Optimal Resource Allocation for Secure Multi-User Wireless Powered Backscatter Communication with Artificial Noise

Pu Wang, Ning Wang, Monireh Dabaghchian, Kai Zeng, Zheng Yan

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

5 Citations (Scopus)
174 Downloads (Pure)


In this paper, we consider a wireless powered backscatter communication (WPBC) network in which a full-duplex access point (AP) simultaneously transmits information and energy signals by injecting artificial noise (AN) to secure the backscatter transmission from multiple backscatter devices (BDs). To maximize the minimum throughput and ensure fairness and security, we formulate an optimization problem by jointly considering the power splitting ratio between dedicated information signals and AN, backscatter time and signal power allocation among multiple BDs. For a single BD network, we obtain a closed-form solution and evaluate its validity through proof-of-concept experiments. For the general case with multiple BDs, we present an iterative algorithm by leveraging block coordinate descent (BCD) and successive convex approximation optimization to solve a non-convex problem incurred in WPBC. We further show the convergence of the proposed algorithm and analyze its complexity. Finally, extensive simulation results show that the proposed algorithm achieves an optimal and equitable throughput for all BDs, and our work provides a good perspective of resource allocation to improve the performance of WPBC networks.

Original languageEnglish
Title of host publicationINFOCOM 2019 - IEEE Conference on Computer Communications
Number of pages9
ISBN (Electronic)9781728105154
Publication statusPublished - 1 Apr 2019
MoE publication typeA4 Article in a conference publication
EventIEEE Conference on Computer Communications - Paris, France
Duration: 29 Apr 20192 May 2019
Conference number: 38

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X


ConferenceIEEE Conference on Computer Communications
Abbreviated titleINFOCOM


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