An efficient model for twisted-pair cables with discontinuities and stubs for discrete time simulations

This paper describes an efficient model for twisted-pair cables suitable for discrete time simulations. The model uses a pole-zero approximation for the cable losses and a modified S-parameter approach to model the reflections due to discontinuities and stubs. The use of this model can improve simulation times by a factor of ten compared to the conventional method of including the channel impulse response in a discrete time simulator.