Near-Optimal Wireless Powered Information Transfer Strategy for Multiuser MIMO Systems 


Vol. 44,  No. 5, pp. 835-844, May  2019
10.7840/kics.2019.44.5.835


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  Abstract

This paper proposes a near-optimal method for wireless powered information transmission in multiuser multi-input multi-output channels. An access point transfers power to multiple users through downlink beamforming, and using the charged power, users transmit information to the access point in the uplink through zero-forcing-based spatial multiplexing. In order to optimize the max-min throughput, we derive a downlink energy beamforing method using the Gradient algorithm, and propose an uplink information transmission scheme using user-specific number of data streams. Through numerical simulations, it is shown that the proposed method performs better than conventional suboptimal methods and that the proposed scheme performs close to the optimal method while significantly reducing computational complexity.

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  Cite this article

[IEEE Style]

S. Kim, H. Kim, J. Choi, "Near-Optimal Wireless Powered Information Transfer Strategy for Multiuser MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 5, pp. 835-844, 2019. DOI: 10.7840/kics.2019.44.5.835.

[ACM Style]

Seonyeong Kim, Hoonchang Kim, and Jihoon Choi. 2019. Near-Optimal Wireless Powered Information Transfer Strategy for Multiuser MIMO Systems. The Journal of Korean Institute of Communications and Information Sciences, 44, 5, (2019), 835-844. DOI: 10.7840/kics.2019.44.5.835.

[KICS Style]

Seonyeong Kim, Hoonchang Kim, Jihoon Choi, "Near-Optimal Wireless Powered Information Transfer Strategy for Multiuser MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 5, pp. 835-844, 5. 2019. (https://doi.org/10.7840/kics.2019.44.5.835)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880