Results 71 to 80 of about 119,266 (304)

Bit error rate analysis model of M-APSK based on total probability formula

Tongxin xuebao
To efficiently evaluate the performance of M-APSK modulation scheme over an additive white Gaussian noise channel, a theoretical bit error rate analysis model was proposed based on total probability formula.
HUAN Hao, REN Kexue
doaj   +2 more sources

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Space-time decision feedback equalisation using a minimum bit error rate design for single-input multi-output channels

, 2007
This contribution proposes a minimum bit error rate (MBER) decision feedback equaliser (DFE) designed for single-input multiple-output (SIMO) systems employing a quadrature phase shift keying (QPSK) modulation scheme. It is shown that this MBER design is
Shi, Y., Wolfgang, A., Hanzo, L., Chen, S.   +3 more
core  

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Accurate BER Analysis of Asynchronous DS-CDMA Systems in Ricean Channels [PDF]

, 2006
The accurate Bit Error Rate (BER) calculation of an asynchronous Ricean-faded DS-CDMA system using random spreading sequences and BPSK modulation is studied in this paper.
Liu, X., Hanzo, L, Lajos Hanzo, Xiang Liu   +3 more
core   +1 more source

MIMO–OFDM System Analysis and Achievement

Guidance, Navigation and Control
Multi-Input–Multi-Output (MIMO) technology has already become crucial in modern communication study, but the needs of anti-interference capability and spectral efficiency are always growing, which poses a significant challenge in future development.
Zhijian Lin
doaj   +1 more source

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Bit Error Rate Performance on Passive Alignment in Free Space Optical Links Using Large Core Fibers

, 2018
A 20-meter free-space optical link (FSOL) is proposed for data transmission between external ISS payload sites and the main cabin at a target rate of 10 Gbps (gigabits per second). Motion between a payload site and the main cabin is predicted to cause up
Bryan L. Schoenholz, Tedder, Sarah A., Sarah A. Tedder, Tedder, Sarah, Millican, Patrick, Berkson, Joel, Patrick Millican, Schoenholz, Bryan L., Joel Berkson, Schoenholz, Bryan   +9 more
core   +1 more source

Ｒesearch on Timing Synchronization Algorithm for Optical Signal Ｒeceiving

Journal of Harbin University of Science and Technology, 2017
In view of the characteristics of VLC and OFDM signal modulation，this paper proposes，on the basis of the traditional algorithm，improvements from two aspects: the timing measure function and the training sequence structure． Using the principle of ...
WANG Hong-min, CHEN Yang, LIU Zhen-zhou, WANG Yu, XUE Ping   +4 more
doaj   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source