High performance PCC-DMT system based on hybrid multi-wavelet functions

الملخص EN

In this paper a scheme is proposed to improve the Bit Error Rate (BER) performance for Discrete Multi-Tone (DMT) system in wireless channel.

The conventional DMT system is based on Fast Fourier Transform (FFT).

The proposed system is based on Hybrid Multi-Wavelet Transform (HMWT).

The HMWT is mixed between FFT and Multi-Wavelet Transform (MWT).

The Inter-Carrier Interference (ICI) in DMT system due to Doppler spread is reduced by using Polynomial Cancellation Coding (PCC).

Simulation results are done in three different types of channels: Additive White Gaussian Noise (AWGN) channel, flat fading channel and selective fading channel.

The results show that the PCC-DMT system based on HMWT achieves better performance than the PCC-DMT system based on FFT and the PCC-DMT system based on MWT in all channels types.