109 citations · 600 across the 83 of their papers we have counts for
60 papers · 1 filter
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…
A CRC-aided Hybrid Decoding for Turbo Codes
Yuejun Wei, Ming Jiang, Wen Chen +1
Turbo codes and CRC codes are usually decoded separately according to the serially concatenated inner codes and outer codes respectively. In this letter, we propose a hybrid decodi…
QoS-Based Source and Relay Secure Optimization Design with Presence of Channel Uncertainty
Meng Zhang, Jian Huang, Hui Yu +2
In this letter, we study relay-aided networks with presence of single eavesdropper. We provide joint beamforming design of the source and relay that can minimize the overall power…
Robust Beamforming Design for Sum Secrecy Rate Optimization in MU-MISO Networks
Pu Zhao, Meng Zhang, Hui Yu +2
This paper studies the beamforming design problem of a multi-user downlink network, assuming imperfect channel state information known to the base station. In this scenario, the ba…
Increasing Security Degree of Freedom in Multi-user and Multi-eve Systems
Kun Xie, Wen Chen, Lili Wei
Secure communication in the Multi-user and Multi-eavesdropper (MUME) scenario is considered in this paper. It has be shown that secrecy can be improved when the transmitter simulta…
Regularized Zero-Forcing for Multiantenna Broadcast Channels with User Selection
Zijian Wang, Wen Chen
A multiantenna multiuser broadcast channel with transmitter beamforming and user selection is considered. Different from the conventional works, we consider imperfect channel state…
Efficient Beamforming for MIMO Relaying Broadcast Channel with Imperfect Channel Estimation
Zijian Wang, Wen Chen, Jun Li
We consider a multiple-input multiple-output (MIMO) relaying boardcast channel in downlink cellular networks, where the base station and the relay stations are both equipped with m…
Capacity Performance of Relay Beamformings for MIMO Multi-Relay Networks with Imperfect R-D CSI at Relays
Zijian Wang, Wen Chen, Feifei Gao +1
In this paper, we consider a dual-hop Multiple Input Multiple Output (MIMO) wireless relay network in the presence of imperfect channel state information (CSI), in which a source-d…
Relay Beamforming Design with SIC Detection for MIMO Multi-Relay Networks with Imperfect CSI
Zijian Wang, Wen Chen
In this paper, we consider a dual-hop Multiple Input Multiple Output (MIMO) wireless multi-relay network, in which a source-destination pair both equipped with multiple antennas co…