Pulse or digital communications – Systems using alternating or pulsating current – Antinoise or distortion
Reexamination Certificate
2007-03-12
2010-12-07
Payne, David C (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Antinoise or distortion
Reexamination Certificate
active
07848446
ABSTRACT:
A single-carrier signal is generated from a number, N, of symbols in a way that results in a low PAPR. This includes generating an initial set of N complex frequency components from the N symbols. Nsdifferent sets of N complex frequency components are generated by, for each of Nstimes, permuting the initial set of N complex frequency components by one of Nspossible permutations. Nsdifferent sets of M complex frequency components are generated by mapping each of the Nsdifferent sets of N complex frequency components onto a set of M carrier frequencies. After shaping, an IDFT generates a candidate set of N time-domain symbols from each of the Nsdifferent sets of M complex frequency components. That one of the Nsdifferent candidate sets of N time-domain symbols that is associated with the smallest PAPR is selected for further processing.
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Haider Syed
Payne David C
Potomac Patent Group PLLC
Telefonaktiebolaget L M Ericsson (publ)
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