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The continuous-time peak-to-average power ratio of OFDM signals using complex modulation schemes

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3 Author(s)
Wong, K.D. ; Dept. of Inf. Technol., Malaysia Univ. of Sci. & Technol., Petaling Jaya ; Man-On Pun ; Poor, H.V.

Computing the continuous-time peak-to-average- power ratio (PAPR) of OFDM signals is computationally challenging. The pioneering work by Tellambura applies only to OFDM signals using real-valued modulation schemes. In this paper, a practical technique for evaluating the continuous-time PAPR of OFDM signals using complex modulation is presented. Using the proposed scheme, it is confirmed that the four-time oversampled discrete-time PAPR is a good approximation of the continuous-time PAPR even for complex OFDM signals. Furthermore, the proposed scheme is employed to verify some existing analytical bounds on continuous PAPR in the literature.

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Communications, IEEE Transactions on  (Volume:56 ,  Issue: 9 )