Antenna grouping based feedback reduction for FDD-based massive MIMO systems

Byungju Lee, Junil Choi, Ji Yun Seol, David J. Love, Byonghyo Shim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Citations (Scopus)

Abstract

Recent works on massive multiple-input multiple-output (MIMO) have shown that a potential breakthrough in capacity gains can be achieved by deploying a very large number of antennas at the basestation. Although transmit-side channel state information (CSI) can be obtained by employing channel reciprocity in time division duplexing (TDD) systems, explicit feedback of CSI from the user to the basestation is required for frequency division duplexing (FDD) systems. In this paper, we propose an antenna grouping based feedback reduction technique for FDD-based massive MIMO systems. The proposed algorithm, dubbed antenna group beamforming (AGB), groups antenna elements using pre-designed patterns. The proposed method introduces the concept of using a header of overall feedback resources to select a suitable group pattern and the payload to quantize the effective channel vector. Simulation results show that the proposed method achieves significant feedback overhead reduction over conventional approach.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Communications, ICC 2014
PublisherIEEE Computer Society
Pages4477-4482
Number of pages6
ISBN (Print)9781479920037
DOIs
Publication statusPublished - 2014 Jan 1
Event2014 1st IEEE International Conference on Communications, ICC 2014 - Sydney, NSW, Australia
Duration: 2014 Jun 102014 Jun 14

Other

Other2014 1st IEEE International Conference on Communications, ICC 2014
CountryAustralia
CitySydney, NSW
Period14/6/1014/6/14

ASJC Scopus subject areas

  • Computer Networks and Communications

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    Lee, B., Choi, J., Seol, J. Y., Love, D. J., & Shim, B. (2014). Antenna grouping based feedback reduction for FDD-based massive MIMO systems. In 2014 IEEE International Conference on Communications, ICC 2014 (pp. 4477-4482). [6884026] IEEE Computer Society. https://doi.org/10.1109/ICC.2014.6884026