Energy-Efficient Design of MIMO Heterogeneous Networks with Wireless Backhaul

Howard H. Yang, Giovanni Geraci, Tony Q.S. Quek

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)


As future networks aim to meet the ever-increasing requirements of high-data rate applications, dense, and heterogeneous networks (HetNets) will be deployed to provide better coverage and throughput. Besides the important implications for energy consumption, the trend toward densification calls for more and more wireless links to forward a massive backhaul traffic into the core network. It is critically important to take into account the presence of a wireless backhaul for the energy-efficient design of HetNets. In this paper, we provide a general framework to analyze the energy efficiency of a two-tier MIMO heterogeneous network with wireless backhaul in the presence of both uplink and downlink transmissions. We find that under spatial multiplexing the energy efficiency of a HetNet is sensitive to the network load, and it should be taken into account when controlling the number of users served by each base station. We show that a two-tier HetNet with wireless backhaul can be significantly more energy efficient than a one-tier cellular network. However, this requires the bandwidth division between radio access links and wireless backhaul to be optimally designed according to the load conditions.

Original languageEnglish
Article number7445888
Pages (from-to)4914-4927
Number of pages14
JournalIEEE Transactions on Wireless Communications
Issue number7
Publication statusPublished - 2016 Jul

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Energy-Efficient Design of MIMO Heterogeneous Networks with Wireless Backhaul'. Together they form a unique fingerprint.

Cite this