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Asymptotic limits in peak envelope power reduction by redundant coding in orthogonal frequency-division multiplex modulation

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3 Author(s)
Shepherd, S. ; Telecommun. Res. Centre, Bradford Univ., UK ; Orriss, J. ; Barton, S.

This paper uses some computational results to show that the peak envelope power (PEP) of orthogonal frequency-division multiplex (OFDM) waveforms can be reduced very substantially by coding to select only those messages with low peak factor as valid codewords in the scheme. It is shown that the asymptotic limit of the PEP is between two and three, and that only four bits of redundancy are necessary to limit the PEP to within 10% of this optimum value as the number of carriers becomes large

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Communications, IEEE Transactions on  (Volume:46 ,  Issue: 1 )