Energy-efficient power allocation in millimeter wave massive MIMO with non-orthogonal multiple access

Wanming Hao, Ming Zeng, Zheng Chu, Shouyi Yang

Research output: Journal PublicationArticlepeer-review

147 Citations (Scopus)

Abstract

In this letter, we investigate the energy efficiency (EE) problem in a millimeter wave massive MIMO system with non-orthogonal multiple access (NOMA). Multiple two-user clusters are formulated according to their channel correlation and gain difference. Following this, we propose a hybrid analog/digital precoding scheme for the low radio frequency chains structure at the base station. On this basis, we formulate a power allocation problem aiming to maximize the EE under users' quality of service requirements and per-cluster power constraint. An iterative algorithm is proposed to obtain the optimal power allocation. Simulation results show that the proposed NOMA scheme achieves superior EE performance than conventional OMA scheme.

Original languageEnglish
Pages (from-to)782-785
Number of pages4
JournalIEEE Wireless Communications Letters
Volume6
Issue number6
DOIs
Publication statusPublished - Dec 2017
Externally publishedYes

Keywords

  • Energy efficiency
  • Hybrid precoding
  • Massive MIMO
  • Millimeter wave
  • NOMA

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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