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

Taehoon Kwon, Yeon Geun Lim, Byung Wook Min, Chan Byoung Chae

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


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 (millimeter-wave) 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 - we estimate the power profile of the RF lens and verify its accordance with experimental results. We also design a codebook - multivariance codebook quantization - 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.

Original languageEnglish
Article number7499871
Pages (from-to)2256-2271
Number of pages16
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number7
Publication statusPublished - 2016 Jul

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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