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arXiv · 1510.00252

RF Lens-Embedded Massive MIMO Systems: Fabrication Issues and Codebook Design

Taehoon Kwon·Yeon-Geun Lim·Byung-Wook Min·Chan-Byoung Chae
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Abstract

In this paper, we investigate a radio frequency (RF) lens-embedded massive multiple-input multiple-output (MIMO) system and evaluate the system performance of limited feedback by utilizing a technique for generating a suitable codebook for the system. We fabricate an RF lens that operates on a 77 GHz (mmWave) band. Experimental results show a proper value of amplitude gain and an appropriate focusing property. In addition, using a simple numerical technique--beam propagation method (BPM)--we estimate the power profile of the RF lens and verify its accordance with experimental results. We also design a codebook--multi-variance codebook quantization (MVCQ)--for limited feedback by considering the characteristics of the RF lens antenna for massive MIMO systems. Numerical results confirm that the proposed system shows significant performance enhancement over a conventional massive MIMO system without an RF lens.

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Taehoon Kwon, Yeon-Geun Lim, Byung-Wook Min, Chan-Byoung Chae. 2016-04-15. RF Lens-Embedded Massive MIMO Systems: Fabrication Issues and Codebook Design. https://doi.org/10.1109/tmtt.2016.2574849

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