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Title: Low Complexity Channel Estimation Method for IEEE 802.11p Vehicle Communications
Authors: Chi-Min Li
Feng-Ming Wu
Contributors: 國立臺灣海洋大學:通訊與導航工程學系
Date: 2016
Issue Date: 2017-01-25T08:04:05Z
Publisher: INC2016
Abstract: Abstract: Modern Intelligent Transportation System (ITS)
uses the wireless communication technologies to increase the
traffic safety and the transportation efficiency. However, the
doppler effect and the multipath fading problems severely
attenuate the received signal in the vehicle communication
environments. Therefore, channel estimation is a critical issue
should be solved properly to improve the Bit Error Rate (BER)
performance at the receiver. Basically, ITS adopted the
IEEE802.11p standard as its protocol and it defines the preamble
with a specific format to conduct the channel estimation. Besides,
four pilot subcarriers transmitted along with the Orthogonal
Frequency Division Multiplexing (OFDM) system can also be
used during the channel estimation. In this paper, a low
computational complexity channel estimation method is proposed
for the IEEE802.11p vehicle communications. The proposed
method belongs to the frequency domain channel estimation and
uses the preamble and pilot subcarriers defined in IEEE802.11p
for the initial estimation and the time-varying adjustment for the
channel. The method has the low-complexity advantage and a
satisfactory BER performance compared with the related Cyclic
Prefix (CP) based channel estimation method.
Appears in Collections:[Department of Communications Navigation and Control Engineering] Lecture & Seminar

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