JCT - Volume 6 Issue 2 (February 2017)

 


Sr/No/ Title Pdf
1 Real time Application of Eye tracking for Physically Challenged in a Natural Desktop Environment
R. Nithiya

Abstract- Various human activities can be indicated by eye blink patterns especially for paralyzed people where verbal communication is impossible. In this paper is described a method based on image processing techniques for detecting human eye blink. The system is mainly based on indirect MATLAB based communication for paralyzed people. Image acquisition toolbox of MATLAB 8.1 used to take the real time image of the paralyzed people in front of a system. Region of interest (ROI) is eye to check the status of eye open/close. Whenever particular eye are open or closed it give different commands to facial segmentation algorithm. The commands are then converted into audio message using SAPI (Speech Application Programming Interface) tool of windows and can be heard and viewed by the caregiver. The system is a real time implementable concept to provide the maximum accuracy for eye tracking and visual message conversion.

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2 Performance Analysis of OFDM for Multiple Antennas
G.Sudhagar Govindhaswamy

Abstract- This paper presents the channel coding assisted STBC-OFDM systems, and employs the Coded Modulation techniques (CM), since the signal bandwidth available for wireless communications is limited. The paper employs chaos technique at the decoding stage of the Non-binary TTCM decoder, since the turbo decoding algorithm can be viewed as a high-dimensional dynamical nonlinear system. A simple technique to control transient chaos of turbo decoding algorithm is devised. This paper deals with the MIMO-OFDM technique that candidate with the fourth generation (4G) of the wireless communication systems, this technique can provide high data rate transmission without increasing transmit power and expanding bandwidth, also it can efficiently use space resources and has a bright future. The analysis of non-linear discrete deterministic Non-binary TTCM decoder used the Binary (0-1) test for chaos to distinguish between regular and chaotic dynamics. The most powerful aspect of the method is that it is independent of the nature of the vector field (or data) under consideration. The simulation results show that the performance of the TTCM decoding algorithmbased chaos technique outperforms the binary and non-binary decoding methods and suitable to deal with error control coding of the STBC-OFDM schemes.

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