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- Per Ola BÃ¶rjesson, Hans G. Feichtinger, +4 authors Lars-Erik Persson
- 1999

DMT-VDSL signals have a high peak-to-average power ratio (PAR). In the transmitters, the PAR governs the necessary resolution of the digital-to-analog converter (DAC) and is an important factor forâ€¦ (More)

The metaplectic representation describes a class of automorphisms of the Heisenberg group H = H(G), defined for a locally compact abelian group G. For G = R , H is the usual Heisenberg group. For theâ€¦ (More)

- Per Ola BÃ¶rjesson, Hans G. Feichtinger, +4 authors Lars-Erik Persson
- 1999

DMT (discrete multitone) signals have a high peak-toaverage power ratio (PAR). In the transmitters, the PAR governs the necessary resolution of the digitalto-analog converter (DAC) and is anâ€¦ (More)

The key result of this paper describes the fact that for an important class of pseudodifferential operators the property of invertibility is preserved under minor dilations of their Weyl symbols.â€¦ (More)

Many results and problems in Fourier and Gabor analysis are formulated in the continuous variable case, i.e., for functions on R. In contrast, a suitable setting for practical computations is theâ€¦ (More)

- Karlheinz GrÃ¶chenig, Augustus J. E. M. Janssen, Norbert Kaiblinger, GÃ¶tz E. Pfander
- IEEE Trans. Information Theory
- 2003

Let g be a continuous, compactly supported function on R such that the integer translates of g constitute a partition of unity. We show that the Gabor system (g, a, b), with window g and time-shiftâ€¦ (More)

The Segalâ€“Shaleâ€“Weil representation associates to a symplectic transformation of the Heisenberg group an intertwining operator, called metaplectic operator. We develop an explicit construction ofâ€¦ (More)

Results of Lind on Lehmerâ€™s problem include the value of the Lehmer constant of the finite cyclic group Z/nZ, for n â‰¤ 5 and all odd n. By complementary observations we determine the Lehmer constantâ€¦ (More)

- Christian Th. Klein, Norbert Kaiblinger, Peter Wolschann
- Journal of Computer-Aided Molecular Design
- 2002

A new type of 3D-QSAR descriptors is introduced. For each molecule under consideration an internal coordinate system is defined relative to molecular points, such as positions of atoms in theâ€¦ (More)

We study the structure of operators from the Schwartz space S(Rn) into the tempered distributions Sâ€²(R)n that commute with a discrete subgroup of translations. The formalism leads to simpleâ€¦ (More)