LAN Network through Power Line Communication

PLC is used for transmitting (50/60 Hz 220/110 V) power signal. It is not designed to convey high frequency signal such as 20 MHz communication signals used in the home plug 1 protocol. A power line channel is somewhat wireless channel, both suffer from noise, fading, multipath, and interference. Power line noise is produced by operation of electrical device. Fading, multipath and interference are caused by the imperfection of power line channels. Also limits the available bandwidth for communication purposes. In compliance the usable bandwidth in the home plug standard is 25MHz. There an extensive ongoing studies of power line channel characteristic. To conquer the above problems, robust signal modulation and data coding are needed. In this paper, the main purpose of developing local area network LAN through power line communication is because this technology doesn’t require extra cabling. It only uses the existing power cable in the house. Hence, the owner of the house doesn’t have to restructure their cabling system which is very inconvenient and costly.