240 citations · 2.2k across the 111 of their papers we have counts for
25 papers · 1 filter
Permutation Matrix Modulation
Rahmat Faddli Siregar, Nandana Rajatheva, Matti Latva-Aho
We propose a novel scheme that allows MIMO system to modulate a set of permutation matrices to send more information bits, extending our initial work on the topic. This system is c…
A Nonlinear Autoregressive Neural Network for Interference Prediction and Resource Allocation in URLLC Scenarios
Christian Padilla, Ramin Hashemi, Nurul Huda Mahmood +1
Ultra reliable low latency communications (URLLC) is a new service class introduced in 5G which is characterized by strict reliability and low latency requirements (1…
Self-energy recycling for low-power reliable networks: Half-duplex or Full-duplex?
Dian Echevarría Pérez, Onel L. Alcaraz López, Hirley Alves +1
Self-energy recycling (sER), which allows transmit energy re-utilization, has emerged as a viable option for improving the energy efficiency (EE) in low-power Internet of Things ne…
Deep Reinforcement Learning for Practical Phase Shift Optimization in RIS-aided MISO URLLC Systems
Ramin Hashemi, Samad Ali, Nurul Huda Mahmood +1
We study the joint active/passive beamforming and channel blocklength (CBL) allocation in a non-ideal reconfigurable intelligent surface (RIS)-aided ultra-reliable and low-latency…
LiDAR Aided Human Blockage Prediction for 6G
Dileepa Marasinghe, Nandana Rajatheva, Matti Latva-aho
Leveraging higher frequencies up to THz band paves the way towards a faster network in the next generation of wireless communications. However, such shorter wavelengths are suscept…
Distributed UAV-enabled zero-forcing cooperative jamming scheme for safeguarding future wireless networks
X. A. Flores Cabezas, D. P. Moya Osorio, M. Latva-aho
In this work, we investigate the impact of two cooperative unmanned aerial vehicle (UAV)-based jammers on the secrecy performance of a ground wireless network in the presence of an…
Weighted Secrecy Coverage Analysis and the Impact of Friendly Jamming over UAV-Enabled Networks
X. A. Flores Cabezas, D. P. Moya Osorio, M. Latva-aho
In 5G and beyond networks, Unmanned Aerial Vehicles (UAV) are an attractive solution to enhance the secrecy of a wireless systems by exploiting their predominant LOS links and spac…
Untrained DNN for Channel Estimation of RIS-Assisted Multi-User OFDM System with Hardware Impairments
Nipuni Ginige, K. B. Shashika Manosha, Nandana Rajatheva +1
Reconfigurable intelligent surface (RIS) is an emerging technology for improving performance in fifth-generation (5G) and beyond networks. Practically channel estimation of RIS-ass…
Dynamic RF Combining for Multi-Antenna Ambient Energy Harvesting
Onel Luis Alcaraz López, Bruno Clerckx, Matti Latva-aho
Ambient radio frequency (RF) energy harvesting (EH) technology is key to realize self-sustainable, always-on, low-power, massive Internet of Things networks. Typically, rigid (non-…
Graph Neural Network Based Access Point Selection for Cell-Free Massive MIMO Systems
Vismika Ranasinghe, Nandana Rajatheva, Matti Latva-aho
A graph neural network (GNN) based access point (AP) selection algorithm for cell-free massive multiple-input multiple-output (MIMO) systems is proposed. Two graphs, a homogeneous…
Deep Neural Network-Based Blind Multiple User Detection for Grant-free Multi-User Shared Access
Thushan Sivalingam, Samad Ali, Nurul Huda Mahmood +2
Multi-user shared access (MUSA) is introduced as advanced code domain non-orthogonal complex spreading sequences to support a massive number of machine-type communications (MTC) de…
Deep Learning-Based Active User Detection for Grant-free SCMA Systems
Thushan Sivalingam, Samad Ali, Nurul Huda Mahmood +2
Grant-free random access and uplink non-orthogonal multiple access (NOMA) have been introduced to reduce transmission latency and signaling overhead in massive machine-type communi…
Massive MIMO with Radio Stripes for Indoor Wireless Energy Transfer
Onel L. A. López, Dileep Kumar, Richard Demo Souza +3
Radio frequency wireless energy transfer (WET) is a promising solution for powering autonomous Internet of Things (IoT) deployments. In this work, we leverage energy beamforming fo…
Beyond 5G URLLC Evolution: New Service Modes and Practical Considerations
Hirley Alves, Gweon Do Jo, JaeSheung Shin +13
Ultra-reliable low latency communications (URLLC) arose to serve industrial IoT (IIoT) use cases within the 5G. Currently, it has inherent limitations to support future services. B…
Constrained Deep Reinforcement Based Functional Split Optimization in Virtualized RANs
Fahri Wisnu Murti, Samad Ali, Matti Latva-aho
In virtualized radio access network (vRAN), the base station (BS) functions are decomposed into virtualized components that can be hosted at the centralized unit or distributed uni…
Deep Reinforcement Based Optimization of Function Splitting in Virtualized Radio Access Networks
Fahri Wisnu Murti, Samad Ali, Matti Latva-aho
Virtualized Radio Access Network (vRAN) is one of the key enablers of future wireless networks as it brings the agility to the radio access network (RAN) architecture and offers de…
CSI-free Rotary Antenna Beamforming for Massive RF Wireless Energy Transfer
Onel L. A. López, Hirley Alves, Samuel Montejo-Sánchez +2
Radio frequency (RF) wireless energy transfer (WET) is a key technology that may allow seamlessly powering future massive low-energy Internet of Things (IoT) networks. To enable ef…
Average Rate Analysis of RIS-aided Short Packet Communication in URLLC Systems
Ramin Hashemi, Samad Ali, Nurul Huda Mahmood +1
In this paper, the average achievable rate of a re-configurable intelligent surface (RIS) aided factory automation is investigated in finite blocklength (FBL) regime. First, the co…
Deep Contextual Bandits for Fast Neighbor-Aided Initial Access in mmWave Cell-Free Networks
Insaf Ismath, Samad Ali, Nandana Rajatheva +1
Access points (APs) in millimeter-wave (mmWave) and sub-THz-based user-centric (UC) networks will have sleep mode functionality. As a result of this, it becomes challenging to solv…
Deep Learning-based Power Control for Cell-Free Massive MIMO Networks
Nuwanthika Rajapaksha, K. B. Shashika Manosha, Nandana Rajatheva +1
A deep learning (DL)-based power control algorithm that solves the max-min user fairness problem in a cell-free massive multiple-input multiple-output (MIMO) system is proposed. Ma…
Average Rate and Error Probability Analysis in Short Packet Communications over RIS-aided URLLC Systems
Ramin Hashemi, Samad Ali, Nurul Huda Mahmood +1
In this paper, the average achievable rate and error probability of a reconfigurable intelligent surface (RIS) aided systems is investigated for the finite blocklength (FBL) regime…
Effective Energy Efficiency of Ultra-reliable Low Latency Communication
Mohammad Shehab, Hirley Alves, Eduard A. Jorswieck +2
Effective Capacity defines the maximum communication rate subject to a specific delay constraint, while effective energy efficiency (EEE) indicates the ratio between effective capa…
On the SIR Meta Distribution in Massive MTCNetworks with Scheduling and Data Aggregation
Nelson J. Mayedo Rodríguez, Onel L. Alcaraz López, Hirley Alves +1
Data aggregation is an efficient approach to handle the congestion introduced by a massive number of machine type devices (MTDs). The aggregators not only collect data but also imp…
Network Slicing for eMBB and mMTC with NOMA and Space Diversity Reception
Eduardo Noboro Tominaga, Hirley Alves, Onel Luiz Alcaraz López +3
In this work we study the coexistence in the same Radio Access Network (RAN) of two generic services present in the Fifth Generation (5G) of wireless communication systems: enhance…