Comparison of FDR and HDR under adaptive modulation with finite-length queues

Taehoon Kwon, Youngju Kim, Daesik Hong

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

To identify the optimal duplex mode and maximize the offered gain in the relay system, we compare the performances of half-duplex relay (HDR) and full-duplex relay (FDR). Finite-state Markov chain (FSMC) models are presented, showing the joint effects of finite-length queues and adaptive modulation (AM) under uncorrelated Rayleigh fading channels. Transmission efficiency, packet loss rate, and delay are derived and compared based on these models. According to our results, FDR is superior to HDR in the low-signal-to-noise ratio (SNR) region but loses its advantage as the SNR increases. When the size of the queue is large enough, FDR can be superior to HDR, even in the high-SNR region.

Original languageEnglish
Article number6095385
Pages (from-to)838-843
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Volume61
Issue number2
DOIs
Publication statusPublished - 2012 Feb 1

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Adaptive Modulation
Adaptive modulation
Queue Length
Relay
Signal to noise ratio
Rayleigh fading
Packet loss
Fading channels
Markov processes
Markov Chain Model
Rayleigh Fading Channel
Packet Loss
Queue
Maximise

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

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abstract = "To identify the optimal duplex mode and maximize the offered gain in the relay system, we compare the performances of half-duplex relay (HDR) and full-duplex relay (FDR). Finite-state Markov chain (FSMC) models are presented, showing the joint effects of finite-length queues and adaptive modulation (AM) under uncorrelated Rayleigh fading channels. Transmission efficiency, packet loss rate, and delay are derived and compared based on these models. According to our results, FDR is superior to HDR in the low-signal-to-noise ratio (SNR) region but loses its advantage as the SNR increases. When the size of the queue is large enough, FDR can be superior to HDR, even in the high-SNR region.",
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Comparison of FDR and HDR under adaptive modulation with finite-length queues. / Kwon, Taehoon; Kim, Youngju; Hong, Daesik.

In: IEEE Transactions on Vehicular Technology, Vol. 61, No. 2, 6095385, 01.02.2012, p. 838-843.

Research output: Contribution to journalArticle

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