Reducing Channel Feedback Overhead with Hybrid Beamforming in 5G NR 


Vol. 44,  No. 9, pp. 1770-1777, Sep.  2019
10.7840/kics.2019.44.9.1770


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  Abstract

To be able to make use of millimeter wave spectrum in cellular networks, beamforming technology is essential. In the recent standardization of 5G New Radio, the definition of Channel State Information Reference Signal(CSI-RS) codebook for efficient channel estimation when using massive antenna arrays was included. In this paper, we propose a hybrid beamforming design which can increase the channel gain while minimizing the overhead caused by channel estimation feedback. An extensive simulation was conducted by implementing a link-level simulation based on the channel model defined in the 3GPP standard.

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  Cite this article

[IEEE Style]

K. Lee, G. Lee, K. Lee, J. Lim, S. Choi, "Reducing Channel Feedback Overhead with Hybrid Beamforming in 5G NR," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 9, pp. 1770-1777, 2019. DOI: 10.7840/kics.2019.44.9.1770.

[ACM Style]

Kyungjin Lee, Gyujin Lee, Kitaek Lee, Jonghan Lim, and Sunghyun Choi. 2019. Reducing Channel Feedback Overhead with Hybrid Beamforming in 5G NR. The Journal of Korean Institute of Communications and Information Sciences, 44, 9, (2019), 1770-1777. DOI: 10.7840/kics.2019.44.9.1770.

[KICS Style]

Kyungjin Lee, Gyujin Lee, Kitaek Lee, Jonghan Lim, Sunghyun Choi, "Reducing Channel Feedback Overhead with Hybrid Beamforming in 5G NR," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 9, pp. 1770-1777, 9. 2019. (https://doi.org/10.7840/kics.2019.44.9.1770)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880