6533b7d0fe1ef96bd125a33c
RESEARCH PRODUCT
Energy-Efficient Resource Optimization with Wireless Power Transfer for Secure NOMA Systems
Symeon ChatzinotasLei LeiYaxiong YuanZheng ChangYun HuTapani Ristaniemisubject
Mathematical optimizationOptimization problemIterative methodComputer sciencewireless power transfer02 engineering and technologysecuritylangaton tiedonsiirto0203 mechanical engineeringoptimointi0202 electrical engineering electronic engineering information engineeringWirelessResource managementresource managementreceiversta213business.industryturvallisuusNOMA020206 networking & telecommunications020302 automobile design & engineeringwireless communicationChannel state informationlangaton viestintäResource allocationbusinessoptimizationEfficient energy usedescription
In this paper, we investigate resource allocation algorithm design for secure non-orthogonal multiple access (NOMA) systems empowered by wireless power transfer. With the consideration of an existing eavesdropper, the objective is to obtain secure and energy efficient transmission among multiple users by optimizing time, power and subchannel allocation. Moreover, we also take into consideration for the practical case that the statistics of the channel state information of the eavesdropper is not available. In order to address the optimization problem and its high computational complexity, we propose an iterative algorithm with guaranteed convergence to deliver a suboptimal solution for general cases. For some special cases, the solution ensures the global optimum. Numerical studies demonstrate the competitiveness of the proposed algorithmic solution over conventional orthogonal multiple access systems as well as over other existing NOMA resource allocation schemes. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-08-01 |