Almost Diagonalization of $$\tau $$τ-Pseudodifferential Operators with Symbols in Wiener Amalgam and Modulation Spaces
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fourier Analysis and Applications"
DOI: 10.1007/s00041-018-09651-z
Abstract: In this paper we focus on the almost-diagonalization properties of $$\tau $$τ-pseudodifferential operators using techniques from time-frequency analysis. Our function spaces are modulation spaces and the special class of Wiener amalgam spaces arising by considering… read more here.
Keywords: diagonalization; modulation spaces; almost diagonalization; wiener amalgam ... See more keywords
Q-Next: A Fast, Parallel, and Diagonalization-Free Alternative to Direct Inversion of the Iterative Subspace.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of chemical theory and computation"
DOI: 10.1021/acs.jctc.2c00073
Abstract: As computer systems dedicated to scientific calculations become massively parallel, the poor parallel performance of the Fock matrix diagonalization becomes a major impediment to achieving larger molecular sizes in self-consistent field (SCF) calculations. In this… read more here.
Keywords: inversion iterative; diagonalization free; iterative subspace; direct inversion ... See more keywords
Hybrid Beamforming for Millimeter Wave Massive Multiuser MIMO Systems Using Regularized Channel Diagonalization
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2018.2886882
Abstract: This letter presents a novel hybrid analog-digital beamforming design for massive multiuser MIMO downlink transmission in sparse millimeter wave channels. The proposed hybrid regularized channel diagolnalization (HRCD) scheme combines analog (RF) phase-only beamforming with linear… read more here.
Keywords: multiuser mimo; diagonalization; regularized channel; millimeter wave ... See more keywords