Explanipedia

Outage-Aware Sum Rate Maximization in Movable Antennas-Enabled Systems Open

Guojie Hu, Qingqing Wu, Minjian Zhao, Wei Chen, Zhenyu Xiao , et al. · 2025

In this paper, we investigate the movable antennas (MAs)-enabled multiple-input-single-output (MISO) systems, where the base station (BS) equipped with multiple MAs serves multiple single-antenna user. The delay-sensitive scenario is consi…

Ambiguity Function Analysis and Optimization of Frequency-Hopping MIMO Radar with Movable Antennas Open

Xiang Chen, Minjian Zhao, Min Li, Liyan Li, Min-Jian Zhao , et al. · 2025

In this paper, we propose a movable antenna (MA)-enabled frequency-hopping (FH) multiple-input multiple-output (MIMO) radar system and investigate its sensing resolution. Specifically, we derive the expression of the ambiguity function and…

Antenna Position and Beamforming Optimization for Movable Antenna Enabled ISAC: Optimal Solutions and Efficient Algorithms Open

L Chen, Minjian Zhao, Min-Jian Zhao, Rui Zhang · 2025

In this paper, we propose an integrated sensing and communication (ISAC) system enabled by movable antennas (MAs), which can dynamically adjust antenna positions to enhance both sensing and communication performance for future wireless net…

Separate Source Channel Coding Is Still What You Need: An LLM-based Rethinking Open

Tianqi Ren, Rongpeng Li, Minjian Zhao, Xianfu Chen, Guangyi Liu , et al. · 2025

Along with the proliferating research interest in Semantic Communication (SemCom), Joint Source Channel Coding (JSCC) has dominated the attention due to the widely assumed existence in efficiently delivering information semantics. Neverthe…

Exploiting Dynamic Sparsity for Near-Field Spatial Non-Stationary XL-MIMO Channel Tracking Open

Wei Liu, Minjian Zhao, G. Caire, Yik‐Chung Wu · 2024

This work considers a spatial non-stationary channel tracking problem in broadband extremely large-scale multiple-input-multiple-output (XL-MIMO) systems. In the case of spatial non-stationary, each scatterer has a certain visibility regio…

Joint Node Selection and Resource Allocation Optimization for Cooperative Sensing with a Shared Wireless Backhaul Open

Mingxin Chen, Minjian Zhao, An Liu, Min Li, Qingjiang Shi · 2024

In this paper, we consider a cooperative sensing framework in the context of future multi-functional network with both communication and sensing ability, where one base station (BS) serves as a sensing transmitter and several nearby BSs se…

Joint Visibility Region Detection and Channel Estimation for XL-MIMO Systems via Alternating MAP Open

Wenkang Xu, An Liu, Minjian Zhao · 2024

We investigate a joint visibility region (VR) detection and channel estimation problem in extremely large-scale multiple-input-multiple-output (XL-MIMO) systems, where near-field propagation and spatial non-stationary effects exist. In thi…

CSI Transfer From Sub-6G to mmWave: Reduced-Overhead Multi-User Hybrid Beamforming Open

Weicao Deng, Min Li, Minjian Zhao, Minjian Zhao, Osvaldo Simeone · 2024

Hybrid beamforming is vital in modern wireless systems, especially for massive MIMO and millimeter-wave (mmWave) deployments, offering efficient directional transmission with reduced hardware complexity. However, effective beamforming in m…

On-demand Doppler-offset beamforming with intelligent spatiotemporal metasurfaces Open

Xiaoyue Zhu, Chao Qian, Jie Zhang, Yuetian Jia, Yaxiong Xu , et al. · 2023

Recently, significant efforts have been devoted to guaranteeing high-quality communication services in fast-moving scenes, such as high-speed trains. The challenges lie in the Doppler effect that shifts the frequency of the transmitted sig…

Joint Location Sensing and Channel Estimation for IRS-Aided mmWave ISAC Systems Open

Zijian Chen, Minjian Zhao, Min Li, Fan Xu, Qingqing Wu , et al. · 2023

In this paper, we investigate a self-sensing intelligent reflecting surface (IRS) aided millimeter wave (mmWave) integrated sensing and communication (ISAC) system. Unlike the conventional purely passive IRS, the self-sensing IRS can effec…

Fast List Decoding of High-Rate Polar Codes Open

Yang Lu, Minjian Zhao, Ming Lei, Minjian Zhao · 2023

Due to the ability to provide superior error-correction performance, the successive cancellation list (SCL) algorithm is widely regarded as one of the most promising decoding algorithms for polar codes with short-to-moderate code lengths. …

A Stochastic Particle Variational Bayesian Inference Inspired Deep-Unfolding Network for Non-Convex Parameter Estimation Open

Zhixiang Hu, An Liu, Minjian Zhao · 2023

Future wireless networks are envisioned to provide ubiquitous sensing services, which also gives rise to a substantial demand for high-dimensional non-convex parameter estimation, i.e., the associated likelihood function is non-convex and …

Intelligent Reflecting Surface Aided Multi-Tier Hybrid Computing Open

Yapeng Zhao, Qingqing Wu, Guangji Chen, Wen Chen, Ruiqi Liu , et al. · 2023

The digital twin edge network (DITEN) aims to integrate mobile edge computing (MEC) and digital twin (DT) to provide real-time system configuration and flexible resource allocation for the sixth-generation network. This paper investigates …

Successive Linear Approximation VBI for Joint Sparse Signal Recovery and Dynamic Grid Parameters Estimation Open

Wenkang Xu, An Liu, Bingpeng Zhou, Minjian Zhao · 2023

For many practical applications in wireless communications, we need to recover a structured sparse signal from a linear observation model with dynamic grid parameters in the sensing matrix. Conventional expectation maximization (EM)-based …

Joint Scattering Environment Sensing and Channel Estimation Based on Non-stationary Markov Random Field Open

Wenkang Xu, Yongbo Xiao, An Liu, Minjian Zhao · 2023

This paper considers an integrated sensing and communication system, where some radar targets also serve as communication scatterers. A location domain channel modeling method is proposed based on the position of targets and scatterers in …

Joint Scattering Environment Sensing and Channel Estimation for Integrated Sensing and Communication Open

Wenkang Xu, Yongbo Xiao, An Liu, Minjian Zhao · 2023

This paper considers an integrated sensing and communication system, where some radar targets also serve as communication scatterers. A location domain channel modeling method is proposed based on the position of targets and scatterers in …

Secrecy Rate Maximization of RIS-assisted SWIPT Systems: A Two-Timescale Beamforming Design Approach Open

Minjian Zhao, Kaidi Xu, Yunlong Cai, Yong Niu, Lajos Hanzo · 2022

Reconfigurable intelligent surfaces (RISs) achieve high passive beamforming gains for signal enhancement or interference nulling by dynamically adjusting their reflection coefficients. Their employment is particularly appealing for improvi…

A Two-stage Multiband WiFi Sensing Scheme via Stochastic Particle-Based Variational Bayesian Inference Open

Zhixiang Hu, An Liu, Yubo Wan, Tony Xiao Han, Minjian Zhao · 2022

Multiband fusion enhances WiFi sensing by jointly utilizing signals from multiple non-contiguous frequency bands. However, in the multi-band WiFi sensing signal model, there are many local optimums in the associated likelihood function due…

Rethinking IoU-based Optimization for Single-stage 3D Object Detection Open

Hualian Sheng, Sijia Cai, Na Zhao, Bing Deng, Jianqiang Huang , et al. · 2022

Since Intersection-over-Union (IoU) based optimization maintains the consistency of the final IoU prediction metric and losses, it has been widely used in both regression and classification branches of single-stage 2D object detectors. Rec…

Latency Minimization for mmWave D2D Mobile Edge Computing Systems: Joint Task Allocation and Hybrid Beamforming Design Open

Yanzhen Liu, Yunlong Cai, An Liu, Minjian Zhao, Lajos Hanzo · 2022

Mobile edge computing (MEC) and millimeter wave (mmWave) communications are capable of significantly reducing the network's delay and enhancing its capacity. In this paper we investigate a mmWave and device-to-device (D2D) assisted MEC sys…

Fast Successive-Cancellation Decoding of Polar Codes with Sequence Nodes Open

Yang Lu, Minjian Zhao, Ming Lei, Minjian Zhao · 2022

Due to the sequential nature of the successive-cancellation (SC) algorithm, the decoding of polar codes suffers from significant decoding latencies. Fast SC decoding is able to speed up the SC decoding process, by implementing parallel dec…

Channel Tracking and Prediction for IRS-aided Wireless Communications Open

Yi Wei, Minjian Zhao, An Liu, Minjian Zhao · 2022

For intelligent reflecting surface (IRS)-aided wireless communications, channel estimation is essential and usually requires excessive channel training overhead when the number of IRS reflecting elements is large. The acquisition of accura…

A GF-3 SAR Image Dataset of Road Segmentation Open

Zengguo Sun, Minjian Zhao, Jia Bai · 2021

We constructed a GF-3 SAR image dataset based on road segmentation to boost the development of GF-3 synthetic aperture radar (SAR) image road segmentation technology and make GF-3 SAR images be applied to practice better. We selected 23 sc…

Channel Estimation for IRS-aided Multiuser Communications with Reduced Error Propagation Open

Yi Wei, Minjian Zhao, Minjian Zhao, Yunlong Cai · 2021

Intelligent reflecting surface (IRS) has emerged as a promising paradigm to improve the capacity and reliability of a wireless communication system by smartly reconfiguring the wireless propagation environment. To achieve the promising gai…

Two-Stage Stochastic Optimization Via Primal-Dual Decomposition and Deep Unrolling Open

An Liu, Rui Yang, Tony Q. S. Quek, Minjian Zhao · 2021

We consider a two-stage stochastic optimization problem, in which a long-term\noptimization variable is coupled with a set of short-term optimization\nvariables in both objective and constraint functions. Despite that two-stage\nstochastic…

Intelligent Reflecting Surface Aided Full-Duplex Communication: Passive Beamforming and Deployment Design Open

Yunlong Cai, Minjian Zhao, Kaidi Xu, Rui Zhang · 2020

This paper investigates the passive beamforming and deployment design for an intelligent reflecting surface (IRS) aided full-duplex (FD) wireless system, where an FD access point (AP) communicates with an uplink (UL) user and a downlink (D…

CCDC 2017109: Experimental Crystal Structure Determination Open

Zhen-Xing Bian, Yongzheng Zhang, Dan Tian, Xiuling Zhang, Lin‐Hua Xie , et al. · 2020

CCDC 2017108: Experimental Crystal Structure Determination Open

Zhen-Xing Bian, Yong‐Zheng Zhang, Dan Tian, Xiuling Zhang, Lin‐Hua Xie , et al. · 2020

Two-timescale Beamforming Optimization for Intelligent Reflecting Surface Aided Multiuser Communication with QoS Constraints Open

Minjian Zhao, An Liu, Yubo Wan, Rui Zhang · 2020

Intelligent reflecting surface (IRS) is an emerging technology that is able to reconfigure the wireless channel via tunable passive signal reflection and thereby enhance the spectral and energy efficiency of wireless networks cost-effectiv…

Intelligent Reflecting Surface Enhanced Wireless Networks: Two-Timescale Beamforming Optimization Open

Minjian Zhao, Qingqing Wu, Minjian Zhao, Rui Zhang · 2020

Intelligent reflecting surface (IRS) has drawn a lot of attention recently as\na promising new solution to achieve high spectral and energy efficiency for\nfuture wireless networks. By utilizing massive low-cost passive reflecting\nelement…

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