International Journal of Contents

The Korea Contents Association (한국콘텐츠학회)
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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
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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

E1CTBR_2018_v14n1_18_f0001.png 이미지

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)

E1CTBR_2018_v14n1_18_f0003.png 이미지

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)

E1CTBR_2018_v14n1_18_f0004.png 이미지

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)

E1CTBR_2018_v14n1_18_f0005.png 이미지

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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