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This paper highlights the Space Time Frequency Block Codes (STFBC) that exploit both spatial, time and frequency diversity can be designed using Orthogonal Frequency Division Multiplexing (OFDM). Intermarried Interference (ICI) self-cancellation schemes were often employed in many OFDM systems as a simple and effective approach to suppress ICI caused by Carrier Frequency error (CFO). In this paper, the authors propose a space time frequency block coding technique MIMO-OFDM system with ICI self-cancellation of data conjugate method, which is capable of both error correction and ICI reduction produced by Frequency Offset (FO). Then, the system performance of the data-conjugate method with diversity techniques is compared with those of the data-conversion method.
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