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This paper proposes a joint spectral sensing and secondary data transmission scheme in a decode-and-forward (DF) relay assisted cognitive radio network (CRN). Periodic spectral sensing is done in each frame that primarily consists of two slots: sensing slot and data transmission slot. Sensing information of cognitive source (CS) and cognitive relay (CR) are cooperatively combined at CS to determine...
This paper proposes a joint spectral sensing and secondary data transmission scheme in decode and forward relay assisted cognitive radio networks (CRNs). Sensing information of cognitive source (CS) and cognitive relay (CR) are cooperatively combined at CS to determine the possible presence of primary user (PU). An optimization framework is developed to determine the sensing time, data transmission...
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