Weighted Code Transmission in Optical CMDA
In this paper, the comparative analysis of a fibre optics CDMA system with or without weighted code is presented using Matlab simulation. By changing various parameters of the systems, the authors compare two systems in terms of BER. As the number of active users increases the BER increases. It is found that the system using weighted code is better. The design for substation grounding system is considered for worker's safety in normal state and in fault of high current flow to substation grounding or approached area. The fault of high current flow to substation grounding may be the phenomenon of lightning or short-circuit grounding system.