SHERP

A Residual Frequency Offset Compensation Scheme for OFDM System via SAGE Algorithm

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Authors
Lee, Jong-Ho; Kim, Seong-Cheol
Issue Date
2005-09
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, vol. 1, pp. 573-577, 2005
Keywords
RFOICISAGEOFDM
Abstract
In this paper, we propose an iterative detection
scheme in the presence of residual frequency offset (RFO) for
orthogonal frequency-division multiplexing (OFDM) system
using the space-alternating generalized expectation-maximization
(SAGE) algorithm. In the proposed algorithm, the expectation
step intends to remove the inter-carrier interferences (ICI) due to
RFO in the received signals. Then, the maximization step is
utilized to estimate the required parameters (i.e. RFO, data
symbols and channel state information) using the ICI canceled
signals. Simulation results present that the proposed algorithm
shows almost ideal performance as long as the normalized RFO
value is within 0.2.
Language
English
URI
http://hdl.handle.net/10371/7721
DOI
https://doi.org/10.1109/VETECF.2005.1557977
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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