A model based cable network simulator: development and experimental verification

Abstract

Determination of the channel is a key to any data communication.Recently, a deterministic method to compute voltage ratios and input impedances of an indoor power line network has been proposed [3]. In our work, we extend this method based on the calculation of multipath reflected waves to the determination of reflection and transmission coefficients in cable networks. To assess the validity of our model, we measure the electrical characteristics of cables, develop a simulator based on the model, and incorporate the measured cable characteristics into the simulator. We apply the model to a large variety of cable networks, and perform measurements on the same cable networks. An excellent agreement between the model and measurements is shown.

Theoretical Limits of a Novel Multiplexing Method

“…The topology is fully described by an adjacency matrix A and a segment length matrix L. The cable is fully described by its frequency-dependent characteristic impedance Zc and propagation constant y. As explained in [3], an accurate model taking as parameters the absolute characteristic impedance, the attenuation factor a0 at frequency foJ and the relative permittivity c, is given by: (1) with a = or* f J and /1 2z= f -, IC…”

Development of a finite differential model for the analysis of environmental effects on transmission lines for down-hole applications

“…digital and analogue signals, between data acquisition systems and power tools (Juan et al, 2009; Li et al, 2009; Liu et al, 2010; Wade et al, 2005). Some work has been reported on the analysis of cables for down-hole tools, but their scope is limited to specific applications under restricted conditions, such as for high frequency (Chen and Dinavahi, 2012; De Paula et al, 2008; Hanson, 2011; Udrea and Vizireanu, 2008; Vizireanu and Halunga, 2011) or DC power transmission (Haumonte et al, 2006; Kitayama and Abe, 2008; Leger and Nwankpa, 2005). These models are also limited to instances where the temperature along the transmission line is assumed to be constant, or increasing gradually, as the depth increases – conditions that are not adequately satisfied in many situations.…”