Tootfinder

Scaling Wideband Massive MIMO Radar via Beamspace Dimension Reduction
Oveys Delafrooz Noroozi, Jiyoon Han, Wei Tang, Zhengya Zhang, Upamanyu Madhow
https://arxiv.org/abs/2508.11790

Scaling Wideband Massive MIMO Radar via Beamspace Dimension Reduction
We present an architecture for scaling digital beamforming for wideband massive MIMO radar. Conventional spatial processing becomes computationally prohibitive as array size grows; for example, the computational complexity of MVDR beamforming scales as O(N^3) for an N-element array. In this paper, we show that energy concentration in beamspace provides the basis for drastic complexity reduction, with array scaling governed by the O(NlogN) complexity of the spatial FFT used for beamspace transfo…

Lensing without mass: The matter density profile in cosmic voids from UNIONS
Hunter L. Martin, Michael J. Hudson, Alex Woodfinden, Lucie Baumont, Thomas de Boer, Pierre A. Burger, Jack Elvin-Poole, S\'ebastien Fabbro, Samuel Farrens, Sacha Guerrini, Axel Guinot, Fabian Hervas-Peters, Hendrik Hildebrandt, Martin Kilbinger, Ludovic van Waerbeke, Anna Wittje

Lensing without mass: The matter density profile in cosmic voids from UNIONS
We measure the distribution of matter contained within the emptiest regions of the Universe: cosmic voids. We use the large overlap between the Ultraviolet Near-Infrared Optical Northern Survey (UNIONS) and voids identified in the LOWZ and CMASS catalogues of the Baryon Oscillation Spectroscopic Survey (BOSS) to constrain the excess surface mass density of voids using weak lensing. We present and validate a novel method for computing the Gaussian component of the conventional weak lensing covar…

Sommer in der #wattpampa

Beam Squint Assisted Joint Angle-Distance Localization for Near-Field Communications
Aibiao Zhang, Weizheng Zhang, Chiya Zhang
https://arxiv.org/abs/2509.14850 https://

Beam Squint Assisted Joint Angle-Distance Localization for Near-Field Communications
With the advent of extremely large-scale MIMO (XL-MIMO), mmWave/THz bands and ultra-wideband transmission, future 6G systems demand real-time positioning with centimeter or even millimeter level accuracy. This paper addresses the pronounced near-field beam squint problem caused by phase shifter based beamforming in wideband near-field scenarios and proposes a beam squint assisted joint angle-distance localization scheme. The key idea is to employ true-time-delay (TTD) units together with phase …

“I have a hypothesis: all of these [Women in Tech] initiatives are operating in closed and exclusive spaces, which is sending a strong signal to the male majority with the power to affect real change that they are not welcome here, and it is not their problem to solve.” —@…

Why Women in Tech isn't enough
Women in Tech spaces help, but fall short in the long run. Real progress needs systemic change and active involvement from men in positions of power.

Replaced article(s) found for eess.AS. https://arxiv.org/list/eess.AS/new
[1/1]:
- A lightweight and robust method for blind wideband-to-fullband extension of speech
Jan B\"uthe, Jean-Marc Valin

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Device-Free Localization Using Commercial UWB Transceivers
Hyun Seok Lee
https://arxiv.org/abs/2507.13938 https://arxiv.org/pdf/2507.…

Device-Free Localization Using Commercial UWB Transceivers
Recently, commercial ultra-wideband (UWB) transceivers have enabled not only measuring device-to-device distance but also tracking the position of a pedestrian who does not carry a UWB device. UWB-based device-free localization that does not require dedicated radar equipment is compatible with existing anchor infrastructure and can be reused to reduce hardware deployment costs. However, it is difficult to estimate the target's position accurately in real-world scenarios due to the low signal-to…

Heurollerjagd mit Frau #Atelierhütehund in der Abendsonne in der #wattpampa.

Idylle herrscht in der #wattpampa.
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