125 citations · 234 across the 21 of their papers we have counts for
7 papers · 1 filter
OTFS-IM-Assisted Non-Terrestrial Networks Relying on Autoencoder-Aided Soft-Decision Detection
Xinyu Feng, Chao Zhang, Mohammed EL-Hajjar +2
Orthogonal Time Frequency Space ({OTFS}) modulation offers significant advantages over Orthogonal Frequency Division Multiplexing ({OFDM}), particularly in high speed environments.…
Amalgamated CHIRP and OFDM for ISAC
Pankaj Kumar, Mohammed El-Hajjar, Ibrahim A. Hemadeh +4
Integrated Sensing and Communication (ISAC) requires the development of a waveform capable of efficiently supporting both communication and sensing functionalities. This paper prop…
Augmented Affine Frequency Division Multiplexing for Both Low PAPR Signaling and Diversity Gain Protection
Zhou Lu, Mohammed El-Hajjar, Lie-liang Yang
Research results on Affine Frequency Division Multiplexing (AFDM) reveal that it experiences the same Peak-to-Average Power Ratio (PAPR) problem as conventional Orthogonal Frequenc…
Graph Neural Network Aided Detection for the Multi-User Multi-Dimensional Index Modulated Uplink
Xinyu Feng, Mohammed EL-Hajjar, Chao Xu +1
The concept of Compressed Sensing-aided Space-Frequency Index Modulation (CS-SFIM) is conceived for the Large-Scale Multi-User Multiple-Input Multiple-Output Uplink (LS-MU-MIMO-UL)…
Localization in Reconfigurable Intelligent Surface Aided mmWave Systems: A Multiple Measurement Vector Based Channel Estimation Method
Kunlun Li, Jiguang He, Mohammed El-Hajjar +1
The sparsity of millimeter wave (mmWave) channels in the angular and temporal domains is beneficial to channel estimation, while the associated channel parameters can be utilized f…
Analogue Radio over Fiber aided Multi-service Communications for High Speed Trains
Yichuan Li, Salman Ghafoor, Mohammed El-Hajjar
High speed trains (HST) have gradually become an essential means of transportation, where given our digital world, it is expected that passengers will be connected all the time. Mo…
Analogue Radio Over Fiber for Next-Generation RAN: Challenges and Opportunities
Yichuan Li, Qijie Xie, Mohammed El-Hajjar +1
The radio access network (RAN) connects the users to the core networks, where typically digitised radio over fiber (D-RoF) links are employed. The data rate of the RAN is limited b…