Results 51 to 60 of about 19,592,386 (260)

Data-derived iterative channel estimation with channel tracking for a mobile fourth generation wide area OFDM system [PDF]

, 2003
In this paper an iterative channel estimation technique for a mobile fourth generation coherent orthogonal frequency division multiplexing (OFDM) system is proposed. Coherent detection dictates that a per-subband estimate of the frequency response of the
Nix, AR, Dowler, ASH, McGeehan, JP, J. McGeehan, A. Nix, A. Dowler   +5 more
core   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

A Reliable IPv6 Access and Transmission Method for Spaceborne Platforms Without Physical Ethernet Interfaces

Aerospace
With the development of space-based cloud computing and on-orbit intelligent processing, higher requirements have been imposed on standardized network interconnection for spaceborne platforms.
Pengfei Zhang, Lianguo Wang, Enshi Li, Jianing Rao, Jianzhe Zhang, Miao Ma, Wenjie Zhao   +6 more
doaj   +1 more source

Third harmonic working based on the Smith–Purcell radiation in a closed structure

AIP Advances, 2020
Smith–Purcell radiation is well analyzed in an open structure; however, it is seldom studied in a closed structure. In a high order mode resonant system, the harmonics of the spoof surface plasmon in the subwavelength hole array will be transformed into ...
Bin Wang, Ping Zhang, Hailong Li, Liangjie Bi, Xiaosong Wang, Yilin Pan, Meiqin Liu, Yong Yin, Lin Meng   +8 more
doaj   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

Passive Environment-Assisted Quantum Communication with GKP States

Physical Review X
Bosonic pure-loss channel, which represents the process of photons decaying into a vacuum environment, has zero quantum capacity when the channel’s transmissivity is less than 50%.
Zhaoyou Wang, Liang Jiang
doaj   +1 more source

Numerical and Experimental Assessment of Elastomeric Vacuum Suction Cups for Robotic Waste-Sorting Applications

Applied Sciences
Robotic waste sorting requires end-effectors capable of handling objects with highly variable geometry, stiffness, surface condition and leakage characteristics.
Leszek Sławomir Litzbarski, Marek Żabczyński, Andrii Trush   +2 more
doaj   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

Advanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang, Jianxiang Zhao, Zhaoqi Chen, Hao Gong, Yinsen Yan, Junlei Tao, Yong Yang   +6 more
wiley   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

Advanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan, Jiafen Song, Jinglong Li, Jiangtao Xiong, Tao Yang   +4 more
wiley   +1 more source

Microfluidic Microwave Sensor for Detecting Saline in Biological Range

Sensors, 2019
A device for measuring biological small volume liquid samples in real time is appealing. One way to achieve this is by using a microwave sensor based on reflection measurement. A prototype sensor was manufactured from low cost printed circuit board (PCB)
Joni Kilpijärvi, Niina Halonen, Jari Juuti, Jari Hannu   +3 more
doaj   +1 more source