Maximum Energy Efficiency Tracking Circuits for Converter-Less Energy Harvesting Sensor Nodes

Maximum Energy Efficiency Tracking Circuits for Converter-Less Energy Harvesting Sensor Nodes Abstract: Converter-less supply architecture is promising for energy harvesting sensor nodes, due to their high conversion efficiency, low cost, and easy integration. However, lack of a dc-dc converter precludes the electronic load operating under the voltage for optimal energy efficiency, since the output voltage […]


Cognitive Coded Cooperation in Underlay Spectrum-Sharing Networks Under Interference Power Constraints

Cognitive Coded Cooperation in Underlay Spectrum-Sharing Networks Under Interference Power Constraints Abstract: Since the radio-frequency spectrum is fast becoming scarce, increasing the spectral utilization is of utmost importance for the sustainable development of wireless communications systems. In an effort to improve the spectral efficiency, cooperative relaying techniques have recently been integrated into spectrum-sharing environments. In […]