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Peak to Mean Envelope Power Ratio of Oversampled OFDM Signals: an Analytical Approach

Sharif, Masoud and Khalaj, Babak H. (2001) Peak to Mean Envelope Power Ratio of Oversampled OFDM Signals: an Analytical Approach. In: 2001 IEEE International Conference on Communications. IEEE , Piscataway, NJ, pp. 1476-1480. ISBN 0-7803-7097-1.

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Orthogonal frequency division multiplexing (OFDM) has a large peak to mean envelope power ratio (PMEPR), which can result in significant signal distortion in the presence of nonlinear amplifiers. We show that the peak of the continuous envelope of the OFDM signal can be bounded by the maximum of the corresponding oversampled sequence. This fact is then used as the cornerstone of our two-part study. In the first part, statistical analysis is used to find the probability upper bound for the complementary cumulative distribution function of PMEPR. It is also proven that for a large number of subcarriers, only one redundant bit is necessary to limit the PMEPR within 10% of its maximum value. In the second part, PMEPR estimation using oversampling and the fast Fourier transform is revisited. Here, we introduce a novel measure on the estimation error using an oversampled OFDM signal.

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Additional Information:© 2001 IEEE. Date of Current Version: 07 August 2002. Special thanks goes to Dr. J. Salehi and Dr. Nasin-Kenari of Sharif University of Technology and the reviewers for their useful discussions and critical comments.
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INSPEC Accession Number7098765
Record Number:CaltechAUTHORS:20111117-145349116
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Official Citation:Sharif, M.; Khalaj, B.H.; , "Peak to mean envelope power ratio of oversampled OFDM signals: an analytical approach," Communications, 2001. ICC 2001. IEEE International Conference on , vol.5, no., pp.1476-1480 vol.5, 2001 doi: 10.1109/ICC.2001.937166
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27839
Deposited By: Jason Perez
Deposited On:21 Nov 2011 17:05
Last Modified:09 Nov 2021 16:52

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