Robust transceiver designs in multiuser MISO broadcasting with simultaneous wireless information and power transmission

Zhengyu Zhu, Zhongyong Wang, Kyoung Jae Lee, Zheng Chu, Inkyu Lee

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In this paper, we address a new robust optimization problem in a multiuser multiple-input single-output broadcasting system with simultaneous wireless information and power transmission, where a multi-antenna base station (BS) sends energy and information simultaneously to multiple users equipped with a single antenna. Assuming that perfect channel-state information (CSI) for all channels is not available at the BS, the uncertainty of the CSI is modeled by an Euclidean ball-shaped uncertainty set. To optimally design transmit beamforming weights and receive power splitting, an average total transmit power minimization problem is investigated subject to the individual harvested power constraint and the received signal-to-interference-plus-noise ratio constraint at each user. Due to the channel uncertainty, the original problem becomes a homogeneous quadratically constrained quadratic problem, which is NP-hard. The original design problem is reformulated to a relaxed semidefinite program, and then two different approaches based on convex programming are proposed, which can be solved efficiently by the interior point algorithm. Numerical results are provided to validate the robustness of the proposed algorithms.

Original languageEnglish
Article number7487974
Pages (from-to)173-181
Number of pages9
JournalJournal of Communications and Networks
Volume18
Issue number2
DOIs
Publication statusPublished - 2016 Apr 1

Keywords

  • Energy harvesting
  • multiuser multiple-input single-output (MISO) broadcasting
  • robust transceiver design
  • simultaneous wireless information and power transmission

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems

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