Hopping pilots for estimation of frequency-offset and multiantenna channels in MIMO-OFDM

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We design pilot-symbol-assisted modulation for carrier frequency offset (CFO) and channel estimation in orthogonal frequency-division multiplexing transmissions over multi-input multi-output frequency-selective fading channels. The CFO and channel-estimation tasks rely on null-subcarrier and nonzero pilot symbols that we insert and hop from block to block. Because we separate CFO and channel estimation from symbol detection, the novel training patterns lead to further decoupled CFO and channel estimators. The performance of our algorithms is investigated analytically, and then compared with an existing approach by simulations.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2005-01
Language
English
Article Type
Article; Proceedings Paper
Keywords

FADING CHANNELS; SYSTEMS; TRANSMISSIONS; TIME

Citation

IEEE TRANSACTIONS ON COMMUNICATIONS, v.53, no.1, pp.162 - 172

ISSN
0090-6778
DOI
10.1109/TCOMM.2004.840663
URI
http://hdl.handle.net/10203/91231
Appears in Collection
EE-Journal Papers(저널논문)
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