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Minimizing power consumption in the area of ICT (Information and Communication Technologies) is becoming a hot topic. In computer networks, traffic measurements have indicated that the network utilization may become very low (less than 10%) during non-peak hours, which provides the opportunity to power off some routers and links in a network to conserve energy consumption without causing network performance...
Continuously growing energy consumption in cellular networks motivates the research towards energy saving approaches. Among previous work, many studies suggest different base station shutdown strategies to reduce the transmission power in case of low or no traffic. Besides the strategy that shutdown base stations completely, our work suggests and evaluates the usage of partial shutdown strategy for...
Energy consumption of communication networks is an important contributor to the ICT sector's greenhouse gas emission footprint. This research project focuses on power consumption reduction of communication networks by dynamically adapting network configuration to traffic demands. This is promising as networks are often under utilised over long periods. In the context of this work, dynamic topologies...
In this paper, an energy efficient adaptive modulation scheme is proposed for a wireless cognitive radio ad hoc network, where each node is equipped with cognitive radio and the network is an OFDMA system operating on time slots. In each slot, the users with new traffic demand will sense the spectrum and locate the available subcarrier set. Then they choose subcarriers with favorable channel condition...
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