A Study on DM-RS Structure for LTE V2V Communications 


Vol. 42,  No. 1, pp. 279-285, Jan.  2017


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  Abstract

The study on ‘support for V2V(Vehicle to Vehicle) services based on LTE sidelink" has been carried out in 3GPP RAN working group. The conventional LTE sidelink technology is not adequate for high speed V2V communications because the conventional DM-RS(Demodulation Reference signal) structure is developed for pedestrian environment. While the typical speed of pedestrian environment is 3km/h, that of V2V communications is 120 km/h and the information on channel estimation is not sufficient with legacy DM-RS structure. In this paper, improved DM-RS structures for V2V communications that have rapid channel variation are introduced and the performance of channel estimation accuracy is analyzed. Simulation results show that the performance improvement of channel estimation can be achieved based on extended sub-carrier spacing structure resulted from reduced inter-carrier interference. However, the extended sub-carrier spacing requires the longer cyclic prefix and higher overhead. As a results of considerations on DM-RS modification, the sub-carrier spacing is maintained and the high density of DM-RS is applied for V2V communications.

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  Cite this article

[IEEE Style]

J. Baek, J. Park, E. Hong, "A Study on DM-RS Structure for LTE V2V Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 1, pp. 279-285, 2017. DOI: .

[ACM Style]

Jung-Yeon Baek, Ji-Hye Park, and Een-Kee Hong. 2017. A Study on DM-RS Structure for LTE V2V Communications. The Journal of Korean Institute of Communications and Information Sciences, 42, 1, (2017), 279-285. DOI: .

[KICS Style]

Jung-Yeon Baek, Ji-Hye Park, Een-Kee Hong, "A Study on DM-RS Structure for LTE V2V Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 1, pp. 279-285, 1. 2017.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880