Performance Analysis on Uplink Pilot Allocation in TDD Massive MIMO Heterogeneous Networks

• HAO Wanming

  Kyushu University

• MUTA Osamu

  Kyushu University

• GACANIN Haris

  Nokia Bell Labs

• FURUKAWA Hiroshi

  Kyushu University

Abstract

Massive MIMO (mMIMO) is a promising technology for smart multimedia and wireless communication fields. In this paper, we investigate pilot allocation problem in two-tier time division duplex (TDD) heterogeneous network (HetNet) with mMIMO. First, we propose a new pilot allocation scheme for maximizing ergodic downlink sum rate of macro users (MUs) and small cell users (SUs), where the uplink pilot overhead and cross-tier interference are jointly considered. Then, we theoretically analyze the formulated problem and propose a low complexity one-dimensional search algorithm to obtain the optimum pilot allocation. In addition, we propose two suboptimal pilot allocation algorithms to simplify the computational process and improve SUs' fairness, respectively. Finally, simulation results show that the performance of the proposed scheme outperforms that of the traditional schemes.

Journal

• IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E100.A (11), 2314-2322, 2017

  The Institute of Electronics, Information and Communication Engineers

Keywords

• interference coordination
• pilot allocation
• heterogeneous network
• massive MIMO

Details

• CRID: 1390001206311754624
• NII Article ID: 130006191374
• DOI: 10.1587/transfun.e100.a.2314
• ISSN: 17451337
• ISSN: 09168508
• Web Site: https://www.jstage.jst.go.jp/article/transfun/E100.A/11/E100.A_2314/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed