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Related papers: Modeling the Multipath Cross-Polarization Ratio fo…

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We combine the latest datasets obtained with different surveys to study the frequency dependence of polarized emission coming from Extragalactic Radio Sources (ERS). We consider data over a very wide frequency range starting from $1.4$ GHz…

Cosmology and Nongalactic Astrophysics · Physics 2019-03-27 G. Puglisi , V. Galluzzi , L. Bonavera , J. Gonzalez-Nuevo , A. Lapi , M. Massardi , F. Perrotta , C. Baccigalupi , A. Celotti , L. Danese

The polarized diffuse Galactic radio emission, mainly synchrotron emission, is expected to be one of the most relevant source of astrophysical contamination at low and moderate multipoles in cosmic microwave background polarization…

Astrophysics · Physics 2014-10-13 C. Burigana , L. La Porta

Sub-Terahertz (THz) frequencies between 100 GHz and 300 GHz are being considered as a key enabler for the sixth-generation (6G) wireless communications due to the vast amounts of unused spectrum. The 3rd Generation Partnership Project…

Signal Processing · Electrical Eng. & Systems 2022-03-09 Shihao Ju , Yunchou Xing , Ojas Kanhere , Theodore S. Rappaport

In the sixth-generation (6G), the extremely large-scale multiple-input-multiple-output (XL-MIMO) is considered a promising enabling technology. With the further expansion of array element number and frequency bands, near-field effects will…

Information Theory · Computer Science 2024-04-29 Haiyang Miao , Jianhua Zhang , Pan Tang , Lei Tian , Weirang Zuo , Qi Wei , Guangyi Liu

This paper proposes a belief propagation (BP)-based algorithm for sequential detection and estimation of multipath component (MPC) parameters based on radio signals. Under dynamic channel conditions with moving transmitter/receiver, the…

Information Theory · Computer Science 2022-05-24 Xuhong Li , Erik Leitinger , Alexander Venus , Fredrik Tufvesson

This paper presents a comprehensive derivation of single and multi-frequency large-scale path loss model parameters for the close-in (CI) free space reference distance, CI free space reference distance with cross-polarization (CIX),…

Information Theory · Computer Science 2025-09-10 Hitesh Poddar , Akhileswar Chowdary

The Galactic synchrotron emission is expected to be the most relevant source of astrophysical contamination in cosmic microwave background polarization measurements, at least at frequencies < 100 GHz and at angular scales > 30'. We present…

Astrophysics · Physics 2009-11-11 Laura La Porta , Carlo Burigana

Systematic effects that limit the achievable sensitivity of current low-frequency radio telescopes to the 21 cm signal are among the foremost challenges in observational 21 cm cosmology. The standard approach to retrieving the 21 cm signal…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-23 S. Munshi , L. V. E. Koopmans , F. G. Mertens , A. R. Offringa , S. A. Brackenhoff , E. Ceccotti , J. K. Chege , L. Y. Gao , S. Ghosh , M. Mevius , S. Zaroubi

Realistic propagation modeling requires a detailed understanding and characterization of the radio channel properties. This paper is based on channel sounder measurements with 1 GHz bandwidth at a carrier frequency of 5.7 GHz and particular…

Networking and Internet Architecture · Computer Science 2018-09-12 Kim Mahler , Wilhelm Keusgen , Fredrik Tufvesson , Thomas Zemen , Giuseppe Caire

This paper presents detailed radio propagation measurements for an indoor factory (InF) environment at 6.75 GHz and 16.95 GHz using a 1 GHz bandwidth channel sounder. Conducted at the NYU MakerSpace in the NYU Tandon School of Engineering…

Signal Processing · Electrical Eng. & Systems 2025-03-31 Mingjun Ying , Dipankar Shakya , Theodore S. Rappaport , Peijie Ma , Yanbo Wang , Idris Al-Wazani , Yanze Wu , Hitesh Poddar

Recent polarimetric surveys of extragalactic radio sources (ERS) at frequencies \nu>1GHz are reviewed. By exploiting all the most relevant data on the polarized emission of ERS we study the frequency dependence of polarization properties of…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-27 M. Tucci , L. Toffolatti

Distributed multiple-input multiple-output (MIMO), also known as cell-free massive MIMO, has emerged as a promising technology for sixth-generation (6G) wireless networks. This letter introduces an indoor channel measurement campaign…

Signal Processing · Electrical Eng. & Systems 2025-11-06 Yingjie Xu , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson

For a precise determination of the radio frequency (RF) properties of superconducting materials, a calorimetric measurement is carried out with the aid of a so-called Quadrupole Resonator (QPR). This procedure is affected by certain…

Accelerator Physics · Physics 2020-04-21 Piotr Putek , Shahnam Gorgi Zadeh , Marc Wenskat , Ursula van Rienen

This paper analyzes the frequency dependency of the radio propagation channel's root mean square (rms) delay spread (DS), based on the multi-frequency measurement campaigns in the mmMAGIC project. The campaigns cover indoor, outdoor, and…

We define 3 samples of extragalactic radio sources of type FRII, containing 26 objects in total. The control sample consists of 6C and 7C sources with radio powers of around 10e27 W\Hz at 151 MHz and redshifts of around z=1. The other…

Astrophysics · Physics 2009-11-10 J. A. Goodlet , C. R. Kaiser , P. N. Best , J. Dennett-Thorpe

We have studied the implications of high sensitivity polarization measurements of objects from the WMAP point source catalogue made using the VLA at 8.4, 22 and 43 GHz. The fractional polarization of sources is almost independent of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 R. A. Battye , I. W. A. Browne , M. W. Peel , N. J. Jackson , C. Dickinson

We investigate the statistical properties of the polarized emission of extragalactic radio sources and estimate their contribution to the power spectrum of polarization fluctuations in the microwave region. The basic ingredients of our…

Astrophysics · Physics 2009-11-07 D. Mesa , C. Baccigalupi , G. De Zotti , L. Gregorini , K. -H. Mack , M. Vigotti , U. Klein

We present polarization measurements of extragalactic radio sources observed during the Cosmic Microwave Background polarization survey of the Q/U Imaging Experiment (QUIET), operating at 43 GHz (Q-band) and 95 GHz (W-band). We examine…

In this article, two wide band high-efficiency metasurface structures as a linear-cross polarizer in transmission mode based on asymmetric split-ring resonators (ASRR) are proposed and tested to indicate that this is not a purely…

Polarization measurements provide strong constraints on models for emission from rotation-powered pulsars. We present multiwavelength polarization predictions showing that measurements over a range of frequencies can be particularly…

High Energy Astrophysical Phenomena · Physics 2017-05-24 Alice K. Harding , Constantinos Kalapotharakos