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Smart grid is capable to produce, distribute, and consume power in the most efficient way. This will allow more power at home and industries at low cost. To achieve above the best communication infrastructure is required to deliver reliable and economical services throughout the grid system. Smart grid can also accommodate power generation from local solar power and power generated through wind turbines. The smart grid also manages to collect data from home appliances using smart meters. It also provides intelligent controls giving more choice to consumers to how to use optimally electricity to save money and to operate electricity network efficiently and reliably. This paper attempts to review the communication and networking of smart grid which includes investigation of network architecture and communication technologies.

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CDMA is interference limited multiple access system. Power control is an effective way to reduce co-channel interference. Consequently, it can improve the system capacity. CDMA employs fast closed-loop power control in uplink in which signal-to-interference ratio (SIR) is estimated. Transmitting power is adjusted by comparing estimated SIR with desired SIR. In this paper a modified fixed step power control algorithm has been proposed, which can improve the performance of a CDMA system. The proposed algorithm produced a faster convergence and low outage probability compared to other power control algorithms discussed and analyzed to maintain the desired SIR target.