Understanding digital subscriber line technology
Understanding digital subscriber line technology
DSL: Simulation Techniques and Standards Development for Digital Subscriber Lines
DSL: Simulation Techniques and Standards Development for Digital Subscriber Lines
Dynamic spectrum management for next-generation DSL systems
IEEE Communications Magazine
IEEE Communications Magazine
Loop makeup identification via single ended testing: beyond mere loop qualification
IEEE Journal on Selected Areas in Communications
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This paper presents an algorithm to identify the full configuration of a wired transmission line from its frequency response. It is assumed that the line can have up to two bridged taps. Each bridged tap divides the main line to two segments, and with two bridged taps there will be at most three segments in the main line. Furthermore, each segment of the main line and the bridged taps can have three different gauges. The problem of characterizing the line configuration is concerned with identifying each segment (main line segments and bridged taps) in terms of its length and gauge. The problem is solved in two phases: initialization and optimization. The algorithm can be used as single ended line testing, which means the line can be characterized by performing a simple test from the central office. Simulations demonstrate the efficacy of the proposed method.