Abstract
In this paper, we focus on the issue of energy efficiency (EE) optimization of amplify-and-forward-based energy harvesting two-way relaying systems. Utilizing the statistical channel state information, we first build a statistical EE model, which is applicable to practical environments under fast fading channels. Then, a power allocation problem is formulated to maximize the EE under the constraints of total power and sum rate. Particularly, we have taken the asymmetric traffic requirements into account in our design, considering that the two sources may have different data rates. With the help of nonlinear fractional programming and Karush-Kuhn–Tuchker conditions, closed-form solution is achieved, thus providing valuable guidelines into practical system designs. For wider applications, we have shown that our results can be extended to multi-relay multi-user scenarios. Simulation results highlight the effect of our analytical results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
