Abstrakt

Performance of Wavelet Transform based OFDM and Application to DVB system

Vidushi Dagour, Prabhat Patel

OFDM has been proved to be an efficient and promising multicarrier modulation technique for high data rate modern communication systems. However, it has some limitations such as high PAPR, phase-noise and carrier frequency offset. In this paper, wavelet transform has been used to design an OFDM system and its performance is compared with conventional FFT-OFDM. The simulation results show that the DWT-OFDM outperforms the FFTOFDM. Further, the proposed DWT-OFDM is applied to Digital video broadcasting system (DVB) for terrestrial mode. The simulation shows that the results are in close agreement with original DVB system. The design and simulations are performed using MATLAB/SIMULINK® software