Abstract
In vehicle wireless communications, channel characteristics vary rapidly due to the high velocity of the vehicle and rich surrounding scatters. To guarantee a reliable transmission, dynamic channel estimation needs to track the channel changes in the duration of a packet. Within the framework of IEEE802.11p standard, we propose a new channel estimation algorithm that combines data subcarriers and pilot subcarriers to equalize channel response in both frequency domain and time domain. Depending on the changes of the channel, the channel response can be further dynamically equalized by combining the channel response of previous OFDM symbols. Simulations show significant improvement in terms of packet error rate (PER) comparing to the existing methods with little additional computation.
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© 2013 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Jiang, H., Cai, S., Xiang, W., Qian, H. (2013). Dynamic Channel Estimation over Fast Time-varying Channel for Vehicle Wireless Communications. In: Qian, H., Kang, K. (eds) Wireless Internet. WICON 2013. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 121. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-41773-3_2
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DOI: https://doi.org/10.1007/978-3-642-41773-3_2
Publisher Name: Springer, Berlin, Heidelberg
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