109 citations · 600 across the 83 of their papers we have counts for
86 papers
Capacity Analysis and Sum Rate Maximization for the SCMA Cellular Network Coexisting with D2D Communications
Yukai Liu, Wen Chen
Sparse code multiple access (SCMA) is the most concerning scheme among non-orthogonal multiple access (NOMA) technologies for 5G wireless communication new interface. Another effic…
Energy-Efficient Backscatter Aided Uplink NOMA Roadside Sensor Communications under Channel Estimation Errors
Asim Ihsan, Wen Chen, Wali Ullah Khan +2
This work presents non-orthogonal multiple access (NOMA) enabled energy-efficient alternating optimization framework for backscatter aided wireless powered uplink sensors communica…
IRS-aided Wireless Powered MEC Systems: TDMA or NOMA for Computation Offloading?
Guangji Chen, Qingqing Wu, Wen Chen +2
An intelligent reflecting surface (IRS)-aided wireless powered mobile edge computing (WP-MEC) system is conceived, where each device's computational task can be divided into two pa…
Beamforming Design and Power Allocation for Transmissive RMS-based Transmitter Architectures
Zhendong Li, Wen Chen, Huanqing Cao
This letter investigates a downlink multiple input single output (MISO) system based on transmissive reconfigurable metasurface (RMS) transmitter. Specifically, a transmitter desig…
IRS-Aided WPCNs: A New Optimization Framework for Dynamic IRS Beamforming
Qingqing Wu, Xiaobo Zhou, Wen Chen +2
In this paper, we propose a new dynamic IRS beamforming framework to boost the sum throughput of an intelligent reflecting surface (IRS) aided wireless powered communication networ…
Federated Learning Over Wireless Channels: Dynamic Resource Allocation and Task Scheduling
Shunfeng Chu, Jun Li, Jianxin Wang +5
With the development of federated learning (FL), mobile devices (MDs) are able to train their local models with private data and sends them to a central server for aggregation, the…
Federated Learning with Unreliable Clients: Performance Analysis and Mechanism Design
Chuan Ma, Jun Li, Ming Ding +3
Owing to the low communication costs and privacy-promoting capabilities, Federated Learning (FL) has become a promising tool for training effective machine learning models among di…
Robust Beamforming Design and Time Allocation for IRS-assisted Wireless Powered Communication Networks
Zhendong Li, Wen Chen, Qingqing Wu +3
In this paper, a novel intelligent reflecting surface (IRS)-assisted wireless powered communication network (WPCN) architecture is proposed for power-constrained Internet-of-Things…
Joint Beamforming Design and Power Splitting Optimization in IRS-Assisted SWIPT NOMA Networks
Zhendong Li, Wen Chen, Qingqing Wu +2
This paper proposes a novel network framework of intelligent reflecting surface (IRS)-assisted simultaneous wireless information and power transfer (SWIPT) non-orthogonal multiple…
Joint Transceiver Design Based on Dictionary Learning Algorithm for SCMA
Shanshan Zhang, Wen Chen, Shaoyuan Chen
With the explosively increasing demands on the network capacity, throughput and number of connected wireless devices, massive connectivity is an urgent problem for the next generat…
Energy-Efficient NOMA Multicasting System for 5G Cellular V2X Communications with Imperfect CSI
Asim Ihsan, Wen Chen, Shunqing Zhang +1
Vehicle-to-everything (V2X) is a modern vehicular technology that improves conventional vehicle systems in traffic and communications. V2X communications demand energyefficient and…
On Dynamic Time Division Duplex Transmissions for Small Cell Networks
Ming Ding, David Lopez-Perez, Ruiqi Xue +2
Motivated by the promising benefits of dynamic Time Division Duplex (TDD), in this paper, we use a unified framework to investigate both the technical issues of applying dynamic TD…
Structured Distributed Compressive Channel Estimation over Doubly Selective Channels
Qibo Qin, Lin Gui, Bo Gong +2
For an orthogonal frequency-division multiplexing (OFDM) system over a doubly selective (DS) channel, a large number of pilot subcarriers are needed to estimate the numerous channe…
Block Distributed Compressive Sensing Based Doubly Selective Channel Estimation and Pilot Design for Large-Scale MIMO Systems
Bo Gong, Lin Gui, Qibo Qin +2
The doubly selective (DS) channel estimation in the large-scale multiple-input multiple-output (MIMO) systems is a challenging problem due to the large number of the channel coeffi…
Subcarrier Assignment and Power Allocation for SCMA Energy Efficiency
Samira Jaber, Wen Chen, Kunlun Wang +1
In this paper we propose resource allocation algorithm for uplink sparse code multiple access (SCMA) networks to maximize the energy efficiency (EE). Due to the joint optimization…
Generalized Quadratic Matrix Programming: A Unified Framework for Linear Precoding With Arbitrary Input Distributions
Juening Jin, Yahong Rosa~Zheng, Wen Chen +1
This paper investigates a new class of non-convex optimization, which provides a unified framework for linear precoding in single/multi-user multiple-input multiple-output (MIMO) c…
SCMA Spectral and Energy Efficiency with QoS
Samira Jaber, Wen Chen, Kunlun Wang +1
Sparse Code Multiple Access (SCMA) is one of the promising candidates for new radio access interface. The new generation communication system is expected to support massive user ac…
Linear Precoding for Fading Cognitive Multiple Access Wiretap Channel with Finite-Alphabet Inputs
Juening Jin, Chengshan Xiao, Meixia Tao +1
We investigate the fading cognitive multiple access wiretap channel (CMAC-WT), in which two secondary-user transmitters (STs) send secure messages to a secondary-user receiver (SR)…
Probabilistic Caching for Small-Cell Networks with Terrestrial and Aerial Users
Fei Song, Jun Li, Ming Ding +5
The support for aerial users has become the focus of recent 3GPP standardizations of 5G, due to their high maneuverability and flexibility for on-demand deployment. In this paper,…
Distributed Caching for Data Dissemination in the Downlink of Heterogeneous Networks
Jun Li, Youjia Chen, Zihuai Lin +3
Heterogeneous cellular networks (HCN) with embedded small cells are considered, where multiple mobile users wish to download network content of different popularity. By caching dat…
Hybrid Precoding For Millimeter Wave MIMO Systems: A Matrix Factorization Approach
Juening Jin, Yahong Rosa Zheng, Wen Chen +1
This paper investigates the hybrid precoding design for millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems with finite-alphabet inputs. The precoding problem is…
Generalized Wireless-Powered Communications: When to Activate Wireless Power Transfer?
Qingqing Wu, Guangchi Zhang, Derrick Wing Kwan Ng +2
Wireless-powered communication network (WPCN) is a key technology to power energy-limited massive devices, such as on-board wireless sensors in autonomous vehicles, for Internet-of…
Comments on A New Parity Check Stopping Criterion for Turbo Decoding
Yuejun Wei, Yuhang Yang, Lili Wei +1
A parity-check stopping (PCS) criterion for turbo decoding is proposed in [1], which shows its priority compared with the stopping criteria of Sign Change Ratio (SCR), Sign Differe…
Joint Shortening and Puncturing Optimization for Structured LDPC Codes
Yuejun Wei, Yuhang Yang, Ming Jiang +2
The demand for flexible broadband wireless services makes the pruning technique, including both shortening and puncturing, an indispensable component of error correcting codes. The…