PERFORMANCE OF POWER LINE COMMUNICATION SYSTEMS WITH ALL KIND OF NOISES REDUCTION IN SINGLE SCHEME FOR SMART GRID APPLICATIONS
C.R.Umakumari, Asst Prof., PSN College of Engineering and Technology, Tirunelveli, Tamilnadu.
Kanagavel Rajan.P, PG Scholar, PSN College of Engineering and Technology, Tirunelveli, Tamilnadu.
The most striking point is using the existing power line infrastructure, so installation cost is lower than other communication system. Besides this, communication service can be available everywhere outlets exist . Since power line, however have been made for electricity distribution purpose, its channel characteristic is very hostile for data transmission. There are lots of devices with variety impedance in PLC network, so this cause multipath environment.
Also, impulsive noise, Back Colored noise, White Gaussian noise are generated by random joint of each device, which sometimes exceeds power spectral density (PSD) of background noise by 50dB. Because these are critical to the system performance, it needs to mitigate impulsive noise.
In this paper, we propose clipping scheme and equalizer as a method to overcome above issues. Clipping is cutting off amplitude of the received signal over threshold level and the equalizer compensates effects of PLC channel. This paper is organized as follows. In Section II, we describe the PLC system and the channel model of PLC system is presented in Section III. The proposed PLC system model considered in this paper is described in Section IV. The performance of the proposed interference cancellation scheme is analyzed in Section V. Simulation results are shown in Section VI. Finally, applications and concluding remarks are given in Section VII and Section