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Non-contiguous OFDM is a promising technique for cognitive radio systems. Nevertheless, the sidelobes of the OFDM-modulated tones cause the out-of-band power (OBP) which can induce large interference to the incumbent communication systems. Another major drawback of OFDM-based systems is the high peak-to-average power ratio (PAPR). In this paper, two algorithms are proposed to jointly reduce the OBP...
Non-contiguous OFDM technique can be used for the cognitive radio systems. The sidelobes of the OFDM-modulated tones cause the out-of-band power which can induce large interference to the incumbent communication systems. Another major drawback of OFDM-based systems is the high peak-to-average power ratio. In this paper, we propose a scheme to jointly reduce the out-of-band power and the peak-to-average...
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