الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
There was significant progress in the field of digital communication it
became possible to access the Internet simply by plugging the computer
into a wall socket in homes, offices or companies. Communication via
the power lines (PLC) are exploiting infrastructure on a wide range of
electrical power networks to provide high-speed broadband and
multimedia in the home or office. Until recently, the main obstacle in the
lack of adoption of PLC technology is the lack of an international
standard issued by the Standardization Organization universally
recognized. This obstacle have been removed by agreeing on IEEE
1901 standard for broadband networks across the electricity transmission
lines and open new height in the industry PLC. However, the
characteristics of electric power grids offer some technical challenges for
high-speed data communications. Noise In power outlet is the sum of the
noise produced by the different devices related in production line
impulsive noise and other interferences of narrow band. In this thesis we
tested a practical set of modems, which are used in communication over
power lines and studied the most important factors affecting the
performance of the modem during the practical application of the actual
communication networks.