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http://dx.doi.org/10.5573/ieie.2017.54.3.3

Novel LTE based Channel Estimation Scheme for V2V Environment  

Chu, Myeonghun (NARO Space Center, Korea Aerospace Research Institute)
Moon, Sangmi (NARO Space Center, Korea Aerospace Research Institute)
Kwon, Soonho (NARO Space Center, Korea Aerospace Research Institute)
Lee, Jihye (NARO Space Center, Korea Aerospace Research Institute)
Bae, Sara (NARO Space Center, Korea Aerospace Research Institute)
Kim, Hanjong (School of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education)
Kim, Cheolsung (School of Electronics & Computer Engineering Chonnam National University)
Kim, Daejin (School of Electronics & Computer Engineering Chonnam National University)
Hwang, Intae (School of Electronics & Computer Engineering Chonnam National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.54, no.3, 2017 , pp. 3-9 More about this Journal
Abstract
Recently, in 3rd Generation Partnership Project(3GPP), there is a study of the Long Term Evolution(LTE) based vehicle communication which has been actively conducted to provide a transport efficiency, telematics and infortainment. Because the vehicle communication is closely related to the safety, it requires a reliable communication. Because vehicle speed is very fast, unlike the movement of the user, radio channel is rapidly changed and generate a number of problems such as transmission quality degradation. Therefore, we have to continuously updates the channel estimates. There are five types of conventional channel estimation scheme. Least Square(LS) is obtained by pilot symbol which is known to transmitter and receiver. Decision Directed Channel Estimation(DDCE) scheme uses the data signal for channel estimation. Constructed Data Pilot(CDP) scheme uses the correlation characteristic between adjacent two data symbols. Spectral Temporal Averaging(STA) scheme uses the frequency-time domain average of the channel. Smoothing scheme reduces the peak error value of data decision. In this paper, we propose the novel channel estimation scheme in LTE based Vehicle-to-Vehicle(V2V) environment. In our Hybrid Reliable Channel Estimation(HRCE) scheme, DDCE and Smoothing schemes are combined and finally the Linear Minimum Mean Square Error(LMMSE) scheme is applied to minimize the channel estimation error. Therefore it is possible to detect the reliable data. In simulation results, overall performance can be improved in terms of Normalized Mean Square Error(NMSE) and Bit Error Rate(BER).
Keywords
CDP; DDCE; HRCE; LTE; LMMSE; Smoothing; STA; V2V;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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