Decision-Directed Channel Estimation for IEEE 802.11p Based V2X Communications 


Vol. 42,  No. 8, pp. 1513-1520, Aug.  2017
10.7840/kics.2017.42.8.1513


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  Abstract

In this paper, we propose a channel estimation scheme suitable for Vehicle-to-Everything (V2X) communication systems using high-order modulations. Under high speed environments, channel estimator based only on preamble and pilot symbols cannot track the variation of channel. To estimate rapidly time-varying channels, we propose a channel estimation scheme utilizing the symbols reencoded with the soft output generated within a channel decoder. In addition, to reduce the performance loss due to the noise enhancement within the channel estimator, the proposed scheme estimates the channels using the reencoded symbols whose magnitudes are larger than a threshold value. The proposed scheme offers reliable channel estimation performance under every channel environments considered.

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  Cite this article

[IEEE Style]

H. Kim, A. Lee, D. Kang, K. Park, W. Oh, "Decision-Directed Channel Estimation for IEEE 802.11p Based V2X Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 8, pp. 1513-1520, 2017. DOI: 10.7840/kics.2017.42.8.1513.

[ACM Style]

Haeun Kim, Arim Lee, Donghoon Kang, Kyeongwon Park, and Wangrok Oh. 2017. Decision-Directed Channel Estimation for IEEE 802.11p Based V2X Communications. The Journal of Korean Institute of Communications and Information Sciences, 42, 8, (2017), 1513-1520. DOI: 10.7840/kics.2017.42.8.1513.

[KICS Style]

Haeun Kim, Arim Lee, Donghoon Kang, Kyeongwon Park, Wangrok Oh, "Decision-Directed Channel Estimation for IEEE 802.11p Based V2X Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 8, pp. 1513-1520, 8. 2017. (https://doi.org/10.7840/kics.2017.42.8.1513)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880