Comparison of low-complexity diversity schemes for dual-hop AF relaying systems

Fakhreddine Gaaloul*, Redha Radaydeh, Mohamed Slim Alouini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This paper investigates the performance of two low-complexity combining schemes, which are based on one- or two-phase observation, to mitigate multipath fading in dual-hop amplify-and-forward relaying systems. For the one-phase-based combining, a single-antenna station is assumed to relay information from a multiple-antenna transmitter to a multiple-antenna receiver, and the activation of the receive antennas is adaptively performed based on the second-hop statistics, regardless of the first-hop conditions. On the other hand, the two-phase-based combining suggests using multiple single-antenna stations between the multipleantenna transmitter and the single-antenna receiver, where the suitable set of active relays is identified according to the precombining end-to-end fading conditions. To facilitate comparisons between the two schemes, formulations for the statistics of the combined signal-to-noise ratio and some performance measures are presented. Numerical and simulation results are shown to clarify the tradeoff between the achieved diversity-array gain, the processing complexity, and the power consumption.

Original languageEnglish (US)
Article number6054066
Pages (from-to)826-833
Number of pages8
JournalIEEE Transactions on Vehicular Technology
Volume61
Issue number2
DOIs
StatePublished - Feb 2012

Keywords

  • Amplify-and-forward (AF) protocol
  • Dual-hop relaying
  • Low-complexity diversity combining
  • Multiple-antenna systems
  • Performance measures
  • Receive diversity
  • Transmit diversity

ASJC Scopus subject areas

  • Aerospace Engineering
  • Applied Mathematics
  • Electrical and Electronic Engineering
  • Automotive Engineering

Fingerprint

Dive into the research topics of 'Comparison of low-complexity diversity schemes for dual-hop AF relaying systems'. Together they form a unique fingerprint.

Cite this