Spectral, energy and economic efficiency of relay-aided cellular networks

Ivan Ku*, Cheng-Xiang Wang, John Thompson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


The authors investigate the relay-aided multicell multiple-input-multiple-output (MIMO) cellular network by comparing both the signal forwarding and interference forwarding relaying paradigms, each employing the adaptive MIMO relay scheme. The spectral, energy and economic efficiency values are utilised as key performance metrics. Furthermore, both radio frequency and circuit power consumption are considered in the energy calculation. They demonstrate that there is a tradeoff between spectral and energy efficiency. Thus, economic profitability is used to find a balance in the tradeoff as profitability is important to the long term deployment of a scheme. They introduce the economic efficiency metric which considers the inherent tradeoff as a complementary performance measure to obtain maximum economic profitability while maintaining gains in both spectral and energy efficiency.

Original languageEnglish
Pages (from-to)1476-1486
Number of pages11
JournalIET Communications
Issue number14
Publication statusPublished - 24 Sep 2013


  • cellular radio
  • MIMO communication
  • amplify and forward communication
  • decode and forward communication
  • relay networks (telecommunication)
  • telecommunication power management
  • amplify-and- forward
  • decode-and-forward
  • spectral value
  • energy value
  • economic profitability
  • energy calculation
  • circuit power consumption
  • radio frequency
  • key performance metrics
  • adaptive MIMO relay scheme
  • signal forwarding relaying paradigm
  • interference forwarding relaying paradigm
  • relay-aided multicell multiple input multiple output cellular network
  • economic efficiency


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