Alpha Imaging’s Post

This paper considers the problem of beam alignment in a #cell-#free #massive #MIMO deployment with multiple access points (APs) and multiple user equipments (UEs) simultaneously operating in the same millimeter wave frequency band. Assuming the availability of a control channel at sub-6 GHz frequencies, a protocol is developed that permits estimating, for each UE, the strongest propagation path from each of the surrounding APs, and to perform user-centric association between the UEs and the APs. Estimation of the strongest paths from nearby APs is realized at the UE in a one-phase procedure, during which all the APs simultaneously transmit on pseudo-randomly selected channels with pseudo-random transmit beamformers. ---- Stefano Buzzi, Carmen D'Andrea, Maria Fresia More details can be found at this link: https://lnkd.in/gH-ckMt2

If you need to understand more about international certification requirements for radio devices, you might be interested in our latest white paper by experts Nima Molaei and Jody House. Although different geographies have different requirements, there are important overlaps that can save you time during testing. Learn more in our resource center at the link below. #ProductCompliance #RadioTesting #RFTesting #ElementInConnectedTech https://ow.ly/bmm550SrEjo

This paper considers the problem of beam alignment in a #cell-#free #massive #MIMO deployment with multiple #access #points (#APs) and multiple user equipments (UEs) simultaneously operating in the same millimeter wave frequency band. Assuming the availability of a control channel at sub-6 GHz frequencies, a protocol is developed that permits estimating, for each UE, the strongest propagation path from each of the surrounding APs, and to perform user-centric association between the UEs and the APs. Estimation of the strongest paths from nearby APs is realized at the UE in a one-phase procedure, during which all the APs simultaneously transmit on pseudo-randomly selected channels with pseudo-random transmit beamformers. ---- Stefano Buzzi, Carmen D'Andrea, Maria Fresia, Xiaofeng Wu More details can be found at this link: https://lnkd.in/gH-ckMt2

Are you heading to Small Cells World Summit tomorrow? 📣 At 14:30, Mark Toman will be exploring what’s happening with edge services and what it means for our industry. Don't forget, you can then listen to Ali Akhtar in the panel discussion 5G mmWave use cases at 15:10 - 15:30. Leave a comment if you will be there 💬 👇 Small Cells World Summit Small Cell Forum #Edge #DataCentres #SmallCells #5G

From digital stethoscopes to pocket-sized ECGs and portable ultrasounds, the diagnostics potential you can carry in your bag is amazing these days. In this article, we've listed 7 technologies that could come in handy to any doctor in the 21st century. Would you add anything to the list? https://lnkd.in/eJWamwbE

I would like to share my presentation about PICCO monitoring system for monitoring Cardiac output by picco technology

🛠️ On-Site Signal Testing 📡 We recently teamed up with Paul from 𝗣𝗿𝗼𝗲𝘆𝗲 𝗧𝗲𝗹𝗲𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 to conduct a thorough site survey at a hospital experiencing significant signal black spots. Here's what we did: 𝗦𝗶𝗴𝗻𝗮𝗹 𝗪𝗮𝗹𝗸 𝗧𝗲𝘀𝘁: We kicked things off with a walk test throughout the hospital using the Viavi Ona 800 📡 and the Nextivity Cell Compass XR 📲. This helped us identify those tricky areas with weak or no signal. 𝟴𝟬𝟬𝗠𝗛𝘇 𝗦𝗶𝗴𝗻𝗮𝗹 𝗗𝗲𝘁𝗲𝗰𝘁𝗶𝗼𝗻: Despite managements initial concerns about phone system availability, we were still detecting the 800MHz signal (3G) in those black spots. 🎯 This is crucial—it means the infrastructure is already in place. All that's needed is an upgrade to a 4G DAS. 𝗨𝗽𝗴𝗿𝗮𝗱𝗲 𝗣𝗹𝗮𝗻: To eliminate those black spots, we’re upgrading the DAS repeater head-end unit 🚀. This will provide stronger, more reliable coverage across the entire hospital, wiping out dead zones and ensuring everyone stays connected. Improving connectivity in critical environments like hospitals is what we do best. Stay tuned as we continue to optimise and enhance signal strength where it matters most! 💪 #EarthAndEnergy #ProeyeTelecommunications #SiteSurvey #Hospital #TechSolutions #StayConnected #ViaviOna800 #NextivityCellCompassXR #4G #3Gclosure #5G #DAS #DASRepeaters

🔍 Curious about what makes a radiometer spin? Join me in my latest video as we explore the science behind this fascinating device. Learn how it converts light into motion and what it tells us about energy and radiation. Check out the full video for a deeper dive! https://lnkd.in/dxM5M-kz  #Radiometer #PhysicsExplained #STEMEducation #ProfessorMattW #ScienceInAction #LearnWithMe #InnovativeTeaching

Signal quality can make all the difference when viewing ICM recordings, so why not take advantage of the ICM device that delivers the best? The longer sensing vector of BIOMONITOR IV provides 56% larger R-waves than competitive devices.¹ Learn more about BMIV: https://ow.ly/Lhzt50SlPFL #BIOTRONIKCares #EPeeps

Discover the unsung hero of handover, mesh, and other test systems with Vaunix's latest tech brief on matrix attenuators! 📡 Unlock insights into their crucial role in RF testing and optimization. Dive into the details here: https://brnw.ch/21wGNEn #RFTesting #MatrixAttenuators #VaunixTech #RFEngineering