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Long Yang

Publications
66
Citations
787
Publications by Year
20142025
Co-Authors:
Show All Co-Authors (83)
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Long Yang

Affiliation

State Key Laboratory of Integrated Services Networks
Xidian University
Xi’an, China

Publication Topics

Biography

Long Yang (Member, IEEE) received the B.E. and Ph.D. degrees from Xidian University, Xian, China, in 2010 and 2015, respectively. Since 2015, he has been a Faculty Member with Xidian University, where he is currently an Associate Professor with the State Key Laboratory of Integrated Services Networks. From 2017 to 2019, he was a Post-Doctoral Fellow with the Department of Electrical and Computer Engineering, University of Alberta, Canada. His current research interests include non-orthogonal multiple access, cooperative communications, and wireless physical-layer security.(Based on document published on 31 August 2022).
Publications
66
Citations
787
Publications by Year
20142025
Co-Authors:
Show All Co-Authors (83)
Author's Published Works

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An Exact Analysis on Security-Reliability Tradeoff in Downlink Rate Splitting Multiple Access

Weiping Shang;Zheng Xiang;Peng Ren;Long Yang

IEEE Communications Letters
Year: 2025 | Early Access Article |
This letter considers the downlink transmission in the rate-splitting multiple access (RSMA) aided system in slow-fading channels. Specifically, a source transmits the intended common and private streams both at constant rates to the served K users at the same time-frequency resources, while an external eavesdropper tries to overhear the messages sent to the K legitimate users. In contrast to the ...Show More

An Exact Analysis on Security-Reliability Tradeoff in Downlink Rate Splitting Multiple Access

Weiping Shang;Zheng Xiang;Peng Ren;Long Yang

Year: 2025 | Early Access Article |

MSE-based Sampling of Bandlimited Product Graph Signals via Joint Low-pass Impulse Responses

Fen Wang;Baoyi Xu;Xuyao Kang;Peng Ren;Long Yang

ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Year: 2025 | Conference Paper |
Matrix graph signals, which are associated with two factor graphs, are ubiquitous in daily life, such as time-varying physical signals in sensor networks and rating matrices in recommendation systems. In practice, due to the row-wise and column-wise smoothness, they are modeled as bandlimited (BL) graph signals on the product of two factor graphs. In this paper, we propose a fast sampling method f...Show More

MSE-based Sampling of Bandlimited Product Graph Signals via Joint Low-pass Impulse Responses

Fen Wang;Baoyi Xu;Xuyao Kang;Peng Ren;Long Yang

Year: 2025 | Conference Paper |

Structured SCMA Codebook Design by Joint Parameter Optimization Based on Union Bound

Shuangduo Zhang;Zheng Xiang;Peng Ren;Wei Li;Long Yang

IEEE Communications Letters
Year: 2025 | Early Access Article |
In the structured codebook design for sparse code multiple access (SCMA) systems, the constellation structure, constellation mapping matrix (CMM), and bit labeling are critical factors influencing the error performance of optimized codebooks. However, existing multi-stage codebook design methods limit the potential coding gain. Besides, although the minimum Euclidean distance (MED) is commonly use...Show More

Structured SCMA Codebook Design by Joint Parameter Optimization Based on Union Bound

Shuangduo Zhang;Zheng Xiang;Peng Ren;Wei Li;Long Yang

Year: 2025 | Early Access Article |

Resource Allocation for Heterogeneous Statistical QoS Provisioning Over Internet-of-Vehicles via Hierarchical Deep Reinforcement Learning

Yuchen Zhou;Fei Richard Yu;Mengmeng Ren;Long Yang;Jian Chen

IEEE Transactions on Cognitive Communications and Networking
Year: 2025 | Early Access Article |
The high-dynamic characteristics of vehicular networks make it difficult to satisfy strict deterministic quality-of-service (QoS) conditions. Statistical QoS provisioning instead of deterministic QoS provisioning can provide an efficient way to satisfy delay-bounded QoS requirements of vehicular services. Different from the existing work, this paper considers the heterogeneity of statistical QoS p...Show More

Resource Allocation for Heterogeneous Statistical QoS Provisioning Over Internet-of-Vehicles via Hierarchical Deep Reinforcement Learning

Yuchen Zhou;Fei Richard Yu;Mengmeng Ren;Long Yang;Jian Chen

Year: 2025 | Early Access Article |

Fast Converging Algorithm for Blind Equalization With Gaussian and Impulsive Noises

Jin Li;Wei Xing Zheng;Long Yang

IEEE Transactions on Signal Processing
Year: 2025 | Volume: 73 | Journal Article |
This paper proposes a blind equalization algorithm for dispersive wireless communication systems that employ high throughput quadrature amplitude modulation signals under both Gaussian and impulsive noise environments. A novel cost function that combines the modulus match error function with the negative Gaussian kernel function is established to efficiently obtain the weight vector associated wit...Show More

Fast Converging Algorithm for Blind Equalization With Gaussian and Impulsive Noises

Jin Li;Wei Xing Zheng;Long Yang

Year: 2025 | Volume: 73 | Journal Article |

RIS-Assisted Wireless Powered MEC: Multiple Access Design and Resource Allocation

Lu Lv;Hao Luo;Long Yang;Zhiguo Ding;Arumugam Nallanathan;Naofal Al-Dhahir;Jian Chen

IEEE Transactions on Wireless Communications
Year: 2025 | Volume: 24, Issue: 2 | Journal Article |
This paper investigates a reconfigurable intelligent surface (RIS)-assisted wireless powered mobile edge computing (MEC) system, where an access point (AP) integrated with an MEC server first transmits energy signals to charge multiple energy-constrained devices in the downlink (DL), and then the devices utilize the harvested energy to perform MEC offloading in the uplink (UL) assisted by an RIS. ...Show More

RIS-Assisted Wireless Powered MEC: Multiple Access Design and Resource Allocation

Lu Lv;Hao Luo;Long Yang;Zhiguo Ding;Arumugam Nallanathan;Naofal Al-Dhahir;Jian Chen

Year: 2025 | Volume: 24, Issue: 2 | Journal Article |

Dual-Functional Artificial Noise (DFAN) Aided Robust Covert Communications in Integrated Sensing and Communications

Runzhe Tang;Long Yang;Lu Lv;Zheng Zhang;Yuanwei Liu;Jian Chen

IEEE Transactions on Communications
Year: 2025 | Volume: 73, Issue: 2 | Journal Article |
This paper investigates covert communications in an integrated sensing and communications system, where a dual-functional base station (called Alice) covertly transmits signals to a covert user (called Bob) while sensing multiple targets, with one of them acting as a potential watcher (called Willie) and maliciously eavesdropping on legitimate communications. To shelter the covert communications, ...Show More

Dual-Functional Artificial Noise (DFAN) Aided Robust Covert Communications in Integrated Sensing and Communications

Runzhe Tang;Long Yang;Lu Lv;Zheng Zhang;Yuanwei Liu;Jian Chen

Year: 2025 | Volume: 73, Issue: 2 | Journal Article |

Dynamic Beamforming Design for Near-Field MIMO Communications

Zheng Zhang;Yuanwei Liu;Zhaolin Wang;Jian Chen;Long Yang

2024 International Conference on Ubiquitous Communication (Ucom)
Year: 2024 | Conference Paper |
A novel dynamic hybrid beamforming architecture is proposed to achieve the spatial multiplexing-power consumption tradeoff for near-field multiple-input multiple-output (MI-MO) networks, where a switch module is integrated between the baseband digital and analog phase-shift module to control the number of activated RF chains. Based on this architecture, an optimization problem is formulated that m...Show More

Dynamic Beamforming Design for Near-Field MIMO Communications

Zheng Zhang;Yuanwei Liu;Zhaolin Wang;Jian Chen;Long Yang

Year: 2024 | Conference Paper |

Symbiotic NOMA: A Mutualism Communication Paradigm Toward Green Massive Access

Yan Zhang;Lu Lv;Long Yang;Yongjun Xu;Zhiguo Ding;Jian Chen

IEEE Communications Letters
Year: 2024 | Volume: 28, Issue: 10 | Journal Article |
In this letter, we propose a symbiotic non-orthogonal multiple access (NOMA) mutually reinforcing paradigm for green massive access to better meet the diverse and challenging requirements of Internet-of-Things. In particular, the backscatter device (BD) utilizes the same spectrum resources of the legacy users for reflection while providing beneficial multipath to enhance the performance of legacy ...Show More

Symbiotic NOMA: A Mutualism Communication Paradigm Toward Green Massive Access

Yan Zhang;Lu Lv;Long Yang;Yongjun Xu;Zhiguo Ding;Jian Chen

Year: 2024 | Volume: 28, Issue: 10 | Journal Article |

Safeguarding Next-Generation Multiple Access Using Physical Layer Security Techniques: A Tutorial

Lu Lv;Dongyang Xu;Rose Qingyang Hu;Yinghui Ye;Long Yang;Xianfu Lei;Xianbin Wang;Dong In Kim;Arumugam Nallanathan

Proceedings of the IEEE
Year: 2024 | Volume: 112, Issue: 9 | Journal Article |
Cited by: Papers (14)
Driven by the ever-increasing requirements of ultrahigh spectral efficiency, ultralow latency, and massive connectivity, the forefront of wireless research calls for the design of advanced next-generation multiple access schemes to facilitate the provisioning of these stringent demands. This inspires the embrace of nonorthogonal multiple access (NOMA) in future wireless communication networks. Nev...Show More

Safeguarding Next-Generation Multiple Access Using Physical Layer Security Techniques: A Tutorial

Lu Lv;Dongyang Xu;Rose Qingyang Hu;Yinghui Ye;Long Yang;Xianfu Lei;Xianbin Wang;Dong In Kim;Arumugam Nallanathan

Year: 2024 | Volume: 112, Issue: 9 | Journal Article |

Hybrid NOMA Offloading With Semi-Dynamic IRS Beamforming in Wireless Powered MEC Systems

Xianglin Zhang;Lu Lv;Long Yang;Xiaoli Chu;Arumugam Nallanathan;Jian Chen

IEEE Wireless Communications Letters
Year: 2024 | Volume: 13, Issue: 9 | Journal Article |
To address the power and computation limitations of the Internet-of-Things (IoT) devices, this letter investigates integrating wireless power transfer (WPT) and mobile edge computing (MEC) with intelligent reflective surfaces (IRS) in 6G networks. An optimization problem is formulated to minimize the energy consumption of the access point (AP) for WPT while ensuring timely completion of task offlo...Show More

Hybrid NOMA Offloading With Semi-Dynamic IRS Beamforming in Wireless Powered MEC Systems

Xianglin Zhang;Lu Lv;Long Yang;Xiaoli Chu;Arumugam Nallanathan;Jian Chen

Year: 2024 | Volume: 13, Issue: 9 | Journal Article |

UAV-Assisted Mobile Edge Computing: Optimal Design of UAV Altitude and Task Offloading

Min Hui;Jian Chen;Long Yang;Lu Lv;Hai Jiang;Naofal Al-Dhahir

IEEE Transactions on Wireless Communications
Year: 2024 | Volume: 23, Issue: 10 | Journal Article |
This paper investigates a mobile edge computing (MEC) network assisted by an unmanned aerial vehicle (UAV), where the moving UAV and a fixed ground base station cooperatively provide MEC services for multiple ground users. To evaluate the quality of service under this architecture, we first derive the successful edge computing probability (SECP) to evaluate the service reliability. Given a target ...Show More

UAV-Assisted Mobile Edge Computing: Optimal Design of UAV Altitude and Task Offloading

Min Hui;Jian Chen;Long Yang;Lu Lv;Hai Jiang;Naofal Al-Dhahir

Year: 2024 | Volume: 23, Issue: 10 | Journal Article |

OTFS-Based Downlink Network-Coded Multiple Access With Joint Amplitude-Phase Design

Peng Ren;Bohao Cao;Zheng Xiang;Long Yang;Baoyi Xu;Yi Li

IEEE Wireless Communications Letters
Year: 2024 | Volume: 13, Issue: 6 | Journal Article |
This letter designs an orthogonal time-frequency space (OTFS) enabled network-coded multiple access (NCMA) system for enhancing the throughput in high-mobility scenarios. For the designed system, the impact of power distribution and relative phase offset is theoretically analyzed and the upper-bound symbol error probability is derived into a closed-form expression. To further minimize the upper-bo...Show More

OTFS-Based Downlink Network-Coded Multiple Access With Joint Amplitude-Phase Design

Peng Ren;Bohao Cao;Zheng Xiang;Long Yang;Baoyi Xu;Yi Li

Year: 2024 | Volume: 13, Issue: 6 | Journal Article |

An Exact Analysis on Matrix-Based Precoding for the Common Message in Downlink Rate Splitting Multiple Access

Weiping Shang;Peng Ren;Zheng Xiang;Long Yang

IEEE Communications Letters
Year: 2024 | Volume: 28, Issue: 4 | Journal Article |
Cited by: Papers (1)
We propose a matrix-based precoding scheme for the common message in downlink rate splitting multiple access (RSMA), where a multi-antenna transmitter serves $K$ single-antenna users at a time. In the proposed precoding scheme, the matched filtering (MF) precodes the common message, while the private messages are preceded by zero-forcing (ZF). We derive the closed-form expression for the outage ...Show More

An Exact Analysis on Matrix-Based Precoding for the Common Message in Downlink Rate Splitting Multiple Access

Weiping Shang;Peng Ren;Zheng Xiang;Long Yang

Year: 2024 | Volume: 28, Issue: 4 | Journal Article |

Energy-Delay Tradeoff in Helper-Assisted NOMA-MEC Systems: A Four-Sided Matching Algorithm

Mengmeng Ren;Jian Chen;Long Yang;Yuchen Zhou;Bingtao He;Hai Jiang

IEEE Transactions on Communications
Year: 2024 | Volume: 72, Issue: 5 | Journal Article |
Cited by: Papers (2)
This paper designs a helper-assisted offloading strategy in non-orthogonal multiple access enabled mobile edge computing systems, in order to guarantee the quality of service of the energy/delay-sensitive user equipments (UEs). To achieve a tradeoff between the energy consumption and the delay, we introduce a performance metric called energy-delay tradeoff. Aiming at the maximal energy-delay trade...Show More

Energy-Delay Tradeoff in Helper-Assisted NOMA-MEC Systems: A Four-Sided Matching Algorithm

Mengmeng Ren;Jian Chen;Long Yang;Yuchen Zhou;Bingtao He;Hai Jiang

Year: 2024 | Volume: 72, Issue: 5 | Journal Article |

Joint Power Allocation and Decoding Order Selection for NOMA Systems: Outage-Optimal Strategies

Mengqi Yang;Jian Chen;Zhiguo Ding;Yuanwei Liu;Lu Lv;Long Yang

IEEE Transactions on Wireless Communications
Year: 2024 | Volume: 23, Issue: 1 | Journal Article |
Cited by: Papers (5)
We investigate joint power allocation and decoding order selection (PA-DOS) aimed at enhancing the outage performance of non-orthogonal multiple access (NOMA) systems. By considering the diverse target rates of users, new important properties of NOMA are revealed: When users’ target rates satisfy certain conditions, the channel state information (CSI) is not required by PA-DOS to minimize the syst...Show More

Joint Power Allocation and Decoding Order Selection for NOMA Systems: Outage-Optimal Strategies

Mengqi Yang;Jian Chen;Zhiguo Ding;Yuanwei Liu;Lu Lv;Long Yang

Year: 2024 | Volume: 23, Issue: 1 | Journal Article |

Secure Communications in IRS-Assisted NOMA Networks with Location Optimization

Junjie Yang;Lu Lv;Long Yang;Jian Chen

2023 IEEE 23rd International Conference on Communication Technology (ICCT)
Year: 2023 | Conference Paper |
This paper proposes a secrecy transmission for intelligent reflecting surface (IRS) assisted non-orthogonal mul-tiple access (NOMA) network. Different from existing schemes with fixed IRS location, we optimize the IRS location and active/passive beamforming to maximize the sum secrecy rate, considering channel spatial correlation and only eavesdropper's statistical channel state information (CSI)....Show More

Secure Communications in IRS-Assisted NOMA Networks with Location Optimization

Junjie Yang;Lu Lv;Long Yang;Jian Chen

Year: 2023 | Conference Paper |

Simultaneously Transmitting and Reflecting Surface Assisted Multi-Antenna Covert Communications

Runzhe Tang;Zheng Zhang;Long Yang;Jian Chen

2023 IEEE 23rd International Conference on Communication Technology (ICCT)
Year: 2023 | Conference Paper |
This paper investigates covert communication in a simultaneously transmitting and reflecting surface (STARS) assisted multi-antenna system, where a multi-antenna base station (BS) communicates with a covert user and a public user against a warden. Particularly, the phase-shift uncertainty of STARS and the public signal transmission are combined as the uncertainty sources to conceal the covert tran...Show More

Simultaneously Transmitting and Reflecting Surface Assisted Multi-Antenna Covert Communications

Runzhe Tang;Zheng Zhang;Long Yang;Jian Chen

Year: 2023 | Conference Paper |

Cooperative NOMA for Simultaneous Uplink and Downlink Transmission

Bingtao He;Yanhui Chen;Long Yang;Lu Lv;Yuchen Zhou;Jian Chen

2023 IEEE 23rd International Conference on Communication Technology (ICCT)
Year: 2023 | Conference Paper |
In this paper, a cooperative non-orthogonal multiple access (NOMA) network is considered, where a strong user (SU) serves as a relay to provide the connection between the base station (BS) and a weak user (WU). A simultaneous uplink and downlink transmission strategy is designed to support the bidirectional communications between BS and users. The analytical expression of the ergodic sum rate (ESR...Show More

Cooperative NOMA for Simultaneous Uplink and Downlink Transmission

Bingtao He;Yanhui Chen;Long Yang;Lu Lv;Yuchen Zhou;Jian Chen

Year: 2023 | Conference Paper |

On the MEC Service Reliability of Two-Tier HetNets: A Stochastic Perspective

Min Hui;Long Yang;Lu Lv;Yuchen Zhou;Bingtao He;Jian Chen

2023 IEEE 23rd International Conference on Communication Technology (ICCT)
Year: 2023 | Conference Paper |
This paper investigates the service reliability in large-scale multi-access edge computing (MEC)-enabled heterogeneous networks (HetNet). To jointly consider the critical latency and reliability requirements, we introduce a novel metric termed the successful service probability meta distribution, which quantifies the proportion of users satisfying latency requirements with the reliability above a ...Show More

On the MEC Service Reliability of Two-Tier HetNets: A Stochastic Perspective

Min Hui;Long Yang;Lu Lv;Yuchen Zhou;Bingtao He;Jian Chen

Year: 2023 | Conference Paper |

Self-Sustainable Intelligent Omni-Surface Aided Multi-User Wireless Networks

Hao Luo;Lu Lv;Long Yang;Qingqing Wu;Zhiguo Ding;Naofal Al-Dhahir;Jian Chen

2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
We investigate a new self-sustainable intelligent omni-surface (S-IOS) aided multi-user wireless network, where the S-IOS harvests the radio frequency energy from the signals transmitted by the access point (AP) and exploits the harvested energy to provide full-dimensional beamforming services for the users. We design a joint optimization problem of transmit beamforming at the AP, refraction/refle...Show More

Self-Sustainable Intelligent Omni-Surface Aided Multi-User Wireless Networks

Hao Luo;Lu Lv;Long Yang;Qingqing Wu;Zhiguo Ding;Naofal Al-Dhahir;Jian Chen

Year: 2023 | Conference Paper |

A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks

Lu Lv;Hao Luo;Long Yang;Zhiguo Ding;Arumugam Nallanathan;Naofal Al-Dhahir;Jian Chen

2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
We investigate a reconfigurable intelligent surface (RIS)-aided wireless powered mobile edge computing (MEC) network, where a new RIS-aided hybrid non-orthogonal multiple access (NOMA) offloading scheme is proposed to improve the efficiency of both MEC offloading and energy harvesting. A joint optimization framework for the transmit power, time allocation, and RIS phase shifts is developed to mini...Show More

A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks

Lu Lv;Hao Luo;Long Yang;Zhiguo Ding;Arumugam Nallanathan;Naofal Al-Dhahir;Jian Chen

Year: 2023 | Conference Paper |

STARS Enabled Full-Space Integrated Sensing and Communications

Zheng Zhang;Yuanwei Liu;Mohsen Khalily;Mahtab Mirmohseni;Jian Chen;Long Yang

2023 International Conference on Ubiquitous Communication (Ucom)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
A simultaneously transmitting and reflecting surface (STARS) enabled integrated sensing and communications (ISAC) framework is proposed, where a novel bi-directional sensing-STARS architecture is devised to facilitate the full-space communication and sensing. Based on the proposed framework, a joint optimization problem is formulated, where the Cramér-Rao bound (CRB) for estimating the 2-dimension...Show More

STARS Enabled Full-Space Integrated Sensing and Communications

Zheng Zhang;Yuanwei Liu;Mohsen Khalily;Mahtab Mirmohseni;Jian Chen;Long Yang

Year: 2023 | Conference Paper |

Intelligent Omni-Surface Assisted Physical Layer Security Communication

Hengchang Wang;Jian Chen;Zheng Zhang;Junjie Yang;Long Yang

2023 International Conference on Ubiquitous Communication (Ucom)
Year: 2023 | Conference Paper |
This paper investigates the secrecy transmit power optimization problems for an Intelligent Omni-surface (IOS) aided communication system under energy-limited conditions. We formulate the power minimization problem based on the assumption that the Base Station (BS) has statistical channel state information (CSI) of the eavesdroppers, where the optimization problem is non-convex because of intertwi...Show More

Intelligent Omni-Surface Assisted Physical Layer Security Communication

Hengchang Wang;Jian Chen;Zheng Zhang;Junjie Yang;Long Yang

Year: 2023 | Conference Paper |

Rate-Aware User Pair Scheduling With Joint Power Allocation and Decoding Order Selection in NOMA Systems

Mengqi Yang;Jian Chen;Zhiguo Ding;Lu Lv;Naofal Al-Dhahir;Long Yang

IEEE Transactions on Communications
Year: 2023 | Volume: 71, Issue: 9 | Journal Article |
Cited by: Papers (4)
To enhance the outage performance of downlink non-orthogonal multiple access (NOMA) systems, we investigate opportunistic user pair scheduling (UPS) as well as the joint power allocation and decoding order selection (PA-DOS) for the scheduled user pair. Unlike most existing literature where the UPS and PA-DOS schemes are solely driven by channel conditions, we consider the impact of both the chann...Show More

Rate-Aware User Pair Scheduling With Joint Power Allocation and Decoding Order Selection in NOMA Systems

Mengqi Yang;Jian Chen;Zhiguo Ding;Lu Lv;Naofal Al-Dhahir;Long Yang

Year: 2023 | Volume: 71, Issue: 9 | Journal Article |

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