Peak to average power ratio in amplitude clipped high order OFDM

N. Dinur, D. Wulich

Research output: Contribution to conferencePaperpeer-review

18 Scopus citations

Abstract

One of the main problems of Orthogonal Frequency Division Multiplexing (OFDM) is the large Peak-to-Average Power Ratio (PAPR) of the output signal, which demands linear behavior of the system over a large dynamic range. In this paper the performance of amplitude clipped high order OFDM is considered. Using a central limit theorem, the distribution of the OFDM signal is found to be asymptotically Gaussian when the order of the OFDM signal approaches infinity. An expression for the probability that the PAPR of the signal will exceed a given level is found, and using it an upper bound on the BER is derived. It is shown that when the clipping level approaches infinity faster than √ln M, then a zero BER penalty and arbitrarily large Peak-to-Average Power Ratio gain are asymptotically obtained. It is also shown that use of the asymptotic results for N≥32 causes a negligible error in practice.

Original languageEnglish
Pages684-687
Number of pages4
StatePublished - 1 Dec 1998
EventProceedings of the 1998 IEEE Military Communications Conference. Part 1 (of 3) - Bedford, MA, USA
Duration: 19 Oct 199821 Oct 1998

Conference

ConferenceProceedings of the 1998 IEEE Military Communications Conference. Part 1 (of 3)
CityBedford, MA, USA
Period19/10/9821/10/98

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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