A Novel Uniform Discrete Multitone Transceiver with Power-Allocation for Digital Subscriber Line

A novel Uniform Discrete Multitone (DMT) transceiver is proposed, utilizing a wavelet packet based filter bank transmultiplexer in conjunction with a DMT transceiver. The proposed transceiver decomposes the channel spectrum into subbands of equal bandwidth. The objective is to minimize the bit error rate (BER), which is increased by channel‐noise amplification. This noise amplification is due to the Zero‐ Forcing equalization (ZFE) technique. Quantization of the channel‐noise amplification is presented, based on post‐equalization signal‐to‐noise ratio (SNR) and probability of error in all subbands of the Uniform DMT system. A modified power loading algorithm is applied to allocate variable power according to subband gains. A BER performance comparison of the Uniform DMT with variable and uniform power‐loading and with a conventional DMT system in a Digital Subscriber Line (DSL) channel is presented.