Next Generation Waveform for High Mobility Communications
Ali Bemani, Nassar Ksairi, Marios Kountouris
We present Affine Frequency Division Multiplexing (AFDM), a new chirp-based multicarrier transceiver scheme for high mobility communications in next-generation wireless systems. AF…
Performance Analysis of Multi-Service Oriented Multiple Access Under General Channel Correlation
Nassar Ksairi, Mérouane Debbah
In this article, we provide both analytical and numerical performance analysis of multi-service oriented multiple access (MOMA), a recently proposed non-orthogonal multiple-access…
A Multi-Service Oriented Multiple-Access Scheme For M2M Support in Future LTE
Nassar Ksairi, Stefano Tomasin, Mérouane Debbah
We propose a novel multiple-access technique to overcome the shortcomings of the current proposals for the future releases of Long-Term Evolution (LTE). We provide a unified radio…
Pilot Pattern Adaptation for 5G MU-MIMO Wireless Communications
Nassar Ksairi, Beatrice Tomasi, Stefano Tomasin
To meet the goal of ten-fold increase in spectral efficiency, multiuser multiple-input-multiple-output (MU-MIMO) techniques capable of achieving high spatial multiplexing gains are…
A Multi-Service Oriented Multiple-Access Scheme for Next-Generation Mobile Networks
Nassar Ksairi, Stefano Tomasin, Mérouane Debbah
One of the key requirements for fifth-generation (5G) cellular networks is their ability to handle densely connected devices with different quality of service (QoS) requirements. I…
Nearly Optimal Resource Allocation for Downlink OFDMA in 2-D Cellular Networks
Nassar Ksairi, Pascal Bianchi, Philippe Ciblat
In this paper, we propose a resource allocation algorithm for the downlink of sectorized two-dimensional (2-D) OFDMA cellular networks assuming statistical Channel State Informatio…
Performance Analysis over Slow Fading Channels of a Half-Duplex Single-Relay Protocol: Decode or Quantize and Forward
Nassar Ksairi, Philippe Ciblat, Pascal Bianchi +1
In this work, a new static relaying protocol is introduced for half duplex single-relay networks, and its performance is studied in the context of communications over slow fading w…
Resource Allocation for Downlink Cellular OFDMA Systems: Part II - Practical Algorithms and Optimal Reuse Factor
Nassar Ksairi, Pascal Bianchi, Phiippe ciblat +1
In a companion paper, we characterized the optimal resource allocation in terms of power control and subcarrier assignment, for a downlink sectorized OFDMA system. In our model, th…