Ambient Backscatter-Based User Cooperation for mmWave Wireless-Powered Communication Networks with Lens Antenna Arrays

Author:

Guo Rongbin12ORCID,Yin Rui13,Wang Guan12,Xu Congyuan4,Yuan Jiantao13

Affiliation:

1. College of Computer Science and Technology, Zhejiang University, Hangzhou 310058, China

2. School of Information and Electrical Engineering, Hangzhou City University, Hangzhou 310015, China

3. Zhejiang Engineering Research Center of Building’s Digital Carbon Neutral Technology, Hangzhou 310015, China

4. College of Information Science and Engineering, Jiaxing University, Jiaxing 314001, China

Abstract

With the rapid consumer adoption of mobile devices such as tablets and smart phones, tele-traffic has experienced a tremendous growth, making low-power technologies highly desirable for future communication networks. In this paper, we consider an ambient backscatter (AB)-based user cooperation (UC) scheme for mmWave wireless-powered communication networks (WPCNs) with lens antenna arrays. Firstly, we formulate an optimization problem to maximize the minimum rate of two users by jointly designing power and time allocation. Then, we introduce auxiliary variables and transform the original problem into a convex form. Finally, we propose an efficient algorithm to solve the transformed problem. Simulation results demonstrate that the proposed AB-based UC scheme outperforms the competing schemes, thus improving the fairness performance of throughput in WPCNs.

Funder

China Postdoctoral Science Foundation

Zhejiang Provincial Postdoctoral Scholarship

National Natural Science Foundation of China

Zhejiang Provincial Natural Science Foundation of China

Publisher

MDPI AG

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