195 citations · 582 across the 42 of their papers we have counts for
27 papers · 1 filter
Learning to Code on Graphs for Topological Interference Management
Zhiwei Shan, Xinping Yi, Han Yu +2
The state-of-the-art coding schemes for topological interference management (TIM) problems are usually handcrafted for specific families of network topologies, relying critically o…
Quantized Phase Alignment by Discrete Phase Shifts for Reconfigurable Intelligent Surface-Assisted Communication Systems
Jian Sang, Jifeng Lan, Mingyong Zhou +5
Reconfigurable intelligent surface (RIS) has aroused a surge of interest in recent years. In this paper, we investigate the joint phase alignment and phase quantization on discrete…
Near-Field Wideband Extremely Large-scale MIMO Transmission with Holographic Metasurface Antennas
Jie Xu, Li You, George C. Alexandropoulos +3
Extremely large-scale multiple-input multiple-output (XL-MIMO) is the development trend of future wireless communications. However, the extremely large-scale antenna array could br…
Topological Pilot Assignment in Large-Scale Distributed MIMO Networks
Han Yu, Xinping Yi, Giuseppe Caire
We consider the pilot assignment problem in large-scale distributed multi-input multi-output (MIMO) networks, where a large number of remote radio head (RRH) antennas are randomly…
Downlink Precoding for DP-UPA FDD Massive MIMO via Multi-Dimensional Active Channel Sparsification
Han Yu, Xinping Yi, Giuseppe Caire
In this paper, we consider user selection and downlink precoding for an over-loaded single-cell massive multiple-input multiple-output (MIMO) system in frequency division duplexing…
Topological Interference Management with Adversarial Topology Perturbation: An Algorithmic Perspective
Ya-Chun Liang, Chung-Shou Liao, Xinping Yi
In this paper, we consider the topological interference management (TIM) problem in a dynamic setting, where an adversary perturbs network topology to prevent the exploitation of s…
Dual-Polarized FDD Massive MIMO: A Comprehensive Framework
Mahdi Barzegar Khalilsarai, Tianyu Yang, Saeid Haghighatshoar +2
We propose a comprehensive scheme for realizing a massive multiple-input multiple-output (MIMO) system with dual-polarized antennas in frequency division duplexing (FDD) mode. Empl…
Robust Precoding in Massive MIMO: A Deep Learning Approach
Junchao Shi, Wenjin Wang, Xinping Yi +2
In this paper, we consider massive multiple-input-multiple-output (MIMO) communication systems with a uniform planar array (UPA) at the base station (BS) and investigate the downli…
Energy Efficiency Optimization for Downlink Massive MIMO With Statistical CSIT
Li You, Jiayuan Xiong, Xinping Yi +3
We investigate energy efficiency (EE) optimization for single-cell massive multiple-input multiple-output (MIMO) downlink transmission with only statistical channel state informati…
On the Optimality of Treating Inter-Cell Interference as Noise: Downlink Cellular Networks and Uplink-Downlink Duality
Hamdi Joudeh, Xinping Yi, Bruno Clerckx +1
We consider the information-theoretic optimality of treating inter-cell interference as noise (multi-cell TIN) in downlink cellular networks. We focus on scenarios modeled by the G…
On Multi-Cell Uplink-Downlink Duality with Treating Inter-Cell Interference as Noise
Hamdi Joudeh, Xinping Yi, Bruno Clerckx
We consider the information-theoretic optimality of treating inter-cell interference as noise in downlink cellular networks modeled as Gaussian interfering broadcast channels. Esta…
Opportunistic Treating Interference as Noise
Xinping Yi, Hua Sun
We consider a -user interference network with states, where each transmitter has messages and over State , Receiver wishes to decode the first $π_k(m) \in \{1,2,\…
FDD Massive MIMO via UL/DL Channel Covariance Extrapolation and Active Channel Sparsification
Mahdi Barzegar Khalilsarai, Saeid Haghighatshoar, Xinping Yi +1
We propose a novel method for massive Multiple-Input Multiple-Output (massive MIMO) in Frequency Division Duplexing (FDD) systems. Due to the large frequency separation between Upl…
FDD Massive MIMO: Efficient Downlink Probing and Uplink Feedback via Active Channel Sparsification
Mahdi Barzegar Khalilsarai, Saeid Haghighatshoar, Xinping Yi +1
In this paper, we propose a novel method for efficient implementation of a massive Multiple-Input Multiple-Output (massive MIMO) system with Frequency Division Duplexing (FDD) oper…
Topological Interference Management with Decoded Message Passing
Xinping Yi, Giuseppe Caire
The topological interference management (TIM) problem studies partially-connected interference networks with no channel state information except for the network topology (i.e., con…
The Optimality of Partial Clique Covering for Index Coding
Xinping Yi, Giuseppe Caire
Partial clique covering is one of the most basic coding schemes for index coding problems, generalizing clique and cycle covering on the side information digraph and further reduci…
Optimality of Treating Interference as Noise: A Combinatorial Perspective
Xinping Yi, Giuseppe Caire
For single-antenna Gaussian interference channels, we re-formulate the problem of determining the Generalized Degrees of Freedom (GDoF) region achievable by treating interference a…
TDMA is Optimal for All-unicast DoF Region of TIM if and only if Topology is Chordal Bipartite
Xinping Yi, Hua Sun, Syed A. Jafar +1
The main result of this work is that an orthogonal access scheme such as TDMA achieves the all-unicast degrees of freedom (DoF) region of the topological interference management (T…
Topological Interference Management with Transmitter Cooperation
Xinping Yi, David Gesbert
Interference networks with no channel state information at the transmitter (CSIT) except for the knowledge of the connectivity graph have been recently studied under the topologica…
On the Degrees of Freedom of the K-User Time Correlated Broadcast Channel with Delayed CSIT
Paul de Kerret, Xinping Yi, David Gesbert
The Degrees of Freedom (DoF) of a K-User MISO Broadcast Channel (BC) is studied when the Transmitter (TX) has access to a delayed channel estimate in addition to an imperfect estim…
The Degrees of Freedom Region of Temporally-Correlated MIMO Networks with Delayed CSIT
Xinping Yi, Sheng Yang, David Gesbert +1
We consider the temporally-correlated Multiple-Input Multiple-Output (MIMO) broadcast channels (BC) and interference channels (IC) where the transmitter(s) has/have (i) delayed cha…
The DoF of Network MIMO with Backhaul Delays
Xinping Yi, Paul de Kerret, David Gesbert
We consider the problem of downlink precoding for Network (multi-cell) MIMO networks where Transmitters (TXs) are provided with imperfect Channel State Information (CSI). Specifica…
Precoding Methods for MISO Broadcast Channel with Delayed CSIT
Xinping Yi, David Gesbert
Recent information theoretic results suggest that precoding on the multi-user downlink MIMO channel with delayed channel state information at the transmitter (CSIT) could lead to d…
The DoF Region of the Multiple-Antenna Time Correlated Interference Channel with Delayed CSIT
Xinping Yi, David Gesbert, Sheng Yang +1
We consider the time-correlated multiple-antenna interference channel where the transmitters have (i) delayed channel state information (CSI) obtained from a latency-prone feedback…