Article
Telecommunications
J. C. De Luna Ducoing, Yiping Qin, Yun Xue, Konstantinos Nikitopoulos
Summary: Gyre Precoding (GP) is a novel linear multi-user multiple-input multiple-output (MU-MIMO) precoding approach that optimizes performance by rotating symbols. In a 16 x 16 MU-MIMO system, GP achieves an 8 dB SNR gain over linear precoding techniques and a 2 dB gain over suboptimal symbol-level precoding (SLP) methods.
IEEE COMMUNICATIONS LETTERS
(2021)
Article
Computer Science, Information Systems
Chiao-En Chen, Yu-Chuan Liu
Summary: In this letter, computationally efficient precoder and detector design problems are formulated for symbol-level generalized precoding-aided spatial modulation systems with phase-shift-keying signaling. A novel low-complexity decoupled detector is presented, and two new precoders using constructive interference techniques are formulated to enhance the detector's performance. It is shown that both precoder design problems share a unified form, enabling efficient solving using existing iterative closed-form algorithms. The proposed precoders are demonstrated through numerical simulations to strike the best balance between performance and complexity relative to other benchmark algorithms.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Shuo Li, Lixia Xiao, Qiwei Hu, Guanghua Liu, Jiaxi Zhou, Tao Jiang
Summary: This paper investigates the theoretical performance of optimal maximum likelihood (ML) detector and near-optimal simulated detectors in massive MIMO aided grant-free (MM-GF) systems. The approximated average bit error probability (ABEP) bounds are derived by exploiting the relationship between Hamming distance (HD) and pairwise error probability (PEP), which are confirmed by simulation results. Additionally, an extended alphabet based expectation propagation (EA-EP) and an adaptive subspace matching pursuit (ASMP) algorithm are proposed for signal detection in MM-GF without prior information (PI) of active users. Simulation results show that the proposed detectors outperform the classic oracle least squares (OLS) benchmark and approach the theoretical ABEP bounds of ML.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Aravindh Krishnamoorthy, Robert Schober
Summary: This paper investigates the precoder design for an underloaded or critically loaded downlink multi-user MIMO communication system. The proposed precoding scheme utilizes rate splitting and successive interference cancellation to enhance system performance. By adjusting the inter-user interference through linear combinations of the null-space basis vectors of the MIMO channel matrices, the proposed precoding scheme shows enhanced performance and robustness, especially for imperfect channel state information.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Xiaoyou Yu, Qi Yang, Zhu Xiao, Hongyang Chen, Vincent Havyarimana, Zhu Han
Summary: This paper investigates the precoder design for a MIMO DFRC system with one-bit DACs, formulating the problem as a weighted optimization problem to minimize error power and ensure radar waveform similarity. By proposing a multi-variable alternating minimization framework, closed-form solutions for the precoding factor and radar waveform are obtained, with a BPSO-SA algorithm used to solve the transmit signal matrix. Extensive simulations demonstrate the effectiveness of the approach, achieving significant SNR gains in different antenna system configurations.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Behnam Akbarian, Saeed Ghazi-Maghrebi
Summary: This paper proposes a novel MIMO-NOMA framework based on STBC to decrease multiple-access interference, especially when the number of users is increasing. By designing efficient precoder and detector, and decomposing the system into multiple single-input single-output NOMA channels, interference issues are addressed. The proposed algorithm can handle the dramatic increment of power level and achieve optimal solutions.
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Jiancheng An, Chao Xu, Yusha Liu, Lu Gan, Lajos Hanzo
Summary: Generalized quadrature spatial modulation (GQSM) integrates GSM, QSM, and V-BLAST techniques, transmitting additional information bits implicitly through TA activation pattern. The separation of real and imaginary parts of transmit symbols in QSM increases attainable throughput. GQSM shows inherent benefits in terms of throughput and achieves higher rates compared to benchmark schemes, with simulation results showing a 150% rate increase over V-BLAST at 40 TAs using QPSK. Two low-complexity detectors, based on OSIC and OMP algorithms, are also proposed.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Rong Yang, Shuqi Xi, Qibo Cai, Zhizhou Chen, Xiaohang Wang, Gui Liu
Summary: The proposed compact dual-band MIMO antenna, with high isolation and small size, is suitable for 5G and 4G applications.
Article
Computer Science, Information Systems
Zhenhui Chen, Yajun Wang, Zhuxian Lian, Zhibin Xie, Qinghua Liu
Summary: This paper explores a new algorithm for the constant envelope precoding design problem in 5G communication technology, using joint optimization to address the complex non-convex combinatorial optimization problem, improving bit error rate performance, and achieving faster convergence and lower complexity.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Stavros Domouchtsidis, Christos G. Tsinos, Symeon Chatzinotas, Bjorn Ottersten
Summary: A precoding scheme for OFDM transmission in MIMO systems using one-bit DACs and ADCs was developed to reduce power consumption. The design problem was formulated and solved using CCD algorithm, with a separate design for the analog post-coding matrix using ADMM algorithm. Numerical results showed successful mitigation of quantization effects, achieving performance similar to systems with full resolution DACs/ADCs.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2021)
Article
Telecommunications
Zhenqiao Cheng, Zaixue Wei, Chongjun Ouyang, Hongwen Yang
Summary: This letter aims to jointly design users' RF precoders and base station's beam selection network in order to maximize the uplink sum rate of mmWave MIMO systems. An iterative algorithm based on fractional programming, Riemannian gradient, and penalty method is developed, and a low-complexity algorithm is also proposed. The effectiveness of the proposed algorithms is demonstrated through numerical results.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Yu-Hang Xiao, David Ramirez, Peter J. Schreier, Cheng Qian, Lei Huang
Summary: This paper addresses the problem of target detection in MIMO radar and proposes a closed-form detector based on Rao's test, considering the quantization error caused by ADCs. The proposed method has appealing features like handling sign measurements and theoretically evaluating its performance.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Mohammed Almoneer, Patrick Mitran, Slim Boumaiza
Summary: In this study, the impact of two variants of zeroforcing (ZF) precoding on massive MIMO transmitters was investigated. The minimax variant was found to reduce variations in average-power levels across RF chains compared to the conventional ZF precoder, resulting in improved transmitter performance.
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2021)
Article
Computer Science, Information Systems
David Alejandro Urquiza Villalonga, Hatem OdetAlla, M. Julia Fernandez-Getino Garcia, Adam Flizikowski
Summary: This paper evaluates the performance bounds of 5G-NR precoding matrices in both single-user and multi-user MIMO systems and compares them with theoretical precoding techniques. It analyzes the performance under different configurations and the impact of channel estimation errors. The results provide valuable guidance for system designers.
Article
Computer Science, Information Systems
Ting Liu, Xiaoming Wang, Yuanxue Xin, Xi Yang
Summary: This paper studies the precoding-based PAPR reduction methods for the massive MIMO-OFDM system in the angular domain. The EM-GAMP algorithm and the proposed OADMM scheme are adopted to explore the system characteristics in terms of SER performance, PAPR reduction efficiency, and IUI. The numerical simulation results verify the efficiency of the proposed technique in terms of SER, PAPR suppression, and IUI.
Article
Engineering, Electrical & Electronic
Zongze Li, Minghua Xia, Miaowen Wen, Yik-Chung Wu
Summary: This article introduces a novel approach to address channel uncertainties in secure NOMA schemes by transforming probabilistic constraints and decoupling variables. This method maximizes the total rate while enhancing security.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2021)
Article
Computer Science, Information Systems
Jun Li, Shuping Dang, Miaowen Wen, Zhenrong Zhang, Qiang Li
Summary: To address the high detection complexity of OFDM-SNM signals, a cascaded artificial neural network (CANN) is designed to provide a simplified solution, with numerical simulations confirming its effectiveness and efficiency.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Telecommunications
Shanfeng Huang, Shuai Wang, Rui Wang, Miaowen Wen, Kaibin Huang
Summary: This article proposes an infrastructure for performing machine learning tasks using mobile edge computing and reconfigurable intelligent surfaces. By optimizing the transmit power of mobile users, beamforming vectors of the base station, and the phase-shift matrix of the intelligent surface, the learning performance is maximized. The developed algorithms and platform demonstrate a use case of 3D object detection in autonomous driving.
IEEE TRANSACTIONS ON COGNITIVE COMMUNICATIONS AND NETWORKING
(2021)
Article
Engineering, Electrical & Electronic
Zhaolong Ning, Peiran Dong, Miaowen Wen, Xiaojie Wang, Lei Guo, Ricky Y. K. Kwok, H. Vincent Poor
Summary: This paper introduces a 5G-enabled UAV-to-community offloading system by clustering multiple users into independent communities to maximize system throughput. By solving two subproblems, an auction algorithm and dynamic task admission algorithm are designed to ensure user truthfulness and system throughput maximization. Performance analyses demonstrate the effectiveness of the proposed algorithm in real-world scenarios.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Xinyue Pei, Yingyang Chen, Miaowen Wen, Hua Yu, Erdal Panayirci, H. Vincent Poor
Summary: To address the anticipated explosive traffic growth in next-generation wireless networks, it is crucial to design next-generation multiple access techniques that can offer higher spectral efficiency and larger-scale connectivity. Power-domain non-orthogonal multiple access (NOMA) has garnered widespread attention as a promising solution. However, conventional power-domain NOMA may limit the spectral efficiency under practical finite alphabet inputs. To overcome this limitation, we propose power selection (PS)-NOMA, inspired by the concept of spatial modulation, which encodes extra information bits into power levels and utilizes different signal constellations to distinguish between users. Simulation results demonstrate the superiority of PS-NOMA over conventional NOMA in terms of bit error rate (BER) and achievable rate.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Yan Yang, Shuping Dang, Miaowen Wen, Mohsen Guizani
Summary: The paper investigates the application of MIMO-OFDM-IM to millimeter wave communication systems, using a hybrid analogy-digital beamforming architecture, to achieve a globally Pareto-optimal trade-off between SE and EE. The Pareto-optimal beam design allows for efficient resolution of the collision constraints in multi-objective optimization problems.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2021)
Article
Computer Science, Information Systems
Yuankun Tang, Fei Ji, Miaowen Wen, Qianqian Wang, Lie-Liang Yang
Summary: This study introduces molecular type permutation shift keying (MTPSK) and its enhanced version, which improve the achievable rate (AR) by using different permutations of molecular types. Numerical results show the advantage of this approach in combating interference.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Ling He, Miaowen Wen, Yingyang Chen, Mengchun Yan, Bingli Jiao
Summary: This paper investigates a multi-vehicle multi-task non-orthogonal multiple access (NOMA) assisted mobile edge computing (MEC) system with passive eavesdropping vehicles. The proposed scheme utilizes nearby vehicles as full-duplex relays to assist edge vehicles and employs artificial noise to enhance transmission security. The combined optimization of vehicle task division, power allocation, and transmit beamforming is formulated to minimize the total delay of task completion for edge vehicles.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Telecommunications
Xuan Chen, Fei Ji, Miaowen Wen, Yu Huang, Yuankun Tang, Andrew W. Eckford
Summary: In this paper, a novel inter-symbol interference (ISI) mitigation scheme for molecular communication via diffusion (MCvD) systems with the optimal detection interval is proposed. The scheme exploits the discarded duration to relieve ISI in the target system. An objective function is formulated to quantify the impact of the discarded time on bit error rate (BER) performance. Additionally, an optimally reusable interval within the discarded duration is derived in closed form, applicable to both absorbing and passive receivers. Numerical results demonstrate significant BER improvements for the considered MCvD system using the derived reusable duration.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Xuan Chen, Miaowen Wen, Fei Ji, Yu Huang, Yuankun Tang, Andrew W. Eckford
Summary: This paper proposes a two-layer heterogeneous network for remote monitoring and advanced warning of infectious diseases spread by airborne pathogens. The study abstracts the detection process as a molecular communication via diffusion (MCvD) model and identifies inter-symbol interference (ISI) as a key factor affecting the detection performance. To overcome ISI, the paper suggests optimizing the detection interval while ensuring accurate detection of transmitted information. Simulation results demonstrate the superiority of the proposed scheme in terms of bit error rate (BER).
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Zahid Iqbal, Fei Ji, Jun Li, Miaowen Wen, Xiaomin Qi
Summary: A novel multiple-input multiple-output MM-OFDM-IM (MIMO-MM-OFDM-IM) scheme is proposed in this paper by combining MM-OFDM-IM and MIMO techniques. Low complexity detection methods are introduced to reduce the receiver complexity, and theoretical analysis on bit error rate (BER) is derived to evaluate the performance. Monte Carlo simulations show that the proposed scheme achieves higher spectral efficiency and better error performance compared to conventional schemes.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Proceedings Paper
Computer Science, Information Systems
Shaoe Lin, Miaowen Wen, Fangjiong Chen
Summary: This paper proposes a new channel estimation scheme using the full-duplex technique to estimate the channel state information (CSI) of all users' cascaded channels in a multiuser communication system. The proposed scheme significantly reduces the required training overhead and improves efficiency.
2022 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Jie Liu, Fei Ji, Hao Zhao, Jie Li, Miaowen Wen
Summary: This paper proposes a convolutional neural network-based orthogonal frequency division multiplexing receiver for underwater acoustic communication, which integrates channel estimation and equalization for doubly-selective channels. The architecture named DECCN reduces complexity by using an encoder and a decoder based on convolutional neural networks, achieving good performance for various signal lengths without changing the system structure. The proposed scheme effectively reduces bit error rate, especially with pilot length only 1/8 of the signal or without cyclic prefix.
2021 IEEE 94TH VEHICULAR TECHNOLOGY CONFERENCE (VTC2021-FALL)
(2021)
Proceedings Paper
Telecommunications
Jun Li, Shuping Dang, Miaowen Wen, Shahid Mumtaz, Qiang Li, Constandinos X. Mavromoustakis
Summary: The paper proposes a hybrid OFDM-SNM scheme JM-OFDM-SNM to avoid transmitting variable lengths of information bits by jointly considering subcarrier activation patterns and constellation symbols. A low-complexity detection method is designed to relieve the high computational complexity of optimal ML detection, and an upper bound on the bit error rate of IM-OFDM-SNM is analyzed. Additionally, a more general adaptive scheme named AJM-OFDM-SNM is proposed to enhance the utilization of frequency resource, achieving better performance than existing schemes.
IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC 2021)
(2021)
Article
Telecommunications
Miaowen Wen, Shaoe Lin, Kyeong Jin Kim, Fei Ji
Summary: This article proposes a method to improve the spectral efficiency of the CDD system using the concept of index modulation, and designs methods to generate cyclic delays and optimal receivers for both proposed systems. Additionally, a suboptimal receiver for the CDD-CPSC-IM system is proposed to reduce computational complexity. Simulation results confirm the superiority of the proposed systems over pure CDD-OFDM and CDD-CPSC systems, highlighting the potential of CDD in green IoT networks.
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING
(2021)
