Large-capacity long-distance bidirectional wireless signal transmission at hybrid K- and W-band

2018 ◽  
Author(s):  
Xinying Li ◽  
Jianjun Yu
Keyword(s):  
Signal Transmission ◽  
Long Distance ◽  
Large Capacity ◽  
W Band ◽  
Wireless Signal

Research on robust adaptive sliding film fault-tolerant control under nonlinear distortion of signal transmission in amorphous flat air-to-ground wireless ad-hoc network system

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zhifang Wang ◽  
Jianguo Yu ◽  
Shangjing Lin
Keyword(s):  
Nonlinear Distortion ◽  
Ad Hoc ◽  
Fault Tolerant ◽  
Signal Transmission ◽  
Network System ◽  
Long Distance ◽  
Content Type ◽  
Wireless Signal ◽  
Robust Adaptive ◽  
Self Organizing

Purpose To solve the above problems and ensure the stability of the ad hoc network node topology in the process of wireless signal transmission, this paper aims to design a robust adaptive sliding film fault-tolerant controller under the nonlinear distortion of signal transmission in an amorphous flat air-to-ground wireless ad hoc network system. Design/methodology/approach This paper designs a robust adaptive sliding film fault-tolerant controller under the nonlinear distortion of signal transmission in an amorphous flat air-to-ground wireless ad hoc network system. Findings The simulation results show that the amorphous flat wireless self-organizing network system has good nonlinear distortion fault-tolerant correction ability under the feedback control of the designed controller, and the system has the asymptotically stable convergence ability; the test results show: the node topology of the self-organizing network structural stability is significantly improved, which provides a foundation for the subsequent realization of long-distance transmission of ad hoc network nodes. Research limitations/implications Because of the chosen research approach, the research results may lack generalizability. Therefore, researchers are encouraged to test the proposed propositions further. Originality/value The controller can extract the fault information caused by nonlinear distortion in the wireless signal transmission process, and at the same time, its feedback matrix K can gradually converge the generated wireless signal error to zero, to realize the stable transmission of the wireless signal.

Large Capacity Optical Wireless Signal Delivery at W-Band: OFDM or Single Carrier?

2016 ◽  
Author(s):  
Xinying Li ◽  
Jiangnan Xiao ◽  
Fan Li ◽  
Yuming Xu ◽  
Long Chen ◽  
...  
Keyword(s):  
Optical Wireless ◽  
Large Capacity ◽  
Single Carrier ◽  
W Band ◽  
Wireless Signal

scholarly journals Ion-water coupling controls class A GPCR signal transduction pathways

2020 ◽  
Author(s):  
Neil J. Thomson ◽  
Owen N. Vickery ◽  
Callum M. Ives ◽  
Ulrich Zachariae
Keyword(s):  
Binding Site ◽  
G Protein ◽  
Signal Transmission ◽  
Water Molecules ◽  
Long Distance ◽  
Protein Binding Region ◽  
Dynamics Simulations ◽  
Key Residues ◽  
Extracellular Sodium ◽  
Communication Pathway

G-protein-coupled receptors (GPCRs) transmit signals across the cell membrane, forming the largest family of membrane proteins in humans. Most GPCRs activate through an evolutionarily conserved mechanism, which involves reorientation of helices and key residues, rearrangement of a hydrogen bonding network mediated by water molecules, and the expulsion of a sodium ion from a protonatable binding site. However, how these components interplay to engage the signal effector binding site remains elusive. Here, we applied information theory to molecular dynamics simulations of pharmaceutically important GPCRs to trace concerted conformational variations across the receptors. We discovered a conserved communication pathway that includes protein residues and cofactors and enables the exchange of information between the extracellular sodium binding site and the intracellular G-protein binding region, coupling the most highly conserved protonatable residues at long distance. Reorientation of internal water molecules was found to be essential for signal transmission along this pathway. By inhibiting protonation, sodium decoupled this connectivity, identifying the ion as a master switch that determines the receptors’ ability to move towards active conformations.

Long-Distance Signal Transmission in Trees

2006 ◽  
pp. 333-349
Author(s):  
Stefano Mancuso ◽  
Sergio Mugnai
Keyword(s):  
Signal Transmission ◽  
Long Distance ◽  
Distance Signal

Recent progress in an ‘ultra-high speed, ultra-large capacity, ultra-long distance’ optical transmission system (Invited Paper)

2016 ◽  
Vol 14 (12) ◽  
pp. 120003-120007 ◽  
Author(s):  
Shaohua Yu Shaohua Yu ◽  
Ming Luo Ming Luo ◽  
Xiang Li Xiang Li ◽  
Rong Hu Rong Hu ◽  
Ying Qiu Ying Qiu ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Transmission ◽  
Recent Progress ◽  
Transmission System ◽  
Long Distance ◽  
Large Capacity ◽  
Ultra High Speed

Research on a simulating device for electric transmission characteristics of long-distance subsea umbilical cable

2020 ◽  
pp. 147509022092450
Author(s):  
Yufang Li ◽  
Honglin Zhao ◽  
Yongbiao Xu ◽  
Deguo Wang
Keyword(s):  
Voltage Drop ◽  
Low Cost ◽  
Signal Transmission ◽  
Transmission Characteristics ◽  
Electrical Transmission ◽  
Long Distance ◽  
The Real ◽  
Transmission Attenuation ◽  
Umbilical Cable ◽  
Attenuation Characteristics

Subsea umbilical cable is an important link to transmit power and signals in subsea production system, often lasts for tens of kilometers in deep-sea projects. It is expensive, bulky, and inconvenient to transport. In this article, a compact, low-cost umbilical cable electrical simulator is proposed, which can be equivalent to the real umbilical cable in power transmission characteristics and can adjust parameters in a certain range. By studying the electrical transmission characteristics of long umbilical cable, the calculation method of electrical transmission characteristics is determined. A simulation device for simulating the transmission characteristics of umbilical cable is designed, which can be used to simulate the umbilical cable diameter of 10 and 16 mm2. The voltage drop characteristics, signal transmission attenuation characteristics, and power carrier characteristics of the umbilical cable electrical simulation device are simulated and experimentally analyzed. The experimental results show that the voltage drop characteristics, signal transmission attenuation characteristics, and power carrier characteristics of the umbilical cable electrical simulator are in good agreement with the real umbilical cable. The simulation device of umbilical cable can well simulate the power and signal transmission characteristics of real umbilical cable.

Sign in / Sign up

Export Citation Format

Share Document