scholarly journals Electromagnetic Effective Degree of Freedom of a MIMO System in Free Space

2021 ◽  
pp. 1-1
Author(s):  
Shuai S. A. Yuan ◽  
Zi He ◽  
Xiaoming Chen ◽  
Chongwen Huang ◽  
Wei E.I. Sha
Keyword(s):  
Free Space ◽  
Mimo System ◽  
Degree Of Freedom ◽  
Effective Degree

Hybrid Position/Force Control for a RRR 3-DoF Manipulator

2011 ◽  
Vol 48-49 ◽  
pp. 589-592 ◽  
Author(s):  
Shi Xiang Tian ◽  
Sheng Ze Wang
Keyword(s):  
Force Control ◽  
Free Space ◽  
High Performance ◽  
Degree Of Freedom ◽  
End Effector ◽  
Robot Trajectory ◽  
Simulation Results ◽  
Trajectory Following ◽  
Three Degree Of Freedom

In this paper, a novel hybrid position/force controller has been proposed for a three degree of freedom (3-DOF) of robot trajectory following that is required to switch between position and force control. The whole controller consists of two components: a positional controller and a force controller. Depending on whether the end-effector is in free space or in contact with the environments during work, the two subcontrollers run simultaneously to guide the manipulator tracking in free space and constraint environments. After the principle and stability of the controller are briefly analyzed, simulation results verify that the proposed controller attains a high performance.

CTH07-5: Free Space Optical MIMO System Using an Optical Pre-Amplifier

2006 ◽  
Author(s):  
Qianling Cao ◽  
Maite Brandt-Pearce ◽  
Stephen G. Wilson
Keyword(s):  
Free Space ◽  
Mimo System ◽  
Free Space Optical

scholarly journals Performance Improvement of FSO Communication System using MIMO Technique

2019 ◽  
Vol 8 (10) ◽  
pp. 3470-3472
Keyword(s):  
Performance Improvement ◽  
Bit Error Rate ◽  
Communication System ◽  
Free Space ◽  
Mimo System ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Q Factor ◽  
Free Space Optical ◽  
Space Communication

In proposed simulation model, the effect of different MIMO system has been analyzed on performance of free space optical (FSO) system concealed by various climatic conditions like clear, haze and fog. FSO is a free space communication system where space acts as medium between transceivers which provides a strong and efficient method for transmission and reception of information. The effect of different weather conditions has been investigated for range of 1 and 2 km at frequency 193.1 GHz. The proposed MIMO-FSO simulation system has been analyzed for different parameters like Q factor, height of eye, power received and bit error rate. The designed 4X4 MIMO-FSO system provides better results as compared to the 2X2MIMO and SISO-FSO system.

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