Error performance evaluation of the MDPSK-DMT systems in DSL with AWGN andimpulse noise

A new Digital Multitone (DMT)-Digital Subscriber Loop (DSL) system with MDP SK modulation for each subcarrier is proposed in this paper. The error perf ormance of the system in the presence of additive white Gaussian noise (AWG N) and impulse noise (IN) is investigated. The bandlimitation effect of the DSL on the DMT signal is studied based on a discrete model of channel impu lse response. A recently proposed impulse noise model, in which IN is viewe d as the product of a Bernoulli process and a Gaussian process is adopted. Impairments after Fourier transform at the receiver end ape analysed. A clo sed-form expression for the symbol error rate (SER) of the MDPSK-DMT system is derived. Based on the impulse noise generator proposed in this paper, s ystem simulations are also conducted to verify the performance analysis.