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A distributed space-time-frequency (STF) coding scheme is proposed for cooperative OFDM (C-OFDM) systems with three terminals over quasi-static frequency-selective Rayleigh fading channels. The outage probability is derived and its tight closed-form lower bound is presented. Asymptotic analysis indicates that the proposed scheme can achieve both spatial and multipath (frequency) diversity. The theoretical analysis of the proposed STF coded scheme is further implemented by the distributed group STF block coding (D-GSTFBC) scheme based on the subcarrier grouping technique. Simulation results confirm the previously introduced theoretical analysis.
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Supported by the Open Research Fund of National Mobile Communications Research Laboratory, Southeast University (Grant No. N200814), the National Natural Science Foundation of China (Grant No. 60672079), and the National High-Tech Research & Development Program of China (Grant No. 2009AA01Z249)
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Yang, W., Cai, Y. & Wang, L. Distributed space-time-frequency coding for cooperative OFDM systems. Sci. China Ser. F-Inf. Sci. 52, 2424–2432 (2009). https://doi.org/10.1007/s11432-009-0221-7
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DOI: https://doi.org/10.1007/s11432-009-0221-7