Xi Zhang

Meta-Learning-Based STAR-RIS for Dynamic Multi-Mobile-User Downlink Communications Over 6G Mobile Wireless Networks

Yujie Su, Fei Wang, Xi Zhang

Reconfigurable intelligent surface(RIS) has been widely envisioned as a key technique, which can enhance communicationquality of service(QoS) formobile users(MUs) by reconfiguring wireless propagation environments. Unlike traditional RISs that can only reflect signals,simultaneously transmitting and reflecting RIS(STAR-RIS) can extend half-space coverage to full-space …

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Exploiting Double-Bounce Paths in Snapshot Radio SLAM: Bounds, Algorithms, and Experiments

Xi Zhang, Yu Ge, Ossi Kaltiokallio, Musa Furkan Keskin et autres

Radio-based simultaneous localization and mapping (SLAM) has the potential to provide precise user equipment (UE) localization and environmental sensing capabilities by exploiting radio signals. Most existing approaches leverage line-of-sight (LoS) and single-bounce non-line-of-sight (NLoS) paths solely, while higher-order NLoS paths are treated …

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Constrained Semi-MDP Formulation and Perception-Enhanced Safe Policy Learning for Efficient Dynamic Task Scheduling of Data Centers

Yujian Ye, Jianxiong Hu, Heng Hu, Xi Zhang et autres

With the exponential growth of global data generation and the energy consumption of data centers (DCs), efficient dynamic task scheduling has become critical to optimize energy costs while ensuring the quality of the service. Model predictive control (MPC) method is burdened with …

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Dynamic data balancing strategy-based Xception-dual-channel LSTM model for laparoscopic cholecystectomy phase recognition

Mingzhou Liu, Jing Hu, Maogen Ge, Xi Zhang et autres

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Implementation Pathways for Beijing’s Garden-Style Block Construction: A Case Study of the Nanyuan Subdistrict

Xi Zhang, Yunfeng Xu, Xiong Li

Objective Guided by Beijing’s Garden City initiative and Xi Jinping’s thought on ecological civilization vision, this research identifies garden-style blocks as pivotal tools for implementing the city-wide essence area strategy at the block level. This research focuses on essence areas, where high …

Age at disease onset and risk of chronic kidney disease in patients with heterozygous disease-causing variants in COL4A3 and COL4A4

Ningning Hu, Lei Sun, Xuantong Dai, Ziyi Zhao et autres

ABSTRACT Background A key goal in managing patients with heterozygous disease-causing COL4A3 and COL4A4 (COL4A3/4) variants, affecting individuals spanning a broad age range, is to slow the development of chronic kidney disease (CKD). Whether age of onset is associated with the risk …

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Predicting Gasoline Transaction Events in Price-Commitment Scenarios: An Automated Framework

Boyang Li, Ziqi Wang, Yunzhe Qiu, Xi Zhang

Automatic prediction of consumer transactions in the gasoline market is critical for enabling targeted advertising interventions and improving retailer profitability. However, the absence of daily gasoline consumption data at the consumer poses significant challenges in accurately assessing consumer tank levels and predicting …

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Application of D 2 O Isotope Tracing Technique for SOC Package Failure Analysis

Liao Jinzhi Lois, Bisheng Wang, Xi Zhang, Lei Zhu et autres

In this study, a System-on-a-chip (SoC) package encountered failure during the Highly Accelerated Stress Test (HAST) test. Delamination was observed between the die and the underfill. It is suspected moisture penetrated through the underfill and substrate interface and caused this delamination during …

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LLMs are Introvert

Litian Zhang, Xiaoming Zhang, Bingyu Yan, Ziyi Zhou et autres

The exponential growth of social media and generative AI has transformed information dissemination, fostering connectivity but also accelerating the spread of misinformation. Understanding information propagation dynamics and developing effective control strategies is essential to mitigate harmful content. Traditional models, such as SIR, …

ISAC-Enabled Statistical-QoS Provisioning for mURLLC over Massive MIMO Mobile Networks Using FBC

Xi Zhang, Qixuan Zhu, H. Vincent Poor

Integrated sensing and communications (ISAC) has been proposed to significantly improve the performance of applications through highly-efficient spectrum/hardware sharing between channel-sensing and data-communications. However, how to apply the ISAC technique to accurately sense and estimate the wireless channel state while transmitting the …

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Robust and Efficient Bayesian Approach for Snapshot Radio Slam

Xi Zhang, Ossi Kaltiokallio, Ge Yu, Henk Wymeersch et autres

Radio-based simultaneous localization and mapping (SLAM) has the potential to provide precise localization and environmental sensing capabilities using millimeter wave (mmWave) signals. In this paper, we propose methods that address the robustness and computational complexity issues of existing bistatic snapshot radio SLAM …

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Statistical Security-QoS Guaranteed mURLLC Over 6G Massive-MIMO Mobile Wireless Networks

Xi Zhang, Qixuan Zhu

Guaranteeing massive ultra-reliable and low-latency communications (mURLLC) for 6 G wireless networks is of capital importance in both academia and industry. However, how to satisfy the security requirement while ensuring both the delayand error-rate-bounded quality-of-service (QoS) for mURLLC in 6G has not …

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