{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["006:55"], "contactPoint": {"fn": "Camillo Gentile", "hasEmail": "mailto:camillo.gentile@nist.gov"}, "description": "Millimeter-wave channel sounders are much more sensitive to phase drift than their microwave counterparts by virtue of shorter wavelength. This matters when coherently combining untethered channel measurements ? scanned over multiple antennas either electronically or mechanically in seconds, minutes, or even hours ? to obtain directional information. To eliminate phase drift, a synchronization cable between the transmitter and receiver is required, limiting deployment range and flexibility indoors, and precluding most outdoor and mobile scenarios. Instead, we propose a blind technique to calibrate for phase drift by post-processing the channel measurements; the technique is referred to as blind because it requires no reference signal and, as such, works even in non-line-of-sight conditions when the (reference) direct path goes undetected. To substantiate the technique, it was tested on real measurements collected with our 60-GHz virtual phased-array channel sounder, as well as through simulation. The technique was demonstrated robust enough to deal with the most severe case of phase drift (uniformly distributed phase) and in non-line-of-sight conditions.", "distribution": [{"accessURL": "https://doi.org/10.18434/mds2-2326", "title": "DOI Access for Blind Calibration of Phase Drift in Millimeter-Wave Channel Sounders"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/BlindCalibration.pdf", "mediaType": "application/pdf"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/BlindCalibration.pdf.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig1.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig1.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig2.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig2.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig4a.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig4a.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig4b.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig4b.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5a.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5a.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5b.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5b.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5c.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5c.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5d.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5d.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5e.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5e.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5f.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig5f.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig6a.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig6a.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig6b.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig6b.mat.sha256", "mediaType": "text/plain"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig7a.mat", "mediaType": "application/octet-stream"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-2326/Fig7a.mat.sha256", "mediaType": "text/plain"}], "identifier": "ark:/88434/mds2-2326", "issued": "2021-01-05", "keyword": ["5G", "beamforming", "clock drift", "mmWave", "phase coherence", "phased-array antennas"], "landingPage": "https://data.nist.gov/od/id/mds2-2326", "language": ["en"], "license": "https://www.nist.gov/open/license", "modified": "2020-06-11 00:00:00", "programCode": ["006:045"], "publisher": {"@type": "org:Organization", "name": "National Institute of Standards and Technology"}, "references": ["https://doi.org/10.1109/ACCESS.2020.3001852"], "theme": ["Advanced Communications:Wireless (RF)"], "title": "Blind Calibration of Phase Drift in Millimeter-Wave Channel Sounders"}