The growing concerns of a global environmental change raises a revolution onthe way of utilizing energy. In wireless industry, green wirelesscommunications has recently gained increasing attention and is expected to playa major role in reduction of electrical power consumption. In particular,actions to promote energy saving of wireless communications with regard toenvironmental protection are becoming imperative. To this purpose, we study agreen communication system model where wireless base station is provisionedwith a combination of renewable power source and electrical grid to minimizepower consumption as well as meeting the users' demand. More specifically, wefocus on an adaptive power management for wireless base station to minimizepower consumption under various uncertainties including renewable powergeneration, power price, and wireless traffic load. We believe that demand sidepower management solution based on the studied communication architecture is amajor step towards green wireless communications.
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