1316 lines
96 KiB
Text
1316 lines
96 KiB
Text
<!DOCTYPE html>
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<html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/ dc: http://purl.org/dc/terms/ foaf: http://xmlns.com/foaf/0.1/ og: http://ogp.me/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# schema: http://schema.org/ sioc: http://rdfs.org/sioc/ns# sioct: http://rdfs.org/sioc/types# skos: http://www.w3.org/2004/02/skos/core# xsd: http://www.w3.org/2001/XMLSchema# ">
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<head>
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<a href="/ctl">Communications Technology Laboratory</a> /<a href="/ctl/spectrum-technology-and-research-division">Spectrum Technology and Research Division</a>
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<h1 class="nist-page__title">Shared Spectrum Metrology Group</h1>
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<p>In an increasingly congested electromagnetic spectrum, modern RF systems are being designed to operate in diverse environments filled with other devices that broadcast a wide variety of electromagnetic signals.</p>
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<img alt="Anachoic chamber control station" height="320" loading="lazy" src="/sites/default/files/styles/480_x_480_limit/public/images/2019/04/03/mark_hammer-nist-29mar19-anachoic-control-stationv2fx-master_800.jpg?itok=zgT65cdZ" typeof="foaf:Image" width="480">
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<figcaption class="nist-image__caption"></figcaption>
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</figure>
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<p>NIST CTL's Shared Spectrum Metrology Group develops metrology tools and methodologies to address the spectrum crunch. The group specializes in three core areas to rapidly address ever-changing <a href="https://www.nist.gov/programs-projects/trusted-spectrum-testing">spectrum sharing</a> challenges:</p>
|
||
|
||
<ul>
|
||
<li>Metrology for wireless systems: traceable and rigorous test methods for over-the-air testing of wireless systems</li>
|
||
<li>Wireless coexistence: the need to understand a system’s response and impact on the overarching RF environment</li>
|
||
<li>Spectrum sensing and monitoring: novel approaches merging thermal noise metrology with studies of distributed systems to address spectrum challenges such as wireless forensics</li>
|
||
</ul>
|
||
|
||
<p>The group supports the wireless industry's need for practical, rapid, and accurate test approaches by contributing to the development of standardized test methods for wireless devices. Examples include new test methods for cellular-enabled Internet-of-Things (IoT) devices, characterizing wireless coexistence, and millimeter-wave wireless technology, as well as standards where measurement science is lacking such as uncertainties in error-vector-magnitude measurements.</p>
|
||
|
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<p>In addition to our impact on the communications industry and its hundreds of millions of users, we support Federal and Defense incumbent users who are developing techniques for sharing or compressing their spectrum footprint. In this area in particular, our work continues to make significant contributions as a key technical resource for the <a href="https://www.nist.gov/ctl/nasctn">National Advanced Spectrum and Communications Test Network (NASCTN)</a>. The group’s research portfolio also investigates measurement challenges to improve the robustness, performance, and reliability of future wireless systems used in medical settings (e.g., operating rooms), manufacturing environments, stadiums, public-safety settings, utilities, and elsewhere.</p>
|
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|
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<figure class=" align-left nist-image" role="group">
|
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<div>
|
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|
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<img alt="Shared Spectrum Researchers - "The Source"" height="345" loading="lazy" src="/sites/default/files/styles/480_x_480_limit/public/images/2019/04/12/kate.png?itok=PLZ6NJHL" typeof="foaf:Image" width="480">
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</div>
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<figcaption class="nist-image__caption"></figcaption>
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</figure>
|
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|
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<p>The <a href="https://www.nist.gov/ctl/national-broadband-interoperability-test-bed-nbit">NIST Broadband Interoperability Testbed (NBIT)</a>, which our group operates, is a key asset in our coexistence and tiered-access spectrum sharing work. This work informs CTL's <a href="https://www.nist.gov/programs-projects/5g-beyond">Next-Generation 5G Wireless program</a>, with a special focus on millimeter-wave communications and massive MIMO. Beyond understanding the behavior of wireless systems themselves, the group supports industry’s need to characterize RF signal propagation behavior by co-leading the <a href="https://www.nist.gov/ctl/5g-mmwave-channel-model-alliance">5G mmWave Channel Model Alliance</a>, a nexus for global efforts to define the future radio channels through which next-generation 5G wireless will operate. We develop methods to verify the performance of channel measurement hardware and OTA test set-ups having a variety of different architectures. The ultimate goal of these and many of our other endeavors is to assess advanced wireless system behavior so that policymakers and industry leaders can make informed decisions based on NIST’s impartial analysis.</p>
|
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|
||
<h5>MAJOR ACTIVITIES</h5>
|
||
|
||
<p>The Shared Spectrum Metrology Group engages in the following major activities:</p>
|
||
|
||
<ul>
|
||
<li>Modulated-Signal Measurement and Traceability</li>
|
||
<li>Reverberation-Chamber Techniques for Wireless</li>
|
||
<li>Wireless Coexistence Impacts and Test Methods</li>
|
||
<li>Built-Environment Signal Propagation and Penetration</li>
|
||
<li>Wireless Spectrum Forensics</li>
|
||
<li>Shared Spectrum Algorithms and Systems</li>
|
||
<li>MIMO and Spectrum Sharing</li>
|
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</ul></div>
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</div>
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class="nist-block "
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>
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class="nist-block__title"
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> <div class="string">News and Updates</div>
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<div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-8a7ca1b0a536e6ada72fb7e273a5c5f24592dc6deaab0ec3a5a600d2c87b8804">
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<div>
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<article
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about="/news-events/news/2023/12/spotlight-feeding-your-machine-learning-system-good-data" typeof="schema:Article" class="nist-teaser"
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>
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<div class="nist-teaser__image">
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<div class="entity-reference"> <a href="/news-events/news/2023/12/spotlight-feeding-your-machine-learning-system-good-data" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2023/12/20/Bad_ML_meme.png?itok=LP6mYjHt" width="100" height="100" alt="Angry cat. Text reads: "When you feed your ML bad data"" typeof="foaf:Image" />
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<h3 class="nist-teaser__title"><a href="/news-events/news/2023/12/spotlight-feeding-your-machine-learning-system-good-data"><span property="schema:name">Spotlight: Feeding Your Machine Learning System With Good Data</span>
|
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</a></h3>
|
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<div class="nist-teaser__date">
|
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<div class="daterange"><time datetime="2023-12-14T12:00:00Z">December 14, 2023</time>
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</div>
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<div class="nist-teaser__content">
|
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<div property="schema:text" class="text-with-summary"> Om nom nom — what are you feeding your machine learning (ML) system? NIST researchers at the crossroads of communications technology and cybersecurity are
|
||
|
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</div>
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</div>
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</div>
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</article>
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<div>
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<article
|
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about="/news-events/news/2022/12/wi-fi-could-help-identify-when-youre-struggling-breathe" typeof="schema:Article" class="nist-teaser"
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>
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<div class="nist-teaser__image">
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<div class="entity-reference"> <a href="/news-events/news/2022/12/wi-fi-could-help-identify-when-youre-struggling-breathe" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2022/12/19/P1390983_Jason_manikin.jpg?itok=XZHqrcHj" width="100" height="56" alt="A model head and torso wearing a NIST T-shirt stands on a table in a small room with blue foam on the walls, while a researcher sets up equipment in the background." typeof="foaf:Image" />
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</a>
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</div>
|
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</div>
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<div class="nist-teaser__content-wrapper">
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<header>
|
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<h3 class="nist-teaser__title"><a href="/news-events/news/2022/12/wi-fi-could-help-identify-when-youre-struggling-breathe"><span property="schema:name">Wi-Fi Could Help Identify When You’re Struggling to Breathe </span>
|
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</a></h3>
|
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<div class="nist-teaser__date">
|
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<div class="daterange"><time datetime="2022-12-20T12:00:00Z">December 20, 2022</time>
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</div>
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</div>
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|
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</header>
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<div class="nist-teaser__content">
|
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<div property="schema:text" class="text-with-summary"> NIST and its FDA collaborators advanced a technique to use Wi-Fi to sense when someone’s breathing pattern changes, indicating they’re in trouble.
|
||
|
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</div>
|
||
|
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</div>
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</div>
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</article>
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</div>
|
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<div>
|
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<article
|
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about="/news-events/news/2022/07/spotlight-getting-wireless-devices-share-radio-spectrum-and-work-harmony" typeof="schema:Article" class="nist-teaser"
|
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>
|
||
<div class="nist-teaser__image">
|
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<div class="entity-reference"> <a href="/news-events/news/2022/07/spotlight-getting-wireless-devices-share-radio-spectrum-and-work-harmony" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2022/05/23/nbitanechoicchamber.jpg?itok=G-LpJUrs" width="100" height="66" alt="AnechoicChamber" typeof="foaf:Image" />
|
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</a>
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<header>
|
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<h3 class="nist-teaser__title"><a href="/news-events/news/2022/07/spotlight-getting-wireless-devices-share-radio-spectrum-and-work-harmony"><span property="schema:name">Spotlight: Getting Wireless Devices to Share the Radio Spectrum and Work in Harmony</span>
|
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</a></h3>
|
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<div class="nist-teaser__date">
|
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<div class="daterange"><time datetime="2022-07-22T12:00:00Z">July 22, 2022</time>
|
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|
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|
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</div>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
||
<div property="schema:text" class="text-with-summary"> All wireless systems rely on the same radio spectrum, an information superhighway that can get backed up when too many devices attempt to access it.
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
</article>
|
||
</div>
|
||
<div>
|
||
<article
|
||
about="/news-events/news/2021/08/encouraging-coexistence-nist-model-cuts-measurement-needs-spectrum-sharing" typeof="schema:Article" class="nist-teaser"
|
||
>
|
||
<div class="nist-teaser__image">
|
||
<div class="entity-reference"> <a href="/news-events/news/2021/08/encouraging-coexistence-nist-model-cuts-measurement-needs-spectrum-sharing" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2021/08/09/21CTL004_Rezac-by-Jacobson.jpg?itok=UhpjszJE" width="100" height="67" alt="Man with beard and glasses in light grey sweater sitting on the right looking at computer screen on the left, with mass of blue wires in the foreground." typeof="foaf:Image" />
|
||
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</a>
|
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</div>
|
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|
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</div>
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<div class="nist-teaser__content-wrapper">
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<header>
|
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<h3 class="nist-teaser__title"><a href="/news-events/news/2021/08/encouraging-coexistence-nist-model-cuts-measurement-needs-spectrum-sharing"><span property="schema:name">Encouraging Coexistence: NIST Model Cuts Measurement Needs for Spectrum Sharing by About 33%</span>
|
||
</a></h3>
|
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<div class="nist-teaser__date">
|
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<div class="daterange"><time datetime="2021-08-12T12:00:00Z">August 12, 2021</time>
|
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</div>
|
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|
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</div>
|
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|
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</header>
|
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<div class="nist-teaser__content">
|
||
<div property="schema:text" class="text-with-summary"> Researchers at the National Institute of Standards and Technology (NIST) have developed a modeling technique that can save time and money in estimating how to
|
||
|
||
</div>
|
||
|
||
</div>
|
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</div>
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|
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class="nist-block "
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|
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class="nist-block__title"
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> <div class="string">Publications</div>
|
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|
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|
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<div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-95cb4bcbf95dff82d0c5a4c125c8c2ef11cdc176c5bd606f33ea68e7c0703dc7">
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|
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<article
|
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about="/publications/spectrum-sensing-using-dispersive-delay-line-structure-real-time" class="nist-teaser"
|
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>
|
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<div class="nist-teaser__content-wrapper">
|
||
<header>
|
||
<h3 class="nist-teaser__title"><a href="/publications/spectrum-sensing-using-dispersive-delay-line-structure-real-time"><span>Spectrum Sensing Using Dispersive Delay Line Structure in Real-Time</span>
|
||
</a></h3>
|
||
<div class="nist-teaser__date">
|
||
<div class="daterange"><time datetime="2025-01-08T12:00:00Z">January 8, 2025</time>
|
||
</div>
|
||
|
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</div>
|
||
<div class="nist-teaser__type">
|
||
<div class="nist-field nist-field--label-inline text-long">
|
||
<div class="nist-field__label">Author(s)</div>
|
||
<div class="nist-field__item"><span class="nist-author">Sri Tarun Reddy Chilukury</span>, Aakash A. Sahai, Mark Golkowski, <span class="nist-author">Daniel Kuester</span></div>
|
||
</div>
|
||
|
||
</div>
|
||
|
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</header>
|
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<div class="nist-teaser__content">
|
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</div>
|
||
</div>
|
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</article>
|
||
|
||
</div>
|
||
<div>
|
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<article
|
||
about="/publications/wlan-protocols-identification-using-machine-learning-and-ensemble-models" class="nist-teaser"
|
||
>
|
||
<div class="nist-teaser__content-wrapper">
|
||
<header>
|
||
<h3 class="nist-teaser__title"><a href="/publications/wlan-protocols-identification-using-machine-learning-and-ensemble-models"><span>WLAN Protocols Identification Using Machine Learning and Ensemble Models</span>
|
||
</a></h3>
|
||
<div class="nist-teaser__date">
|
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<div class="daterange"><time datetime="2025-01-07T12:00:00Z">January 7, 2025</time>
|
||
</div>
|
||
|
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</div>
|
||
<div class="nist-teaser__type">
|
||
<div class="nist-field nist-field--label-inline text-long">
|
||
<div class="nist-field__label">Author(s)</div>
|
||
<div class="nist-field__item"><span class="nist-author">Akimun Jannat Alvina</span>, <span class="nist-author">Yao Ma</span>, Mark Golkowski</div>
|
||
</div>
|
||
|
||
</div>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
||
<div class="text-with-summary"> The growing demand for wireless communications has caused significant spectrum congestion, requiring multiple WLAN protocols to share limited spectrum resources
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
</article>
|
||
|
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|
||
<div>
|
||
<article
|
||
about="/publications/interference-analysis-wlan-and-5g-coexisting-fixed-satellite-services-6-ghz-band" class="nist-teaser"
|
||
>
|
||
<div class="nist-teaser__content-wrapper">
|
||
<header>
|
||
<h3 class="nist-teaser__title"><a href="/publications/interference-analysis-wlan-and-5g-coexisting-fixed-satellite-services-6-ghz-band"><span>Interference Analysis of WLAN and 5G Coexisting with Fixed Satellite Services in the 6 GHz Band</span>
|
||
</a></h3>
|
||
<div class="nist-teaser__date">
|
||
<div class="daterange"><time datetime="2024-12-06T12:00:00Z">December 6, 2024</time>
|
||
</div>
|
||
|
||
</div>
|
||
<div class="nist-teaser__type">
|
||
<div class="nist-field nist-field--label-inline text-long">
|
||
<div class="nist-field__label">Author(s)</div>
|
||
<div class="nist-field__item"><span class="nist-author">Nadia Yoza Mitsuishi</span>, <span class="nist-author">Yao Ma</span>, <span class="nist-author">Jason Coder</span></div>
|
||
</div>
|
||
|
||
</div>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
||
<div class="text-with-summary"> Due to the increasing demand for spectrum to support unlicensed technologies, the 6 GHz band was opened for unlicensed use in the United States in 2020
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
</article>
|
||
|
||
</div>
|
||
<div>
|
||
<article
|
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about="/publications/digital-signal-processing-time-series-spectrum-estimation" class="nist-teaser"
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>
|
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<div class="nist-teaser__content-wrapper">
|
||
<header>
|
||
<h3 class="nist-teaser__title"><a href="/publications/digital-signal-processing-time-series-spectrum-estimation"><span>On Digital Signal Processing of Time Series for Spectrum Estimation</span>
|
||
</a></h3>
|
||
<div class="nist-teaser__date">
|
||
<div class="daterange"><time datetime="2024-09-11T12:00:00Z">September 11, 2024</time>
|
||
</div>
|
||
|
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</div>
|
||
<div class="nist-teaser__type">
|
||
<div class="nist-field nist-field--label-inline text-long">
|
||
<div class="nist-field__label">Author(s)</div>
|
||
<div class="nist-field__item"><span class="nist-author">Dazhen Gu</span>, <span class="nist-author">Jake Rezac</span>, <span class="nist-author">Xifeng Lu</span>, <span class="nist-author">Dan Kuester</span></div>
|
||
</div>
|
||
|
||
</div>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
||
<div class="text-with-summary"> We present a study of power spectral density (PSD) estimation from data sampled in the time domain. This work was motivated by our recent development of digital
|
||
|
||
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|
||
|
||
</div>
|
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|
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<h2
|
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class="nist-block__title"
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> <div class="string">Awards</div>
|
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</h2>
|
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|
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<div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-9d26d0c2e339b9414b1dfdcfdd972daa0f3453b6659173d75f53422d04829671">
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<article
|
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about="/nist-awards/2020-bronze-medal-award-jason-coder-adam-wunderlich-michael-frey-daniel-kuester" class="nist-teaser"
|
||
>
|
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<div class="nist-teaser__content-wrapper">
|
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<header>
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||
<h3 class="nist-teaser__title"><a href="/nist-awards/2020-bronze-medal-award-jason-coder-adam-wunderlich-michael-frey-daniel-kuester"><span>2020 - Bronze Medal Award---Jason Coder, Adam Wunderlich, Michael Frey, Daniel Kuester, Azizollah Kord, Jolene Splett, John Ladbury, Robert Horansky, Duncan McGillivray</span>
|
||
</a></h3>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
||
<div class="string-long">For development and execution of complex factor screening of wireless emissions from LTE cellular devices to enable efficient use of scarce spectrum.</div>
|
||
|
||
</div>
|
||
</div>
|
||
</article>
|
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<article
|
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about="/nist-awards/2020-allen-v-astin-measurement-science-award-melissa-midzor-adam-wunderlich-duncan" class="nist-teaser"
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>
|
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<div class="nist-teaser__content-wrapper">
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<header>
|
||
<h3 class="nist-teaser__title"><a href="/nist-awards/2020-allen-v-astin-measurement-science-award-melissa-midzor-adam-wunderlich-duncan"><span>2020 - Allen V. Astin Measurement Science Award---Melissa Midzor, Adam Wunderlich, Duncan McGillivray, Michael Frey, Michael Souryal, John Ladbury, Azizollah Kord, Jason Coder, Jolene Splett, Daniel Kuester</span>
|
||
</a></h3>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
||
<div class="string-long">For pioneering innovative measurements and access to a national network of test facilities for the U.S. communications industry and federal operators.</div>
|
||
|
||
</div>
|
||
</div>
|
||
</article>
|
||
</div>
|
||
<div>
|
||
<article
|
||
about="/nist-awards/2019-bronze-medal-award-david-r-novotny-jeanne-quimby-kate-remley-richard-candell" class="nist-teaser"
|
||
>
|
||
<div class="nist-teaser__image">
|
||
<div class="entity-reference"> <a href="/nist-awards/2019-bronze-medal-award-david-r-novotny-jeanne-quimby-kate-remley-richard-candell" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/annual_award/2019bronze-candellquimbyremleynovotnycomposite_0.jpg?itok=7y6cY1zi" width="100" height="38" alt="Candell, Quimby, Remley, Novotny" typeof="foaf:Image" />
|
||
|
||
</a>
|
||
</div>
|
||
|
||
</div>
|
||
<div class="nist-teaser__content-wrapper">
|
||
<header>
|
||
<h3 class="nist-teaser__title"><a href="/nist-awards/2019-bronze-medal-award-david-r-novotny-jeanne-quimby-kate-remley-richard-candell"><span>2019 - Bronze Medal Award---David R. Novotny, Jeanne Quimby, Kate A. Remley, Richard Candell</span>
|
||
</a></h3>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
||
<div class="string-long">For innovative measurement methods and a first-ever guide that enables manufacturers to realize the benefits of wireless technologies in factories.</div>
|
||
|
||
</div>
|
||
</div>
|
||
</article>
|
||
</div>
|
||
<div>
|
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<article
|
||
about="/nist-awards/2019-william-p-slichter-award-nada-golmie-kate-remley" class="nist-teaser"
|
||
>
|
||
<div class="nist-teaser__image">
|
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<div class="entity-reference"> <a href="/nist-awards/2019-william-p-slichter-award-nada-golmie-kate-remley" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/annual_award/2019slichter-golmieremleycomposite_0.jpg?itok=OhyhuNhr" width="100" height="66" alt="Golmie, Remley" typeof="foaf:Image" />
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<div class="nist-teaser__content-wrapper">
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<header>
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<h3 class="nist-teaser__title"><a href="/nist-awards/2019-william-p-slichter-award-nada-golmie-kate-remley"><span>2019 - William P. Slichter Award---Nada Golmie, Kate A. Remley</span>
|
||
</a></h3>
|
||
|
||
</header>
|
||
<div class="nist-teaser__content">
|
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<div class="string-long">For leadership of the NIST 5G mmWave Channel Model Alliance to accelerate the development and deployment of next-generation communications technology.</div>
|
||
|
||
</div>
|
||
</div>
|
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</article>
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