Energy harvesting with cooperative networks and adaptive transmission

Cooperative relaying and adaptive modulation are the most widespread techniques used to meet the main requirements of Fourth Generation (4G) systems and potential Fifth Generation (5G) networks. This study primarily aims to compare the performance of adaptive modulation for the direct path, dual-hop relaying, cooperative relaying, and energy-harvesting relay, by computing the exact probability density function (PDF) of end-to-end signal to noise ratio (SNR). Energy harvesting relaying is optimized and compared with conventional cooperative relaying. Results also shown the performance of next green cooperative systems compared with conventional cooperative relaying ones. The simulation demonstrates that using green cooperative systems degrades spectral efficiency by only 5%.