Channel Estimation in Spatially Correlated High Mobility MIMO-OFDM Systems
Conference: ISWCS 2013 - The Tenth International Symposium on Wireless Communication Systems
08/27/2013 - 08/30/2013 at Ilmenau, Deutschland
Proceedings: ISWCS 2013
Pages: 5Language: englishTyp: PDF
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Authors:
Suárez-Casal, Pedro; García-Naya, José A.; Castedo, Luis (Dept. of Electronics and Systems, University of A Coru˜na, Spain)
Rupp, Markus (Institute of Telecommunications, Vienna University of Technology, Austria)
Abstract:
MIMO-OFDM is a transmission method very sensitive to the channel time-variations arising in high mobility scenarios due to the appearance of inter-carrier interference (ICI). In this paper we propose an algorithm for channel estimation in MIMO-OFDM systems that uses a Basis Expansion Model that exploits temporal, frequency and spatial correlations within the wireless channel in high mobility scenarios. The advantage of the proposed approach is that it does not require a specific pilot subcarrier structure to estimate the ICI and is suitable for its implementation in currently standardized MIMO-OFDM radio interfaces.