Results 41 to 50 of about 996,599 (191)

Tuning Local Modulus at Liquid Metal‐Polymer Interfaces Regulates Electrocaloric Effect in Ferroelectric Nanocomposites

Advanced Electronic Materials, EarlyView.
Liquid metal nanoparticles create mechanically compliant polymer interfaces that facilitate reversible dipolar reorientation under electric fields, whereas rigid interfaces impose stronger local constraints. This soft–rigid interface comparison reveals local interfacial modulus as a key parameter for tuning electrocaloric entropy change in ...
Tian Yao, Shanyu Zheng, Binzhou Sun, Zhenhua Ma, Feiyu Zhang, Lu Yu, Qiang Li, Ruhong Luo, Feihong Du, Yifan Zhao, Yezhan Lin, Chunyu Wang, Xin Chen, Shi‐Yang Tang, Tiannan Yang, Xiaoshi Qian   +15 more
wiley   +1 more source

Downlink Massive MU-MIMO with Successively-Regularized Zero Forcing Precoding [PDF]

, 2022
In this letter, we consider linear precoding for downlink massive multi-user (MU) multiple-input multiple-output (MIMO) systems. We propose the novel successively-regularized zero forcing (SRZF) precoding, which exploits successive null spaces of the ...
Krishnamoorthy, Aravindh, Schober, Robert   +1 more
core   +1 more source

Spectral Efficiency of Network-Assisted Full-Duplex for Cell-Free Massive MIMO System Under Pilot Contamination

IEEE Access, 2021
A cell-free massive multiple-input multiple-output (MIMO) network-assisted full-duplex (NAFD) system has been proposed to satisfy the exploding demand of higher data transmission speed and more efficient communication.
Yanfeng Hu, Hongwu Ge, Haidong Wang, Dongming Wang   +3 more
doaj   +1 more source

Patient‐Mounted Neuro Optical Coherence Tomography for Targeted Minimally Invasive Micro‐Resolution Volumetric Imaging in Brain In Vivo

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Herein, a patient‐mounted neuro optical coherence tomography system that integrates a 5 degrees‐of‐freedom skull‐mounted robot (Skullbot) with a 0.6 mm neuroendoscope for targeted, minimally invasive deep brain imaging, is developed. The system offers high‐resolution imaging with precise deployment, demonstrated through successful tumor imaging in a ...
Chao Xu, Zhiwei Fang, Huxin Gao, Tinghua Zhang, Tao Zhang, Peng Liu, Hongliang Ren, Wu Yuan   +7 more
wiley   +1 more source

Weighted Sum Rate Maximization for Zero-forcing Methods with General Linear Covariance Constraints [PDF]

, 2018
In this paper, an efficient approach for weighted sum rate maximization (WSRMax) for zero-forcing(ZF)methods with general linear transmit covariance constraints (LTCCs) is proposed.
Claussen, Holger, Thuy M. Pham, Ronan Farrell, Mark F. Flanagan, Tran, Le-Nam, Farrell, Ronan, Le-Nam Tran, Holger Claussen, Pham, Thuy M., Flanagan, Mark   +9 more
core   +3 more sources

Numerical simulation study on the evolution of the temperature field and frozen wall in fractured rock mass

Deep Underground Science and Engineering, EarlyView.
The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang, Tingting Luo, Tao Zhang, Tao Han, Xiaodong Zhao, Haipeng Li, Yanfei Ma, Faxing Zhang, Madhusudhan Bangalore Narasimha Murthy, Weihao Yang   +9 more
wiley   +1 more source

Analisa Performansi Multiuser MIMO OFDM Zero Forcing Beamforming [PDF]

, 2019
Zero Forcing Beamforming merupakan salah satu metode precoding yang dapat diterapkan pada Multiuser MIMO OFDM. Sistem precoding ini merupakan teknik untuk menghilangkan interferensi yang terjadi antar pengguna (user) sehingga data yang diterima user ...
Asdira, Isky Fihafny
core  

A Review of Grain Boundaries: Formation Mechanism, Synthesis Strategy, and Application in Electrocatalysis

EcoEnergy, EarlyView.
An overview of grain boundary engineering in the field of electrocatalysis. ABSTRACT Key electrocatalytic reactions such as HER, OER, ORR, CO2RR, and NRR offer promising routes for storing renewable energy as chemical fuels. However, their widespread application is constrained due to the lack of highly active and stable catalysts. Grain boundaries (GBs)
Jingyu Gao, Fengming Zhou, Xinying Li, Ying Deng, Zexing Wu, Siyuan Feng, Yujing Zhu, Dan Zhang, Zhenyu Xiao   +8 more
wiley   +1 more source

Modulus Zero-Forcing Detection for MIMO Channels

, 2018
We propose a modulus based zero-forcing (MZF) detector for multi-input multi-output (MIMO) channels. Traditionally, a ZF detector nulls out interference from other layers when detecting a certain layer. While this is conceptually simple, it can result in
Fredrik Rusek, Rusek, Fredrik, Hu, Sha, Sha Hu   +3 more
core   +1 more source

COMPARISON BETWEEN MLD AND ZF ALGORITHMS FOR MIMO WIRELESS SYSTEM AT RAYLEIGH CHANNEL

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2018
In this paper, the performance of the Multiple Input Multiple Output (MIMO) technique evaluated in term of Bit Error Rate (BER) with respect to Signal to Noise Ratio (SNR) by using Binary Phase Shift Keying (BPSK) modulation for two algorithms Maximum ...
Mohannad A. Al-Ja'afari, Saif H. Abdulwahed, Ameer H. Ali   +2 more
doaj   +1 more source