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In this paper, the authors investigate the secure transmission design with practical assumptions on the Channel State Information (CSI). Specifically, the CSI of the legitimate link is imperfectly estimated and the CSI of the eavesdropper is unknown to the legitimate users. They derive both a fixed-rate and an adaptiverate transmission schemes by explicitly considering the rate parameters of the wiretap code in the secure transmission design. The derived schemes achieve the maximum throughput subject to constraints on the secrecy performance against eavesdropping and the reliability performance against channel estimation error.
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