no code implementations • 13 Jun 2024 • Yining Wang, Wanli Ni, Wenqiang Yi, Xiaodong Xu, Ping Zhang, Arumugam Nallanathan
Simulation results verify the superiority of the proposed FedCL framework compared to other distributed learning benchmarks in terms of task performance and robustness under different numbers of clients and channel conditions, especially in low signal-to-noise ratio and highly heterogeneous data scenarios.
no code implementations • 25 Sep 2022 • Zhixiong Chen, Wenqiang Yi, Yuanwei Liu, Arumugam Nallanathan
Inspired by this, we define a new objective function, i. e., the weighted scheduled data sample volume, to transform the inexplicit global loss minimization problem into a tractable one for device scheduling, bandwidth allocation, and power control.
no code implementations • 1 Sep 2022 • Xinyu Gao, Wenqiang Yi, Yuanwei Liu, Jianhua Zhang, Ping Zhang
Moreover, in order to improve the performance of the MO-PPO algorithm, two update strategies, i. e., action-value-based update strategy (AVUS) and loss function-based update strategy (LFUS), are investigated.
no code implementations • 15 Aug 2022 • Zhixiong Chen, Wenqiang Yi, Atm S. Alam, Arumugam Nallanathan
To this end, this work considers dynamic task software caching at the MEC server to assist users' task execution.
no code implementations • 3 May 2022 • Xinyu Gao, Xidong Mu, Wenqiang Yi, Yuanwei Liu
The goal is to maximize the sum-rate of whole trajectories for the multi-robot system by jointly optimizing trajectories and NOMA decoding orders of robots, phase-shift coefficients of the RIS, and the power allocation of the AP, subject to predicted initial and final positions of robots and the quality of service (QoS) of each robot.
no code implementations • 20 Apr 2022 • Zhixiong Chen, Wenqiang Yi, Arumugam Nallanathan, Geoffrey Ye Li
On this basis, we maximize the scheduled data size to minimize the global loss function through jointly optimize the device scheduling, bandwidth allocation, computation and communication time division policies with the assistance of Lyapunov optimization.
no code implementations • 13 Apr 2022 • Xinyu Gao, Wenqiang Yi, Alexandros Agapitos, Hao Wang, Yuanwei Liu
Coverage and capacity are the important metrics for performance evaluation in wireless networks, while the coverage and capacity have several conflicting relationships, e. g. high transmit power contributes to large coverage but high inter-cell interference reduces the capacity performance.
no code implementations • 3 Mar 2021 • Chao Zhang, Wenqiang Yi, Yuanwei Liu, Qiang Wang
Numerical results indicate that 1) although the interference from other cells is enhanced via the RISs, the performance of the RIS-aided user still enhances since the channel quality is strengthened more obviously; and 2) the SIC order can be altered by employing the RISs since the RISs improve the channel quality of the aided user.
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