174 citations · 276 across the 21 of their papers we have counts for
21 papers
Space-Air-Ground-Integrated Networks: The BER vs. Residual Delay and Doppler Analysis
Chao Zhang, Kunlun Li, Chao Xu +2
Perfect Doppler compensation and synchronization is nontrivial due to multi-path Doppler effects and Einstein's theory of relativity in the space-air-ground-integrated networks (SA…
MIMO-AFDM Outperforms MIMO-OFDM in the Face of Hardware Impairments
Zeping Sui, Zilong Liu, Leila Musavian +3
The impact of both multiplicative and additive hardware impairments (HWIs) on multiple-input multiple-output affine frequency division multiplexing (MIMO-AFDM) systems is investiga…
CDMA/OTFS Sensing Outperforms Pure OTFS at the Same Communication Throughput
Hugo Hawkins, Chao Xu, Lie-Liang Yang +1
There is a dearth of publications on the subject of spreading-aided Orthogonal Time Frequency Space (OTFS) solutions, especially for Integrated Sensing and Communication (ISAC), ev…
Generalized Spatial Modulation Aided Affine Frequency Division Multiplexing
Zeping Sui, Zilong Liu, Leila Musavian +2
Generalized spatial modulation-aided affine frequency division multiplexing (GSM-AFDM) is conceived for reliable multiple-input multiple-output (MIMO) communications over doubly se…
Space-Air-Ground Integrated Networks: Their Channel Model and Performance Analysis
Chao Zhang, Qingchao Li, Chao Xu +2
Given their extensive geographic coverage, low Earth orbit (LEO) satellites are envisioned to find their way into next-generation (6G) wireless communications. This paper explores…
Space-Time Shift Keying Aided OTFS Modulation for Orthogonal Multiple Access
Zeping Sui, Hongming Zhang, Sumei Sun +2
Space-time shift keying-aided orthogonal time frequency space modulation-based multiple access (STSK-OTFS-MA) is proposed for reliable uplink transmission in high-Doppler scenarios…
Performance Analysis and Approximate Message Passing Detection of Orthogonal Time Sequency Multiplexing Modulation
Zeping Sui, Shefeng Yan, Hongming Zhang +4
In orthogonal time sequency multiplexing (OTSM) modulation, the information symbols are conveyed in the delay-sequency domain upon exploiting the inverse Walsh Hadamard transform (…
Low Complexity Detection of Spatial Modulation Aided OTFS in Doubly-Selective Channels
Zeping Sui, Hongming Zhang, Yu Xin +3
A spatial modulation-aided orthogonal time frequency space (SM-OTFS) scheme is proposed for high-Doppler scenarios, which relies on a low-complexity distance-based detection algori…
MDD-Enabled Two-Tier Terahertz Fronthaul in Indoor Industrial Cell-Free Massive MIMO
Bohan Li, Diego Dupleich, Guoqing Xia +4
To make indoor industrial cell-free massive multiple-input multiple-output (CF-mMIMO) networks free from wired fronthaul, this paper studies a multicarrier-division duplex (MDD)-en…
Edge Selection and Clustering for Federated Learning in Optical Inter-LEO Satellite Constellation
Chih-Yu Chen, Li-Hsiang Shen, Kai-Ten Feng +2
Low-Earth orbit (LEO) satellites have been prosperously deployed for various Earth observation missions due to its capability of collecting a large amount of image or sensor data.…
MARS: Message Passing for Antenna and RF Chain Selection for Hybrid Beamforming in MIMO Communication Systems
Li-Hsiang Shen, Yen-Chun Lo, Kai-Ten Feng +2
In this paper, we consider a prospective receiving hybrid beamforming structure consisting of several radio frequency (RF) chains and abundant antenna elements in multi-input multi…
Spectral-Efficiency of Cell-Free Massive MIMO with Multicarrier-Division Duplex
Bohan Li, Lie-Liang Yang, Robert G. Maunder +2
A multicarrier-division duplex (MDD)-based cell-free (CF) scheme, namely MDD-CF, is proposed, which enables downlink (DL) data and uplink (UL) data or pilots to be concurrently tra…
Multicarrier-Division Duplex for Solving the Channel Aging Problem in Massive MIMO Systems
Bohan Li, Lie-Liang Yang, Robert G Maunder +2
The separation of training and data transmission as well as the frequent uplink/downlink (UL/DL) switching make time-division duplex (TDD)-based massive multiple-input multiple-out…
Heterogeneous graph neural network for power allocation in multicarrier-division duplex cell-free massive MIMO systems
Bohan Li, Lie-Liang Yang, Robert G Maunder +2
In-band full duplex cell-free (CF) systems suffer from severe self-interference and cross-link interference, especially when CF systems are operated in distributed way. To this end…
Carrier Phase Ranging for Indoor Positioning with 5G NR Signals
Liang Chen, Xin Zhou, Feifei Chen +2
Indoor positioning is one of the core technologies of Internet of Things (IoT) and artificial intelligence (AI), and is expected to play a significant role in the upcoming era of A…
A Novel Transmission Policy for Intelligent Reflecting Surface Assisted Wireless Powered Sensor Networks
Zheng Chu, Pei Xiao, De Mi +3
This paper proposes a novel transmission policy for an intelligent reflecting surface (IRS) assisted wireless powered sensor network (WPSN). An IRS is deployed to enhance the perfo…
Sparse or Dense: A Comparative Study of Code-Domain NOMA Systems
Zilong Liu, Lie-Liang Yang
This paper is focused on code-domain non-orthogonal multiple access (CD-NOMA), which is an emerging paradigm to support massive connectivity for future machine-type wireless networ…
Spatial Modulation for Molecular Communication
Yu Huang, Miaowen Wen, Lie-Liang Yang +2
In this paper, we propose an energy-efficient spatial modulation based molecular communication (SM-MC) scheme, in which a transmitted symbol is composed of two parts, i.e., a space…
Physical Layer Security of Generalised Pre-coded Spatial Modulation with Antenna Scrambling
Rong Zhang, Lie-Liang Yang, Lajos Hanzo
We now advocate a novel physical layer security solution that is unique to our previously proposed GPSM scheme with the aid of the proposed antenna scrambling. The novelty and cont…
Generalised Precoded Spatial Modulation for Integrated Wireless Information and Power Transfer
Rong Zhang, Lie-Liang Yang, Lajos Hanzo
Conventional wireless information transfer by modulating the amplitude, phase or frequency leads to an inevitable Rate-Energy (RE) trade-off in the presence of simultaneous Wireles…
Robust MMSE Precoding for Multiuser MIMO Relay Systems using Switched Relaying and Side Information
Y. Cai, R. C. de Lamare, L. L. Yang +1
This study proposes a novel precoding scheme for multiuser multiple-input multiple-output (MIMO) relay systems in the presence of imperfect channel state information (CSI). The bas…