Abstract
This article presents a new time domain equaliser (TEQ), which can be used in discrete multi-tone (DMT) systems to maximise the bit rate. The proposed TEQ is tested in the fast Fourier transform based discrete multi-tone (FFT-DMT) system, and in a proposed discrete cosine transform based discrete multi-tone (DCT-DMT) system. The objective of the proposed DCT-DMT system is to make use of the energy compaction property of the DCT to reduce the channel effects on the transmitted signals. A mathematical model of the proposed TEQ is presented. Simulation experiments have been carried out to test the effect of the proposed TEQ with the FFT-DMT system and the proposed DCT-DMT system. The results show that the performance of the DCT-DMT system with the proposed TEQ is better than the FFT-DMT system with this TEQ over the eight standard carrier serving area (CSA). The results also show that employing the proposed TEQ in the DCT-DMT system can achieve a high bit rate, ranging from 2.899 Mbps to 5.369 Mbps.