Industrial communication networks. Fieldbus specifications. Wireless systems for industrial automation: process control and related applications

2015 ◽  
Author(s):  
Muhammad Bello Abdullahi

Orthogonal Frequency Division Multiplexing (OFDM) is used to achieve multi-carrier signals and high- Speed data rate in free space. OFDM-based systems operate in the hostile multipath radio environment, which allows efficient sharing of limited resources. This research work was designed, developed and simulated an OFDM System using the basic blocks of Simulink in MATLAB/Simulink software, to support multi-carrier, high-speed data rates. This was achieved in backing of collection and review of high-quality research papers, which reported the latest research developments in OFDM communications networks, and its applications in future wireless systems. The research work significantly increases the speed of data rate signals, and many critical problems associated with the applications of OFDM technologies in future wireless systems are still looking for efficient solutions. This would overcome the global issues and challenges facing the limited bandwidth in wireless communication network.


2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Abolhassan Razminia ◽  
Dumitru Baleanu

This paper addresses a new approach for modeling of versatile controllers in industrial automation and process control systems such as pneumatic controllers. Some fractional order dynamical models are developed for pressure and pneumatic systems with bellows-nozzle-flapper configuration. In the light of fractional calculus, a fractional order derivative-derivative (FrDD) controller and integral-derivative (FrID) are remodeled. Numerical simulations illustrate the application of the obtained theoretical results in simple examples.


Author(s):  
Umar Farooq ◽  
Ghulam Mohammad Rather

Millimeter wave (MMW) communication is a key technology to support the high data rate requirements of next generation networks and cope up the spectrum scarcity and capacity limitations of current wireless systems and hence enable a plethora of applications. However, this technology is in its initial development stage, and there are various technical challenges in its practical implementation that need to be addressed before its successful deployment. This paper reviews the state of the art in MMW communications and provides in-depth detail of the basic propagation characteristics of MMWs in different operation scenarios. The paper also analyses the various technical challenges of MMW communication networks envisaged in its implementation and highlights the design choices proposed so far to address these challenges. Finally, some of the potential applications of MMW communications that may emerge in the near future are also discussed.


1985 ◽  
Vol 18 (1) ◽  
pp. 203-216
Author(s):  
M. Di Manzo ◽  
G. Menga ◽  
G. Neri ◽  
S. Rivoira ◽  
A. Serra ◽  
...  

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