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In this paper, we propose to use the fourth order cumulants to distinguish OFDM from single carrier signals. We show analytically the value of C40(N) and C42(N) as a function of the number of subcarriers of the OFDM signal and its SNR. By taking these values as an estimate of these cumulants, we compare it to the estimate of different single carrier modulation signals including SC-BC as it was given...
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