Influence of Bridged Taps on Transmission Performance of VDSL2 Lines
نویسنده
چکیده
The second generation of Very-High Speed Digital Subscriber Lines (VDSL2) represents a modern high-speed solution for present last-mile access networks. However, the transmission performance of VDSL2 lines is heavily dependent on the real conditions of symmetrical pairs and quads in local metallic lines and cables. One of the frequent elements in metallic access networks, which can negatively influence the transmission performance of modern digital systems, is bridged taps. This paper presents an analysis of the influence of bridged taps on transmission capacity of VDSL2 lines by using ABCD matrices. Thanks to that, the simulations can be performed for various scenarios and amounts of bridged taps and their parameters by simply cascading necessary matrices. The first part describes the models, while the second part is focused on simulations of VDSL2 digital subscriber lines for several examples with resulting conclusions.
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