KSII Transactions on Internet and Information Systems (TIIS)

Korean Society for Internet Information (한국인터넷정보학회)
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ODPM Channel Estimation Method using Multiple MRC and New Reliability Test in IEEE 802.11p Systems with Receive Diversity

  • Lim, Sungmook (Department of IT-Energy Convergence (BK21 FOUR) and Department of Electronics Engineering, Korea National University of Transportation) ;
  • Ryu, Gihoon (Department of IT-Energy Convergence (BK21 FOUR), Korea National University of Transportation) ;
  • Ko, Kyunbyoung (Department of IT-Energy Convergence (BK21 FOUR) and Department of Electronics Engineering, Korea National University of Transportation)
  • Received : 2021.08.10
  • Accepted : 2021.11.22
  • Published : 2021.12.31
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Abstract

In IEEE 802.11p-based wireless access in vehicular environments (WAVE) communication systems, channel estimation (CE) is one of the important issues to provide stable communication service. It is hard to apply conventional CE schemes based on data pilot to real systems, because error propagation occurs in high mobility and modulation order environments, resulting in degrading the CE performance. In this paper, we propose one data pilot using multiple receive antennas (ODPM) CE scheme based on the weighted sum using update matrix (WSUM) with time-domain averaging (TDA) to overcome this problem. Within the process of WSUM-TDA in the proposed scheme, the maximum ratio combining (MRC) technique is applied so as to create more accurate one data pilot. Moreover, a new reliability test criterion is proposed as the fashion of utilizing MRC, which makes it possible to apply selective TDA that guarantees performance improvement. In simulation results, the packet error rate (PER) performance of the proposed ODPM is compared with that of conventional CE methods and its superiority is demonstrated.

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References

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