356 citations · 917 across the 37 of their papers we have counts for
39 papers
A Spatially Non-stationary Fading Channel Model for Simulation and (Semi-) Analytical Study of ELAA-MIMO
Jiuyu Liu, Yi Ma, Rahim Tafazolli
In this paper, a novel spatially non-stationary fading channel model is proposed for multiple-input multiple-output (MIMO) system with extremely-large aperture service-array (ELAA)…
On Chernoff Lower-Bound of Outage Threshold for Non-Central -Distributed MIMO Beamforming Gain
Jinfei Wang, Yi Ma, Rahim Tafazolli
The cumulative distribution function (CDF) of a non-central -distributed random variable (RV) is often used when measuring the outage probability of communication systems. For…
Alternative Normalized-Preconditioning for Scalable Iterative Large-MIMO Detection
Jiuyu Liu, Yi Ma, Rahim Tafazolli
Signal detection in large multiple-input multiple-output (large-MIMO) systems presents greater challenges compared to conventional massive-MIMO for two primary reasons. First, larg…
Enhancement of Direct LEO Satellite-to-Smartphone Communications by Distributed Beamforming
Zhuoao Xu, Gaojie Chen, Ryan Fernandez +2
The low earth orbit (LEO) satellite network is undergoing rapid development with the maturing of satellite communications and rocket launch technologies, and the demand for a globa…
Enhancement of Satellite-to-Phone Link Budget by Using Distributed Beamforming
Zhuoao Xu, Yue Gao, Gaojie Chen +3
Small satellites in Low Earth Orbit (LEO) attract much attention from both industry and academia. The latest production and launch technologies constantly drive the development of…
Leveraging User-Wise SVD for Accelerated Convergence in Iterative ELAA-MIMO Detections
Jiuyu Liu, Yi Ma, Rahim Tafazolli
Numerous low-complexity iterative algorithms have been proposed to offer the performance of linear multiple-input multiple-output (MIMO) detectors bypassing the channel matrix inve…
Space MIMO: Direct Unmodified Handheld to Multi-Satellite Communication
Yasaman Omid, Zohre Mashayekh Bakhsh, Farbod Kayhan +2
This paper examines the uplink transmission of a single-antenna handsheld user to a cluster of satellites, with a focus on utilizing the inter-satellite links to enable cooperative…
Outage Tradeoff Analysis in a Downlink Integrated Sensing and Communication Network
Marziyeh Soltani, Mahtab Mirmohseni, Rahim Tafazolli
This paper aims to analyze the stochastic performance of a multiple input multiple output (MIMO) integrated sensing and communication (ISAC) system in a downlink scenario, where a…
UAV-RIS-Aided Space-Air-Ground Integrated Network: Interference Alignment Design and DoF Analysis
Jingfu Li, Gaojie Chen, Tong Zhang +4
In space-air-ground integrated networks (SAGIN), receivers experience diverse interference from both the satellite and terrestrial transmitters. The heterogeneous structure of SAGI…
Achieving Maximum-likelihood Detection Performance with Square-order Complexity in Large Quasi-Symmetric MIMO Systems
Jiuyu Liu, Yi Ma, Rahim Tafazolli
We focus on the signal detection for large quasi-symmetric (LQS) multiple-input multiple-output (MIMO) systems, where the numbers of both service (M) and user (N) antennas are larg…
Collaborative Learning with a Drone Orchestrator
Mahdi Boloursaz Mashhadi, Mahnoosh Mahdavimoghadam, Rahim Tafazolli +1
In this paper, the problem of drone-assisted collaborative learning is considered. In this scenario, swarm of intelligent wireless devices train a shared neural network (NN) model…
Sherman-Morrison Regularization for ELAA Iterative Linear Precoding
Jinfei Wang, Yi Ma, Na Yi +1
The design of iterative linear precoding is recently challenged by extremely large aperture array (ELAA) systems, where conventional preconditioning techniques could hardly improve…
Secure Transmission for THz-Empowered RIS-Assisted Non-Terrestrial Networks
Jing Yuan, Gaojie Chen, Miaowen Wen +2
The non-terrestrial networks (NTNs) are recognized as a key component to provide cost-effective and high-capacity ubiquitous connectivity in the future wireless communications. In…
Constellation-Oriented Perturbation for Scalable-Complexity MIMO Nonlinear Precoding
Jinfei Wang, Yi Ma, Na Yi +2
In this paper, a novel nonlinear precoding (NLP) technique, namely constellation-oriented perturbation (COP), is proposed to tackle the scalability problem inherent in conventional…
Convergence Acceleration in Wireless Federated Learning: A Stackelberg Game Approach
Kaidi Wang, Yi Ma, Mahdi Boloursaz Mashhadi +3
This paper studies issues that arise with respect to the joint optimization for convergence time in federated learning over wireless networks (FLOWN). We consider the criterion and…
Intelligent Omni Surface-Assisted Self-Interference Cancellation for Full-Duplex MISO System
Sisai Fang, Gaojie Chen, Pei Xiao +2
The full-duplex (FD) communication can achieve higher spectrum efficiency than conventional half-duplex (HD) communication; however, self-interference (SI) is the key hurdle. This…
Power Allocation for FDMA-URLLC Downlink with Random Channel Assignment
Jinfei Wang, Yi Ma, Na Yi +1
Concerning ultra-reliable low-latency communication (URLLC) for the downlink operating in the frequency-division multiple-access with random channel assignment, a lightweight power…
Network-ELAA Beamforming and Coverage Analysis for eMBB/URLLC in Spatially Non-Stationary Rician Channels
Jinfei Wang, Yi Ma, Na Yi +2
In vehicle-to-infrastructure (V2I) networks, a cluster of multi-antenna access points (APs) can collaboratively conduct transmitter beamforming to provide data services (e.g., eMBB…
Massive-MIMO MF Beamforming with or without Grouped STBC for Ultra-Reliable Single-Shot Transmission Using Aged CSIT
Jinfei Wang, Yi Ma, Na Yi +2
The technology of using massive transmit-antennas to enable ultra-reliable single-shot transmission (URSST) is challenged by the transmitter-side channel knowledge (i.e., CSIT) imp…
A Non-Stationary Channel Model with Correlated NLoS/LoS States for ELAA-mMIMO
Jiuyu Liu, Yi Ma, Jinfei Wang +4
In this paper, a novel spatially non-stationary channel model is proposed for link-level computer simulations of massive multiple-input multiple-output (mMIMO) with extremely large…
Joint QoS-aware and Cost-efficient Task Scheduling for Fog-Cloud Resources in a Volunteer Computing System
Farooq Hoseiny, Sadoon Azizi, Mohammad Shojafar +1
Volunteer computing is an Internet-based distributed computing system in which volunteers share their extra available resources to manage large-scale tasks. However, computing devi…
Towards Radio Designs with Non-Linear Processing for Next Generation Mobile Systems
Konstantinos Nikitopoulos, Marcin Filo, Chathura Jayawardena +1
MIMO mobile systems, with a large number of antennas at the base-station side, enable the concurrent transmission of multiple, spatially separated information streams and, therefor…
Online Advertising Security: Issues, Taxonomy, and Future Directions
Zahra Pooranian, Mauro Conti, Hamed Haddadi +1
Online advertising has become the backbone of the Internet economy by revolutionizing business marketing. It provides a simple and efficient way for advertisers to display their ad…
On Deep Learning Solutions for Joint Transmitter and Noncoherent Receiver Design in MU-MIMO Systems
Songyan Xue, Yi Ma, Na Yi +1
This paper aims to handle the joint transmitter and noncoherent receiver design for multiuser multiple-input multiple-output (MU-MIMO) systems through deep learning. Given the deep…