no code implementations • 24 Oct 2023 • Rujing Xiong, Ke Yin, Tiebin Mi, Jialong Lu, Kai Wan, Robert Caiming Qiu
This framework focuses on designing explicit beamforming functionalities through optimization.
no code implementations • 27 Apr 2023 • Rujing Xiong, Jianan Zhang, Fuhai Wang, Zhengyu Wang, Xiang Ren, Junshuo Liu, Jialong Lu, Kai Wan, Tiebin Mi, Robert Caiming Qiu
The prototype undergoes rigorous empirical evaluation, encompassing multi-hop RIS signal amplification, image reconstruction, and real-world indoor signal coverage experiments.
no code implementations • 8 Nov 2022 • Rujing Xiong, Xuihui Dong, Tiebin Mi, Kai Wan, Robert Caiming Qiu
Leveraging the inherent structure of this problem, we propose an efficient divide-and-sort (DaS) search algorithm to reach the global optimality for the maximization problem.
no code implementations • 2 Feb 2021 • Xiang Zhang, Kai Wan, Hua Sun, Mingyue Ji, Giuseppe Caire
This paper considers the MuPIR problem with two messages, arbitrary number of users and databases where uncoded prefetching is assumed, i. e., the users directly copy some bits from the library as their cached contents.
no code implementations • 1 Feb 2021 • Kai Wan, Hua Sun, Mingyue Ji, Giuseppe Caire
Then we focus on the case where the computation cost of each server is minimum and aim to minimize the size of the randomness variable introduced in the system while achieving the optimal communication cost.
Information Theory Information Theory
no code implementations • 28 Dec 2020 • Kai Wan, Hua Sun, Mingyue Ji, Daniela Tuninetti, Giuseppe Caire
Coded Caching, proposed by Maddah-Ali and Niesen (MAN), has the potential to reduce network traffic by pre-storing content in the users' local memories when the network is underutilized and transmitting coded multicast messages that simultaneously benefit many users at once during peak-hour times.
Information Theory Information Theory
no code implementations • 8 Dec 2020 • Minquan Cheng, Dequan Liang, Kai Wan, Mingming Zhang, Giuseppe Caire
Applying the transformation approach to the well-known shared-link coded caching scheme proposed by Maddah-Ali and Niesen, we obtain a new multiaccess coded caching scheme that achieves the same load as the scheme of Hachem et al. but for any system parameters.
Information Theory Information Theory
no code implementations • 13 Oct 2020 • Xiang Zhang, Kai Wan, Hua Sun, Mingyue Ji, Giuseppe Caire
Based on the proposed novel approach of \emph{cache-aided interference alignment (CIA)}, first, for the MuPIR problem with $K=2$ messages, $K_{\rm u}=2$ users and $N\ge 2$ databases, we propose achievable retrieval schemes for both uncoded and general cache placement.