T-DMB 시스템에서 WOFDM과 COFDM의 성능비교에 관한 연구

A Study on the Performance Comparison of WOFDM and COFDM in T-DMB System

  • 이이극 (한국기술교육대학교 전기전자통신공학부) ;
  • 김한종 (한국기술교육대학교 전기전자통신공학부)
  • Li, Er-Ke (Korea University of Technology and Education) ;
  • Kim, Han-Jong (Korea University of Technology and Education)
  • 발행 : 2011.05.27

초록

As the demand of the high-speed transmission between fast moving mobile objects is increasing, more ideas are coming out to improve the channel distortion for such cases. WOFDM(Wavelet-based Orthogonal Frequency Division Multiplexing) is the most brilliant one among them, which combines the advantages of wavelet transform technique and OFDM technique, and it has been implemented into the PLC (Power Line communication) system. In this paper, we are trying to describe a comparative study on COFDM (Fourier-base OFDM) and WOFDM in the conventional T-DMB system. From the simulation results, we can see that the performances of COFDM and WOFDM are nearly same under the AWGN channel. However, WOFDM outperforms COFDM under the time-invariant Rayleigh fading channel.

키워드