On the Performance of Beam Division Nonorthogonal Multiple Access for FDD-Based Large-Scale Multi-User MIMO Systems

Yong I. Choi, Jae W. Lee, Minjoong Rim, Chung Gu Kang

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

For the frequency division duplexing-based large-scale multiple-input multiple-output (MIMO) systems, we consider a multi-user MIMO (MU-MIMO) non-orthogonal multiple access (NOMA) scheme, referred to as beam division-NOMA (BD-NOMA), which is featured by a long-term feedback-based user grouping and clustering, along with a short-term feedback-based BD-NOMA scheduling. The performance of BD-NOMA is not warranted in practice because near users are severely interfered by strong signals for the far users of other beams, and furthermore, the long-term feedback-based user grouping and clustering might result in short-term inter-beam interference. We consider the short-term feedback-based joint optimization problem of user selection and power allocation for NOMA in each beam and system-wide power allocation for MU-MIMO, dealing with both intra-beam and inter-beam interference at the same time. We formulate a joint optimization problem for a large-scale MIMO system with the multiple channel quality indicators-based short-term feedback. In our analysis, we reformulate the original problem into an equivalent one that can be solved iteratively with the weighted minimum mean square error-based algorithm. Then, the performance analysis is presented to conclude that the proposed optimization is essential for enabling BD-NOMA to outperform beam division multiple access, especially when inter-beam interference becomes critical.

Original languageEnglish
Article number7932544
Pages (from-to)5077-5089
Number of pages13
JournalIEEE Transactions on Wireless Communications
Volume16
Issue number8
DOIs
Publication statusPublished - 2017 Aug

Bibliographical note

Funding Information:
Manuscript received August 21, 2016; revised December 15, 2016 and March 18, 2017; accepted May 5, 2017. Date of publication May 23, 2017; date of current version August 10, 2017. This work was supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (No. R0101-17-244, Development of 5G Mobile Communication Technologies for Hyper-connected smart services). The associate editor coordinating the review of this paper and approving it for publication was R. Brown. (Corresponding author: Chung Gu Kang.) Y. I. Choi, J. W. Lee, and C. G. Kang are with the School of Electrical Engineering, Korea University, Seoul 02841, South Korea (e-mail: only1korea@korea.ac.kr; lijrew@korea.ac.kr; ccgkang@korea.ac.kr.

Publisher Copyright:
© 2002-2012 IEEE.

Keywords

  • BD-NOMA
  • Multi-user multi-input multi-output (MU-MIMO)
  • beam division multiple access (BDMA)
  • frequency division duplexing (FDD) system
  • inter-beam interference
  • non-orthogonal multiple access (NOMA)
  • weighted minimum mean square error (WMMSE)
  • weighted sum rate (WSR)

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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