The potential for solar power is available in Indonesia because it located on the equator, with good sunshine all year round. Indonesian government currently actively developing a plant while still looking at consequences of development, especially surrounding environment. It necessary to pay attention so that does not disturb environment, which can also cause climate change. city Medan one lar...

Mobile phones continue to develop with more user features being implemented as new technology is released commercially. The boundaries will blur between internet, broadcast and mobile telecommunications. Significantly more radio base stations will be needed as communications technology nears the physical limits in spectrum efficiency and to support increasing data-rates. The impact of transmitt...

In this paper, we propose how to control the uplink transmit power of a mobile station (MS) during soft handoff in order to reduce the error probability of downlink transmit power control command bit without macro diversity gain at the base station controller (BSC). The uplink transmit power control is based on uplink transmit power control commands from all base stations (BS’s) belonging to th...

The life in the 21st century carries the consequence of using many goods and conveniences of the technocratic world. Doubtless, electric energy is one of such good. According to the principle of conservation of energy, we have to use different sources of energy with the aim of production of electric current. Most frequently the energy contained in mineral fuels or nuclear energy is being used [...