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Posts
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portfolio
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publications
[TWC] Spinal codes over fading channel: Error probability analysis and encoding structure improvement
Aimin Li, Shaohua Wu, Jian Jiao, Ning Zhang, and Qinyu Zhang, in IEEE Transactions on Wireless Communications, 2021.
An approximate frame error rate (FER) upper bound for Spinal codes over the Rayleigh fading channel in the finite block length (FBL) regime is derived and an improved encoding structure, named self-concatenation structure, is proposed to reduce the FER of Spinal code.
[NL] A Weighted Graph-Based Handover Strategy for Aeronautical Traffic in LEO SatCom Networks
Xiyu Lv, Shaohua Wu, Aimin Li, Jian Jiao, Ning Zhang, and Qinyu Zhang, in IEEE Networking Letters, 2022.
This paper analyzes tight upper bounds on the BLER of Spinal codes over fading channels in the FBL regime.
[TWC] Minimizing Age-of-Information in HARQ-CC Aided NOMA Systems
Shaohua Wu, Zhihong Deng, Aimin Li, Jian Jiao, Ning Zhang, and Qinyu Zhang, IEEE Transactions on Wireless Communications, 2022.
This paper examines the timeliness performance of a downlink NOMA wireless communication system. An adaptive transmission policy under HARQ-CC-aided NOMA is proposed. A low-complexity near-AoI-optimal policy is also discussed.
[TCOM] Tight Upper Bounds on the BLER of Spinal codes over the AWGN Channel
Aimin Li, Shaohua Wu, Xiaomeng Chen, and Sumei Sun, IEEE Transactions on Communications (Minor Revision), 2024.
This paper establishes tight upper bounds on the block error rate (BLER) of Spinal codes. The derived bounds are tighter than existing results relying on 1965 Gallager random coding bound.
[TCOM] Analysis and Optimization of the HARQ-Based Spinal Coded Timely Status Update System
Siqi Meng, Shaohua Wu, Aimin Li, Jian Jiao, Ning Zhang, and Qinyu Zhang, in IEEE Transactions on Communications, 2024.
This paper analyzes the Age of Information (AoI) of Spinal codes. The AoI-oriented block assignment design for rateless Spinal codes is proposed in this paper.
[TCOM] Age of Information With Hybrid-ARQ: A Unified Explicit Result
Aimin Li, Shaohua Wu, Jian Jiao, Ning Zhang, and Qinyu Zhang, in IEEE Transactions on Communications, 2022.
This paper analyzes the average Age of Information for reactive HARQ and proactive HARQ. Different types of delay are considered. Theoretical results show that proactive HARQ draws its strength from both age performance and system robustness.
[TVT] Partial Self-Concatenation Structure and Performance Analysis of Spinal Codes Over Rayleigh Fading Channel
Siqi Meng, Shaohua Wu, Aimin Li, Jian Jiao, Ning Zhang, and Qinyu Zhang, in IEEE Transactions on Vehicular Technology, 2022.
This paper analyzes and optimizes the average AoII under the FBL regime.
[ISIT] Tight Upper Bounds on the Error Probability of Spinal Codes over Fading Channels
Xiaomeng Cheng, Aimin Li(co-first), and Shaohua Wu, in IEEE International Symposium on Information Theory (IEEE ISIT), 2023.
This paper analyzes tight upper bounds on the BLER of Spinal codes over fading channels in the FBL regime.
[JSAIT] Toward Goal-Oriented Semantic Communications: AoII Analysis of Coded Status Update System Under FBL Regime
Siqi Meng, Shaohua Wu, Aimin Li, and Qinyu Zhang, in IEEE Journal on Selected Area of Information Theory, 2023.
This paper analyzes and optimizes the average AoII under the FBL regime.
[NETM] Effectiveness-Oriented SAGSIN: Unveiling a Unified Metric and a Comprehensive Framework
Siqi Meng, Shaohua Wu, Hanyu Wu, Aimin Li, and Qinyu Zhang, in IEEE Network Magazine, 2024.
This paper examines the timeliness performance of a downlink NOMA wireless communication system. An adaptive transmission policy under HARQ-CC-aided NOMA is proposed. A low-complexity near-AoI-optimal policy is also discussed.
[TCOM] Goal-Oriented Tensor: Beyond Age of Information Towards Semantics-Empowered Goal-Oriented Communications
Aimin Li, Shaohua Wu, Sumei Sun, and Jie Cao, in IEEE Transactions on Communications, 2024.
This paper proposes a new unified metric, named Goal-oriented Tensor (GoT) to characterize the effectiveness of communications. We formulate a two-agent Decentralized Partially Observable Markov Decision Process (Dec-POMDP) problem to conjointly deduce the optimal sampling policy and remote decision-making policy.
[WCM] Towards goal-oriented semantic communications: New metrics, open challenges, and future research directions
Aimin Li, Shaohua Wu, Siqi Meng, Rongxing Lu, Sumei Sun, and Qinyu Zhang, in IEEE Wireless Communications (Accepted), 2024.
This paper reviews three avenues of goal-oriented semantic communications. Some potential challenges and directions are also discussed in this paper.
talks
teaching
Communication Theory (Undergraduate Course)
Undergraduate course, Harbin Institute of Technology, Department of Electronic Engineering, 2021
Teaching Assistant with Prof. Shaohua Wu.
Information Theory
Graduate Cource, Harbin Institute of Technology, Department of Electronic Engineering, 2022
Teaching Assistant with Prof. Shaohua Wu.