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In multi-hop cooperative communications, multiple relay stations are used at each hop in order to enhance transmission performance. In previous studies, transceivers for multi-hop cooperative communications using space-time block code have been developed in order to evaluate the transmission performance in real propagation channels. In this paper, an experiment involving multi-hop cooperative networks is conducted with transceivers. The transceivers are implemented on field programmable gate arrays, which perform real-time signal processing. Synchronization of the timing and carrier frequency among wireless stations is carried out on the basis of received signals.
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