876 resultados para turbulence scheme


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Signed: George Bellby, director of fuel research.

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Mode of access: Internet.

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Mode of access: Internet.

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Cover title: The city of Calgary, past, present and future, by Thomas H. Mawson & Sons.

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Thesis (Master's)--University of Washington, 2016-06

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This paper presents a new low-complexity multicarrier modulation (MCM) technique based on lattices which achieves a peak-to-average power ratio (PAR) as low as three. The scheme can be viewed as a drop in replacement for the discrete multitone (DMT) modulation of an asymmetric digital subscriber line modem. We show that the lattice-MCM retains many of the attractive features of sinusoidal-MCM, and does so with lower implementation complexity, O(N), compared with DMT, which requires O(N log N) operations. We also present techniques for narrowband interference rejection and power profiling. Simulation studies confirm that performance of the lattice-MCM is superior, even compared with recent techniques for PAR reduction in DMT.