… and applications energy-efficient could not … , energy-efficient communications can help the
world reduce its dependence on fossil fuel, enable demand response and distributed energy …

… that the energy efficiency of cooperative communication can … distances and outperform
direct communication. Similarly, the … , where the energy efficiency of cooperative transmission …

… , energy-efficient communications have been paid increasing attention under the background
of limited energy … In this article, basic concepts of energy-efficient communications are first …

… It is important to emphasize the role of EE metrics in energy efficient communications.
The concept of EE becomes meaningful only when it can be measured. Metrics then provide …

… energy-efficient communication over a single communication link … energy-efficient
communications are presented from an information theoretic viewpoint, and different energy-efficient …

… In this section, we introduced a transmit architecture for energy-efficient communications
systems, such as linear, parallel, switching, and envelope tracking architectures and envelope …

… framework for studying the energy efficiency trade-off of … , direct transmission is more
energy efficient than relaying. The … employed relays on energy efficiency are also investigated …

… are comprehensively investigated for 5G IoT communications here in this paper. We first
propose an integrated structure for the 5G IoT communication systems. Based on this structure, …

… a novel energy efficient … communication system with distributed RISs that can be dynamically
turned on or off depending on the network requirements. To maximize the energy efficiency …

… In particular, in MD-WCS, as we increase the dimension N, the system becomes more
energy efficient in addition to providing higher spectral efficiency. As a result, when OFDM is …