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Main Authors:	Tinnerberg, Lina, Iancu, Dumitra, Edfors, Ove, Liu, Liang, Alegría, Juan Vidal
Format:	Preprint
Published:	2024
Subjects:	Signal Processing
Online Access:	https://arxiv.org/abs/2411.19147
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Highly Parallel Singular Value Decomposition for Low-Latency MIMO Processing
by: Cheng, Sijia, et al.
Published: (2025)

Low-latency D-MIMO Localization using Distributed Scalable Message-Passing Algorithm
by: Iancu, Dumitra, et al.
Published: (2025)

Hardware Distortion Modeling for Panel Selection in Large Intelligent Surfaces
by: Sheikhi, Ashkan, et al.
Published: (2025)

A Scalable 256-Antenna Distributed MIMO Testbed with Real-Time Fully Digital Beamforming
by: Iancu, Dumitra, et al.
Published: (2026)

Large Intelligent Surfaces with Low-End Receivers: From Scaling to Antenna and Panel Selection
by: Sheikhi, Ashkan, et al.
Published: (2024)

Decentralized Multi-Antenna Architectures with Unitary Constraints
by: Alegría, Juan Vidal, et al.
Published: (2025)

Over-the-Air DPD and Reciprocity Calibration in Massive MIMO and Beyond
by: Sheikhi, Ashkan, et al.
Published: (2024)

Channel Orthogonalization with Reconfigurable Surfaces: General Models, Theoretical Limits, and Effective Configuration
by: Alegría, Juan Vidal, et al.
Published: (2024)

Zero-Forcing MU-MIMO Precoding under Power Amplifier Non-Linearities
by: Alegría, Juan Vidal, et al.
Published: (2025)

Multi-User XR Offloading via Massive MIMO: A System-Level Analysis using a Real-Life Dataset
by: Bárány, Love, et al.
Published: (2026)

Dimensionally-Efficient Transmission and Storage of Unitary Matrices
by: Alegría, Juan Vidal
Published: (2025)

Adaptive Attention-Based Model for 5G Radio-based Outdoor Localization
by: Yaman, Ilayda, et al.
Published: (2025)

Robust High Mobility NLOS UE Beamforming Strategy for Gigantic MIMO
by: Rull, Josep R. Fernández, et al.
Published: (2026)

RIS-Aided RSMA Improves the Latency vs. Energy Trade-off in the Finite Block Length MIMO Downlink
by: Soleymani, Mohammad, et al.
Published: (2026)

LuViRA Dataset Validation and Discussion: Comparing Vision, Radio, and Audio Sensors for Indoor Localization
by: Yaman, Ilayda, et al.
Published: (2023)

Trading Datarate for Latency in Quantum Communication
by: Amiri, Zuhra, et al.
Published: (2024)

Hybrid Generative Semantic and Bit Communications in Satellite Networks: Trade-offs in Latency, Generation Quality, and Computation
by: Huang, Chong, et al.
Published: (2025)

Bias-VarianceTrade-off in Kalman Filter-Based Disturbance Observers
by: Li, Shilei, et al.
Published: (2024)

On the BER vs. Bandwidth-Efficiency Trade-offs in Windowed OTSM Dispensing with Zero-Padding
by: Sui, Zeping, et al.
Published: (2024)

Revealing the Trade-off in ISAC Systems: The KL Divergence Perspective
by: Fei, Zesong, et al.
Published: (2024)

Orbital-Angular-Momentum Embedded Massive MIMO: Achieving Multiplicative Spectrum-Efficiency for mmWave Communications
by: Cheng, Wenchi, et al.
Published: (2024)

Resolution-Aliasing Trade-off in Near-Field Localisation
by: Sambon, Baptiste, et al.
Published: (2026)

The Communication and Computation Trade-off in Wireless Semantic Communications
by: Chen, Xuyang, et al.
Published: (2025)

Pinching-Antenna Systems-Assisted SWIPT: A Rate-Energy Trade-off Perspective
by: Yang, Qi, et al.
Published: (2025)

Integrated Sensing and Communication Signal Processing Based on Compressed Sensing Over Unlicensed Spectrum Bands
by: Liu, Haotian, et al.
Published: (2023)

The LuViRA Dataset: Synchronized Vision, Radio, and Audio Sensors for Indoor Localization
by: Yaman, Ilayda, et al.
Published: (2023)

A Unified Transformer Architecture for Low-Latency and Scalable Wireless Signal Processing
by: Kawai, Yuto, et al.
Published: (2025)

Goal-oriented Spectrum Sharing: Trading Edge Inference Power for Data Streaming Performance
by: Merluzzi, Mattia, et al.
Published: (2025)

Harnessing DRL for URLLC in Open RAN: A Trade-off Exploration
by: Sohaib, Rana Muhammad, et al.
Published: (2024)

Maximizing Spectrum Efficiency of Data-Carrying Reference Signals via Bayesian Optimization
by: Kato, Taiki, et al.
Published: (2025)

Trade-offs in Reliability and Performance Using Selective Beamforming for Ultra-Massive MIMO
by: Hamadouche, Anis, et al.
Published: (2024)

Fundamental Trade-off in Wideband Stacked Intelligent Metasurface Assisted OFDMA Systems
by: Li, Zheao, et al.
Published: (2025)

Fundamental Trade-offs in Quantized Hybrid Radar Fusion: A CRB-Rate Perspective
by: Chowdary, Akhileswar, et al.
Published: (2024)

On the Sensitivity of Active RIS Systems to CSI Errors: Joint Optimization and Performance Trade-off
by: Shalma, Mohamed, et al.
Published: (2026)

Near Field Tapering with Slepian Window: Balancing the Range Angle Sidelobe Trade off
by: Hussain, Ahmed, et al.
Published: (2025)

HAPS-ISAC for 6G: Architecture, Design Trade-offs, and a Practical Roadmap
by: Kanani, Parisa, et al.
Published: (2025)

Hybrid Radar Fusion with Quantization: CRB-Rate Trade-offs and ADC Dynamic Range
by: Chowdary, Akhileswar, et al.
Published: (2026)

Goal-Oriented Joint Source-Channel Coding: Distortion-Classification-Power Trade-off
by: Enttsel, Andriy, et al.
Published: (2025)

ISAC for AI: A Trade-off Framework Across Data Acquisition and Transfer in Federated Learning
by: Jiang, Lai, et al.
Published: (2026)

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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