Performance Analysis of OWC Using NOP Technique

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Ghanendra Kumar ◽  
Chakresh Kumar
Keyword(s):  
Performance Analysis ◽  
Statistical Methods ◽  
Expectation Maximization ◽  
Communication System ◽  
Review Paper ◽  
Temporal Correlation ◽  
Step Algorithm

AbstractIn this review paper, the turbulence of the channel through which the light photons are scattered has been modeled. The channel here is essentially the lower lithosphere. A two-step algorithm called the Method of Expectation–Maximization has been used for the analysis and calculations of the parameters involved. Statistical methods have been used to check temporal correlation and the tolerance of the communication system involved. The simulations and results have been presented and the conclusions show decent performance. The approaches have been applied to the UV scattering channel experiment, NLOS experiment and for link gain at a distance of 0.5 km.

Statistics and parallaxes

1978 ◽  
Vol 48 ◽  
pp. 7-29
Author(s):  
T. E. Lutz
Keyword(s):  
Experimental Design ◽  
Statistical Methods ◽  
Review Paper ◽  
Systematic Errors ◽  
Past Experience ◽  
Random Errors ◽  
Trigonometric Parallaxes ◽  
Systematic And Random Errors

This review paper deals with the use of statistical methods to evaluate systematic and random errors associated with trigonometric parallaxes. First, systematic errors which arise when using trigonometric parallaxes to calibrate luminosity systems are discussed. Next, determination of the external errors of parallax measurement are reviewed. Observatory corrections are discussed. Schilt’s point, that as the causes of these systematic differences between observatories are not known the computed corrections can not be applied appropriately, is emphasized. However, modern parallax work is sufficiently accurate that it is necessary to determine observatory corrections if full use is to be made of the potential precision of the data. To this end, it is suggested that a prior experimental design is required. Past experience has shown that accidental overlap of observing programs will not suffice to determine observatory corrections which are meaningful.

Performance analysis of MRR FSO communication system under Gamma-Gamma turbulence channel with pointing error

2021 ◽  
pp. 126891
Author(s):  
Basel Mounir El Saghir ◽  
Mohamed Bakry El Mashade ◽  
Ashraf Mohamed Aboshosha
Keyword(s):  
Performance Analysis ◽  
Communication System ◽  
Pointing Error

scholarly journals A simple new method for identifying performance characteristics associated with success in elite tennis

2018 ◽  
Vol 14 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Anna Fitzpatrick ◽  
Joseph A Stone ◽  
Simon Choppin ◽  
John Kelley
Keyword(s):  
Performance Analysis ◽  
Statistical Methods ◽  
Rank Order ◽  
Large Datasets ◽  
Performance Characteristics ◽  
New Method ◽  
Considerable Time ◽  
Simple Method ◽  
Suitable Alternative ◽  
Using Data

Performance analysis and identifying performance characteristics associated with success are of great importance to players and coaches in any sport. However, while large amounts of data are available within elite tennis, very few players employ an analyst or attempt to exploit the data to enhance their performance; this is partly attributable to the considerable time and complex techniques required to interpret these large datasets. Using data from the 2016 and 2017 French Open tournaments, we tested the agreement between the results of a simple new method for identifying important performance characteristics (the Percentage of matches in which the Winner Outscored the Loser, PWOL) and the results of two standard statistical methods to establish the validity of the simple method. Spearman’s rank-order correlations between the results of the three methods demonstrated excellent agreement, with all methods identifying the same three performance characteristics ( points won of 0–4 rally length, baseline points won and first serve points won) as strongly associated with success. Consequently, we propose that the PWOL method is valid for identifying performance characteristics associated with success in tennis, and is therefore a suitable alternative to more complex statistical methods, as it is simpler to calculate, interpret and contextualise.

Performance Analysis of 60GHz Cooperative Communication System with Directional Transmission

2014 ◽  
Vol 1049-1050 ◽  
pp. 2020-2023
Author(s):  
Min Wang ◽  
Hao Zhang
Keyword(s):  
Performance Analysis ◽  
Cooperative Communication ◽  
Communication System ◽  
High Speed ◽  
Relay Node ◽  
Network Connectivity ◽  
Home Networks ◽  
High Definition ◽  
Optimal Position ◽  
Directional Transmission

60GHz wireless communication is a promising technology for multi-gigabit communication in future home networks. It brings possibility of achieving in-door high-definition multimedia applications with high-speed and low-delay experience. However, to maintain the network connectivity with 60GHz links, which are susceptible to propagation and penetration losses, is a major challenge. The quality and robustness of 60GHz links can be effectively improved by employing relay nodes or cooperative nodes in the network. In this paper, taking into consideration the directional transmission character of 60GHz system, we conduct performance analysis and simulations for the 60GHz cooperative communication system. Two cooperative forwarding approaches are analyzed and compared, and the optimal position of the cooperative relay node is proposed.

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