Intelligent Reflecting Surface Based Backscatter Communication for Data Offloading

نویسندگان

چکیده

This paper investigates intelligent reflecting surface based backscatter communication (IRS-BackCom), in order to realize computational task offloading of energy-constrained mobile edge computing network a self-sustainable manner. Specifically, the system operation is divided into two phases. In first one, ambient signal energy from power beacon (PB) either provides supply local and harvesting circuits, or flows storage, when reaching IRS. second stored used enable IRS-BackCom for partial data energize circuit. Based on this, maximization problem sum bits formulated. By jointly optimizing beamforming vector at PB, matrix IRS, time scheduling two-phase process, as well computing, are maximized. addition, this proposes element clustering BackCom, so reduce control computation complexity According different operating mechanisms, cluster modes considered, namely independent mode joint mode. Simulation results demonstrate achievable by proposed schemes.

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ژورنال

عنوان ژورنال: IEEE Transactions on Communications

سال: 2022

ISSN: ['1558-0857', '0090-6778']

DOI: https://doi.org/10.1109/tcomm.2022.3170629