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New results on the peak power of OFDM signals based on oversampling

Sharif, Masoud and Gharavi-Alkhansari, Mohammad and Khalaj, Babak H. (2002) New results on the peak power of OFDM signals based on oversampling. In: 2002 IEEE International Conference on Communications. IEEE , Piscataway, NJ, pp. 866-871. ISBN 0-7803-7400-2.

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In this paper, we introduce a new bound for the peak of the continuous envelope of an OFDM signal based on the maximum of its corresponding oversampled sequence, that is considerably tighter than the recent results presented in [4]. The proposed bound is then used as the basis of our study in two parts. In the first part, we find an upper bound for the regrowth of the peak of the digitally clipped oversampled sequence after discrete to continuous conversion. We also show that for oversampling rates greater than π/√2 , the peak regrowth percentage depends only on oversampling rate, regardless of the number of subcarriers. In the second part, we propose new and tight relative error bounds for computation of the peak power using two main methods: the oversampled inverse fast Fourier transform (IFFT) and the method introduced for coded systems by Tarokh and Jafarkhani [1].

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Additional Information:© 2002 IEEE. Date of Current Version: 07 August 2002.
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INSPEC Accession Number7387202
Record Number:CaltechAUTHORS:20111103-114741210
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Official Citation:Sharif, M.; Gharavi-Alkhansari, M.; Khalaj, B.H.; , "New results on the peak power of OFDM signals based on oversampling," Communications, 2002. ICC 2002. IEEE International Conference on , vol.2, no., pp. 866- 871 vol.2, 2002 doi: 10.1109/ICC.2002.996979 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27611
Deposited By: Tony Diaz
Deposited On:04 Nov 2011 15:56
Last Modified:09 Nov 2021 16:50

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