BER Reduction for DMT-ADSL Based on DMWT

Discrete multi-tone (DMT) modulation is an orthogonal frequency division multiplexing (OFDM) based modulation scheme used in asymmetrical digital subscriber line (ADSL) and proposed for various other high-speed broadband access systems. To enhance the bit error rate (BER) for the DMT-ADSL, a discrete multi-wavelet transform (DMWT) model is proposed. The performance of standard and proposed models is sim- ulated using Matlab software under the additive white Gaussian noise (AWGN) channel eect. The eect of impulse random bit location noise was also taken into our simula- tion. The simulation results show that the proposed model based on DMWT technique outperforms the standard model in terms of BER.

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