Results 91 to 100 of about 13,289,717 (271)
Scientist deduced the existence of particles with faster-than-light speeds recently discovered by CERN [PDF]
, 2011 In this paper we present a short survey on Smarandache Hypothesis that there is no speed barrier in the universe and one can construct arbitrary speeds, hypothesis which has been partially confirmed by the recent CERN results of OPERA team led by Dr ...
Patrascu, Ion
core +1 more source
Bifunctional Catalysis Drives Efficient and Ethanol‐Producing Aqueous Zn‐CO2 Batteries
Advanced Materials, EarlyView.A unified bifunctional catalyst breaks the trade‐off between CO2 reduction and O2 evolution, delivering high efficiency, ethanol production, and long‐term stability in Zn‐CO2 batteries while revealing degradation pathways for next‐generation bifunctional electrocatalysts.
Divyani Gupta +9 more
wiley +1 more source
IEEE AccessThe adoption of one-bit analog-to-digital converters (ADCs) in wireless communication has become increasingly popular, owing to their potential to reduce power consumption. However, there is a decreased spectral efficiency (SE) associated with their use,
Metasebia Demissu Gemeda +3 more
doaj +1 more source
Applied Sciences, 2019 Faster-than-Nyquist (FTN) signal processing, which transmits signals faster than the Nyquist rate, is a representative method for improving throughput efficiency sacrificed performance degradation due to inter-symbol interference.
Chang-Uk Baek, Ji-Won Jung
doaj +1 more source
Advanced Materials, EarlyView.A green, external‐catalyst‐free route grows defect‐free covalent organic framework membranes directly on ion‐exchange supports using an alternating electric field and in situ‐generated acid. Through a self‐regulating, self‐healing mechanism, the membranes achieve near‐complete, ultra‐fast separation of monovalent ions such as Li+, Na+, and K+, offering
Mohammad Hossein Jandaghian +8 more
wiley +1 more source
IEEE Access, 2017 In this paper, we investigate the sequence estimation problem of binary and quadrature phase shift keying faster-than-Nyquist (FTN) signaling and propose two novel low-complexity sequence estimation techniques based on concepts of successive interference
Ebrahim Bedeer +2 more
doaj +1 more source
A Survey on Faster-Than-Nyquist Signaling
Hans Journal of Wireless Communications, 2016 在数字通信系统中，奈奎斯特准则指出，为了实现无码间干扰的传输，符号速率必须满足奈奎斯特准则。然而1975年Mazo发现在带限加性高斯白噪声信道中，当码元速率超过奈奎斯特速率在25%以内时，信号的归一化最小欧式距离并不会减小，并称为Faster-Than-Nyquist signaling (超奈奎斯特，FTN)。本文首先介绍FTN传输的发展历史，分析FTN系统的Mazo限，并对FTN传输以及奈奎斯特速率下的限制信道容量进行比较。从仿真结果可以看出，当脉冲存在过剩带宽时，FTN传输可以得到比奈奎斯特速率下更高的信道容量。 In digital communication system, the Nyquist criterion states that the symbol rate must ...
openaire +1 more source
Advanced Materials, EarlyView.A mechanochemically synthesized dual‐site electrocatalyst (RuNC@Fe1NC) accelerates alkaline hydrogen evolution via atomic‐level spatial decoupling. Oxophilic Fe single atoms effectively dissociate water, while adjacent Ru nanoclusters rapidly recombine hydrogen.
Jae‐Hoon Baek +9 more
wiley +1 more source
Advanced Materials, EarlyView.A novel selective laser sintering and graphitization (SLSG) 3D printing technology enables unibody fabrication of compacted insulating structures and conductive circuits in fluidic‐integrated wearable electronics through adaptive photonic modulation.
Li Zhang, Wing Cheung Mak
wiley +1 more source
Unique faster‐than‐Nyquist transceiver of the ACM system
IET Communications, 2018 The link adaptive transmission system chooses the optimum combinations of modulation order and code rate according to the characteristics of wireless channels to make use of the channel resources. To improve the spectral efficiency further, the authors apply the faster‐than‐Nyquist (FTN) signalling to the adaptive coding and modulation (ACM) system ...
Ke Wang 0010 +3 more
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