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Eunseok Ko and Daesik Hong, "A Robust STBC-Based Transmit Diversity Scheme for OFDM Systems Over Spatially Transmit Correlated Fading Channels", IEEE Trans. Veh. Technol., Mar 2007
[IEEE Trans. Veh. Technol.]
조회 55692
Status : | Published |
---|---|
Date : | 2007-03 |
Title : | A Robust STBC-Based Transmit Diversity Scheme for OFDM Systems Over Spatially Transmit Correlated Fading Channels |
Authors : | Eunseok Ko and Daesik Hong |
Journal : | IEEE Transactions on Vehicular technology |
Abstract : | In this paper, we propose a robust space-time block coded (STBC)-based transmit diversity scheme with low decoding complexity against spatially transmit-correlated fading channels compared with the conventional STBC orthogonal frequency-division multiplexing (STBC-OFDM) schemes. The proposed scheme is comprised of Alamouti code for spatial diversity and a simple mapping process with subcarrier selection for frequency diversity. Proceeding from a detailed analysis of the rank and determinant of the channel correlation matrix, we present a proper subcarrier selection scheme satisfying the conditions for robustness against spatial transmit correlation. Furthermore, when the receiver employs a low-complexity decoder such as a zero-forcing decoder, the proposed scheme shows improved performance compared with the existing space-frequency coded OFDM schemes. |
URL : | http://A Robust STBC-Based Transmit Dive...g Channels |
Eunseok Ko; Daesik Hong; , "A Robust STBC-Based Transmit Diversity Scheme for
OFDM Systems Over Spatially Transmit Correlated Fading Channels," Vehicular
Technology, IEEE Transactions on , vol.56, no.2, pp.984-991, March
2007
doi: 10.1109/TVT.2007.891414
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4138029&isnumber=4137999
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