Search Results - "Kulmer, Josef"

Harmonic Phase Estimation in Single-Channel Speech Enhancement Using Phase Decomposition and SNR Information by Mowlaee, Pejman, Kulmer, Josef

“…In conventional single-channel speech enhancement, typically the noisy spectral amplitude is modified while the noisy phase is used to reconstruct the enhanced…”
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Phase Estimation in Single-Channel Speech Enhancement: Limits-Potential by Mowlaee, Pejman, Kulmer, Josef

“…In this paper, we present an overview on the previous and recent methods proposed to estimate a clean spectral phase from a noisy observation in the context of…”
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Phase Estimation in Single Channel Speech Enhancement Using Phase Decomposition by Kulmer, Josef, Mowlaee, Pejman

“…Conventional speech enhancement methods typically utilize the noisy phase spectrum for signal reconstruction. This letter presents a novel method to estimate…”
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Single-Anchor Positioning: Multipath Processing With Non-Coherent Directional Measurements by Rath, Michael, Kulmer, Josef, Leitinger, Erik, Witrisal, Klaus

“…High-accuracy indoor radio positioning can be achieved by using (ultra) wideband (UWB) radio signals. Multiple fixed anchor nodes are needed to compute the…”
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Iterative joint MAP single-channel speech enhancement given non-uniform phase prior by Mowlaee, Pejman, Stahl, Johannes, Kulmer, Josef

“…Within the last three decades research in single-channel speech enhancement has been mainly focused on filtering the noisy spectral amplitude without that much…”
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Harmonic phase estimation in single-channel speech enhancement using von mises distribution and prior SNR by Kulmer, Josef, Mowlaee, Pejman

“…In single-channel speech enhancement the spectral amplitude of the noisy signal is often modified while the noisy spectral phase is directly employed for…”
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A probabilistic approach for phase estimation in single-channel speech enhancement using von mises phase priors by Kulmer, Josef, Mowlaee, Pejman, Watanabe, Mario Kaoru

“…In many artificial intelligence systems human voice is considered as the medium for information transmission. Human-machine communication by voice becomes…”
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5G Positioning and Mapping With Diffuse Multipath by Wen, Fuxi, Kulmer, Josef, Witrisal, Klaus, Wymeersch, Henk

“…5G mmWave communication is useful for positioning due to the geometric connection between the propagation channel and the propagation environment. Channel…”
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Anchorless Cooperative Tracking Using Multipath Channel Information by Kulmer, Josef, Leitinger, Erik, Grebien, Stefan, Witrisal, Klaus

“…Highly accurate location information is a key facilitator to stimulate future services for the commercial and public sectors. Positioning and tracking of…”
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Delay Estimation in Presence of Dense Multipath by Kulmer, Josef, Grebien, Stefan, Leitinger, Erik, Witrisal, Klaus

“…Exploiting single-shot channel measurements for estimating radio frequency channel parameters remains an active research topic. In presence of dense multipath,…”
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On the unimportance of phase-coherent measurements for beampattern-assisted positioning by Kulmer, Josef, Grebien, Stefan, Rath, Michael, Witrisal, Klaus

“…Accurate indoor radio positioning requires high-resolution measurements to either utilize or mitigate the impact of multipath propagation. This high resolution…”
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Range Estimation and Performance Limits for UHF-RFID Backscatter Channels by Grebien, Stefan, Kulmer, Josef, Galler, Florian, Goller, Michael, Leitinger, Erik, Arthaber, Holger, Witrisal, Klaus

“…The accuracy of time-of-flight-based ranging over ultra-high frequency (UHF) radio frequency identification (RFID) backscatter channels is fundamentally…”
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Tensor Decomposition Based Beamspace ESPRIT for Millimeter Wave MIMO Channel Estimation by Fuxi Wen, Garcia, Nil, Kulmer, Josef, Witrisal, Klaus, Wymeersch, Henk

“…We propose a search-free beamspace tensor-ESPRIT algorithm for millimeter wave MIMO channel estimation. It is a multidimensional generalization of…”
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High-accuracy positioning for indoor applications: RFID, UWB, 5G, and beyond by Witrisal, Klaus, Hinteregger, Stefan, Kulmer, Josef, Leitinger, Erik, Meissner, Paul

“…Highly accurate and reliable indoor positioning - at accuracy levels in the 10 cm range - will enable a large a number of innovative location-based…”
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Impact of Rough Surface Scattering on Stochastic Multipath Component Models by Kulmer, Josef, Wen, Fuxi, Garcia, Nil, Wymeersch, Henk, Witrisal, Klaus

“…Multipath-assisted positioning makes use of specular multipath components (MPCs), whose parameters are geometrically related to the positions of the…”
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5G Positioning and Mapping with Diffuse Multipath by Wen, Fuxi, Kulmer, Josef, Witrisal, Klaus, Wymeersch, Henk

“…5G mmWave communication is useful for positioning due to the geometric connection between the propagation channel and the propagation environment. Channel…”
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Using DecaWave UWB transceivers for high-accuracy multipath-assisted indoor positioning by Kulmer, Josef, Hinteregger, Stefan, Grosswindhager, Bernhard, Rath, Michael, Bakr, Mustafa S., Leitinger, Erik, Witrisal, Klaus

“…Robust indoor positioning and location awareness at a sub-meter accuracy typically require highly accurate radio channel measurements to extract precise…”
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Phase-processing for voice activity detection: A statistical approach by Stahl, Johannes, Mowlaee, Pejman, Kulmer, Josef

“…Conventional voice activity detectors (VAD) mostly rely on the magnitude of the complex valued DFT spectral coefficients. In this paper, the circular variance…”
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Bandwidth dependence of the ranging error variance in dense multipath by Hinteregger, Stefan, Leitinger, Erik, Meissner, Paul, Kulmer, Josef, Witrisal, Klaus

“…It is well known that the time-of-flight ranging performance is heavy influenced by multipath propagation within a radio environment. This holds in particular…”
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Cooperative localization and tracking using multipath channel information by Kulmer, Josef, Leitinger, Erik, Meissner, Paul, Hinteregger, Stefan, Witrisal, Klaus

“…Indoor environments are characterized by harsh multipath conditions. Multipath-assisted indoor navigation and tracking (MINT) exploits position-related…”
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