제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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An Adaptive Equalization of Amplitude Chrominance Distortion by using the Variable Step-size Technique

  • Chutchavong, Vanvisa (Research Center for Communications and Information Technology (ReCCIT) and Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Janchitrapongvej, Kanok (Research Center for Communications and Information Technology (ReCCIT) and Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Benjangkaprasert, Chawalit (Research Center for Communications and Information Technology (ReCCIT) and Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Sangaroon, Ornlarp (Research Center for Communications and Information Technology (ReCCIT) and Department of Information Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang)
  • Published : 2004.08.25
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Abstract

This paper presents an adaptive equalizer using finite impulse response (FIR) filter and least-mean square (LMS) algorithm. Herein, the variable step-size technique (VSLMS) for compensating the amplitude of chrominance signal is utilized. The proposed equalizer can be enhanced and compressed the chrominance signal at color subcarrier. The LMS algorithm employed in simplicity structure but gives slow convergence speed. Thus, the variable step-size is very attractive algorithm due to its computational efficiencies and the speed of convergence is improved. In addition, experimental results are carried out by using the modulated 20T sine squared test signal. It is shown here that the adaptive equalizer can be equalized the amplitude chrominance distortion in color television transmission without relative delay distortion.

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