Resource Allocation Design for RIS-enhanced Backscatter Wireless-powered Symbiotic Networks
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影响因子：7.4
所属单位：School of Computer Science and Information Engineering, Hefei University of Technology
发表刊物：IEEE Transactions on Cognitive Communications and Networking
项目来源：the National Natural Science Foundation of China under Grants 61971176 and 62371180,the Anhui Provi
关键字：Symbiotic radio network, backscatter commu nication, reconfigurable intelligent surface
摘要：The integration of simultaneous wireless information and power transfer (SWIPT) with backscatter and reconfigurable intelligent surface (RIS)-aided communication provides a promis ing paradigm to reduce the energy consumption. In this paper, we propose a RIS-enhanced hybrid backscatter and wireless powered transmission scheme in the symbiotic radio network. Under this setting, we formulate the throughput maximization problem by jointly optimizing the transmit beamforming, pas sive beamforming, transmit power, backscatter coefficient, and slot allocation. Due to the coupled variables, the formulated optimization is non-convex. To solve it, an iterative algorithm is developed to decompose it into multiple subproblems. Specifically, we obtain the closed-form solutions for those variables in the single-user system. For the multi-user system, we solve the problem via the second-order cone programming (SOCP) and semi-definite programming (SDP) methods. Numerical simula tions show that the proposed hybrid transmission scheme can effectively improve the network throughput.
合写作者：Xinyue Hu,Wei Huang
第一作者：Yibo Yi
论文类型：期刊论文
通讯作者：Caihong Kai
学科门类：工学
文献类型：J
卷号：11
期号：1
页面范围：437-453
ISSN号：2332 - 7731
是否译文：否
发表时间：2024-08-05
收录刊物：SCI、EI