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Performance Analysis of Dual-Hop MBST-ADF Relay Networks Over Quasi-Static Rayleigh Fading Channels

  • Kim, Min-Chan (Dept. of Control and Instrumentation Engineering Korea National University of Transportation) ;
  • Lim, Sungmook (Dept. of Electronic Engineering Korea National University of Transportation) ;
  • Ko, Kyunbyoung (Dept. of IT Convergence and Dept. of Electronic Engineering Korea National University of Transportation)
  • Received : 2017.10.17
  • Accepted : 2018.03.27
  • Published : 2018.03.28

Abstract

The objective of this study was to derive approximate closed-form error rates for M-ary burst symbol transmission (MBST) of dual-hop adaptive decode-and-forward (ADF) cooperative relay systems over quasi-static Rayleigh fading channels. Within a burst, there are pilot symbols and data symbols. Pilot symbols are used for channel estimation schemes and each relay node's transmission mode selection schemes. At first, our focus was on ADF relay systems' error-events at relay nodes. Each event's occurrence probability and probability density function (PDF) were then derived. With error-event based approach, we derived a tractable form of PDF for combined signal-to-noise ratio (SNR). Averaged error rates were then derived as approximate expressions for arbitrary link SNR with different modulation orders and numbers of relays. Its accuracy was verified by comparison with simulation results.

Keywords

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Fig. 1. Block diagram of MBST-ADF Cooperative RelayNetworks (source(S), destination(D), relay(R)s)

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Fig. 2. Average Bit Error Rate versus SNR (dB) with respect todifferent M and L (L=1,2,4, NP=?,8, ND=1,32, M=2,4,8,16,64,?=3.76)

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Fig. 3. Average Symbol Error Rate versus SNR (dB) withrespect to different M and L (L=1,2,4, NP=?,8, ND=1,32,M=2,4,8,16,64, ?=3.76)

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Fig. 4. Average Burst Error Rate versus SNR (dB) with respectto different M and L (L=1,2,4, NP=?,8, ND=1,32,M=2,4,8,16,64, ?=3.76)

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Fig. 5. Goodput versus SNR (dB) with respect to different L(L=1,2,4, NP=?, ND=32, M=2,4,8,16,64, ?=3.76).

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