Channel Estimation for LTE Uplink in High Doppler Spread

Long term evolution (LTE) systems are expected to use single carrier frequency division multiple access (SC-FDMA) for the uplink. Being very similar to the OFDMA technology, SC-FDMA is sensitive to frequency offsets, which leads to inter-carrier interference (ICI). In this paper, we propose an inter...

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Bibliographic Details
Published in2008 IEEE Wireless Communications and Networking Conference pp. 1126 - 1130
Main Authors Karakaya, B., Arslan, H., Cirpan, H.A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2008
Subjects
3G mobile communication
Channel estimation
Discrete Fourier transforms
Doppler shift
Frequency domain analysis
Interpolation
Least squares approximation
OFDM
Peak to average power ratio
Polynomials
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ISBN1424419972
9781424419975
ISSN1525-3511
DOI10.1109/WCNC.2008.203

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Summary:Long term evolution (LTE) systems are expected to use single carrier frequency division multiple access (SC-FDMA) for the uplink. Being very similar to the OFDMA technology, SC-FDMA is sensitive to frequency offsets, which leads to inter-carrier interference (ICI). In this paper, we propose an interpolation algorithm based on adaptive order polynomial fitting for LTE uplink channel estimation to mitigate ICI in high Doppler spread. Simulation results show that the proposed method has better performance compared to the conventional schemes.
ISBN:1424419972
9781424419975
ISSN:1525-3511
DOI:10.1109/WCNC.2008.203