July 2003
Intermediate to advanced
576 pages
11h 51m
English
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7.1. HomePNA 1.0
The idea of an existing telephone wiring–based home network system was originated from Tut System. Matt Taylor, the founder of Tut System, worked with his engineers to develop a proper signaling method over the home telephone wiring system. They had constructed a patch panel with telephone cables of different lengths to emulate some worst-case topologies. They found that the channel dispersion becomes a major impairment when the pulse-signaling rate approaches 200 kHz. To carry more information bits per signaling symbol while avoiding extensive signal processing, the PPM was used. In a PPM system, the time interval between adjacent pulses is slightly different depending upon the encoded information. The next pulse's position ...
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