A Novel OFDM Channel Estimation Algorithm with ICI Mitigation over Fast Fading Channels
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Date
2010-06
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
Orthogonal frequency-division multiplexing (OFDM) is well-known as a high-bit-rate transmission technique, but the Doppler frequency offset due to the high speed movement destroys the orthogonality of the subcarriers resulting in the intercarrier interference (ICI), and degrades the performance of the system at the same time. In this paper a novel OFDM channel estimation algorithm with ICI mitigation based on the ICI self-cancellation scheme is proposed. With this method, a more accurate channel estimation is obtained by comb-type double pilots and then ICI coefficients can be obtained to mitigate the ICI on each subcarrier under the assumption that the channel impulse response (CIR) varies in a linear fashion. The theoretical analysis and simulation results show that the bit error rate (BER) and spectral efficiency performances are improved significantly under high-speed mobility conditions (350 km/h – 500 km/h) in comparison to ZHAO’s ICI self-cancellation scheme.
Description
Citation
Radioengineering. 2010, vol. 19, č. 2, s. 347-355. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2010/10_02_347_355.pdf
http://www.radioeng.cz/fulltexts/2010/10_02_347_355.pdf
Document type
Peer-reviewed
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Published version
Date of access to the full text
Language of document
en