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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2008-07-07
Frequency Estimation by Pilot Set Partitioning for OFDM Systems with Multiple Transmit Antennas
By
Eu-Suk Shim,

    Dr. Eu-Suk Shim

    Sejong University

    Korea

    Homepage

Young-Hwan You,

    Dr. Young-Hwan You

    Sejong University

    Korea

    Homepage

Kyung-Taek Lee,

    Dr. Kyung-Taek Lee

    DxB Communication Convergence Research Center

    Korea Electronics Technology Institute

    Korea

    Homepage

Ki-Won Kwon

    Dr. Ki-Won Kwon

    DxB Communication Convergence Research Center

    Korea Electronics Technology Institute

    Korea

    Homepage

Progress In Electromagnetics Research M, Vol. 3, 193-204, 2008
doi:10.2528/PIERM08061201 | Google Scholar

Abstract
Cyclic delay diversity (CDD) is a simple approach to increase the frequency selectivity of the channel in an orthogonal frequency division multiplexing (OFDM) based transmission scheme. However, CDD can cause serious degradation in the performance of channel and frequency estimation in the frequency domain. This paper suggests a post-FFT frequency estimation scheme suitable for arbitrary cyclic delays in the CDD-OFDM system. By partitioning uncorrelated pilot subcarriers into subsets to be flat, and performing frequency estimation for each pilot subset, a robust integer frequency offset estimation scheme is derived.
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Citation
Eu-Suk Shim, Young-Hwan You, Kyung-Taek Lee, and Ki-Won Kwon, "Frequency Estimation by Pilot Set Partitioning for OFDM Systems with Multiple Transmit Antennas," Progress In Electromagnetics Research M, Vol. 3, 193-204, 2008.
doi:10.2528/PIERM08061201
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