Position Locationing for Millimeter Wave Systems

Kanhere, Ojas; Rappaport, Theodore S.

doi:10.1109/glocom.2018.8647983

Cited by 74 publications

(51 citation statements)

References 28 publications

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“…The FCC initiated a proceeding (ET Docket No. [18][19][20][21] to expand access to spectrum above 95 GHz for new services and technologies in February 2018 [25]. The notice of proposed rulemaking aims to seek comments on adopting rules for fixed point-to-point use of up to 102.2 GHz of licensed spectrum, making up to 15.2 GHz of spectrum available for unlicensed use, and creating a new category of experimental licenses for the 95 GHz to 3 THz range.…”

Section: Moving To 6g and Frequencies Above 100 Ghzmentioning

confidence: 99%

“…The immense bandwidths at mmWave and THz frequencies can enable future indoor and outdoor mobile networks as well as rural macrocell (RMa) point-to-point copper replacement over very large distances [15], [16]. For example, there is 60 GHz of spectrum in D-band (110 GHz to 170 GHz) and when allocated for high-speed wireless links, this large bandwidth has potential applications in "wireless fiber" backhaul for fixed links, indoor/WiFi access, mobile communication, precision positioning, velocity sensors, passive mmWave cameras, vehicular communication, navigation, radar, and on-body communication for health monitoring systems [17]- [19].…”

Section: Introductionmentioning

confidence: 99%

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Propagation Measurement System and Approach at 140 GHz-Moving to 6G and Above 100 GHz

Xing¹,

Rappaport²

2018

2018 IEEE Global Communications Conference (GLOBECOM)

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220

171

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With the relatively recent realization that millimeter wave frequencies are viable for mobile communications, extensive measurements and research have been conducted on frequencies from 0.5 to 100 GHz, and several global wireless standard bodies have proposed channel models for frequencies below 100 GHz. Presently, little is known about the radio channel above 100 GHz where there are much wider unused bandwidth slots available. This paper summarizes wireless communication research and activities above 100 GHz, overviews the results of previously published propagation measurements at D-band (110-170 GHz), provides the design of a 140 GHz wideband channel sounder system, and proposes indoor wideband propagation measurements and penetration measurements for common materials at 140 GHz which were not previously investigated.

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Section: Moving To 6g and Frequencies Above 100 Ghzmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Propagation Measurement System and Approach at 140 GHz-Moving to 6G and Above 100 GHz

Xing¹,

Rappaport²

2018

2018 IEEE Global Communications Conference (GLOBECOM)

Self Cite

220

171

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“…The partition loss describes the how the signal power changes after a partition in the radio link. Wideband mmWave and Terahertz networks, as well as precise ray-tracer algorithms, will require accurate channel models that predict the partition loss induced by common building objects [19], [27], [28]. Therefore, partition loss of common building materials needs to be extensively investigated for 5G mmWave wireless systems and future Terahertz wireless communications in and around buildings.…”

Section: Scattering At Mmwave and Thzmentioning

confidence: 99%

“…The measurements were conducted with both co-polarized and cross-polarized antennas, and for each TX-RX combination, 3 elevation angles at both TX and RX were chosen (boresight, up tilted by 8°, and down tilted by 8°, which cover 95% of the total power [31]) and both TX and RX rotated 360°in azimuth by 8°/step to cover the entire azimuth plane [29]. In the meantime, indoor ray tracing techniques will be used to assist the measurements and will produce simulations together with the measurements to provide an accurate stochastic indoor channel model across different frequencies and various bandwidth [27], [28]. Fig.…”

Section: Indoor Propagation Measurements and Pathmentioning

confidence: 99%

Indoor Wireless Channel Properties at Millimeter Wave and Sub-Terahertz Frequencies

Xing¹,

Kanhere²,

Ju³

et al. 2019

2019 IEEE Global Communications Conference (GLOBECOM)

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108

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This paper provides indoor reflection, scattering, transmission, and large-scale path loss measurements and models, which describe the main propagation mechanisms at millimeter wave and Terahertz frequencies. Channel properties for common building materials (drywall and clear glass) are carefully studied at 28, 73, and 140 GHz using a wideband sliding correlation based channel sounder system with rotatable narrow-beam horn antennas. Reflection coefficient is shown to linearly increase as the incident angle increases, and lower reflection loss (e.g., stronger reflections) are observed as frequencies increase for a given incident angle. Although backscatter from drywall is present at 28, 73, and 140 GHz, smooth surfaces (like drywall) are shown to be modeled as a simple reflected surface, since the scattered power is 20 dB or more below the reflected power over the measured range of frequency and angles. Partition loss tends to increase with frequency, but the amount of loss is material dependent. Both clear glass and drywall are shown to induce a depolarizing effect, which becomes more prominent as frequency increases. Indoor propagation measurements and large-scale indoor path loss models at 140 GHz are provided, revealing similar path loss exponent and shadow fading as observed at 28 and 73 GHz. The measurements and models in this paper can be used for future wireless system design and other applications within buildings for frequencies above 100 GHz.

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“…In line-of-sight (LOS) environments, the time of flight (ToF) of a signal can be used to estimate the transmitter (TX) -receiver (RX) separation distance d (since d = c · t, where c is the speed of light and t is the ToF). The RX's position may then be estimated by trilateration [1]. In non-LOS (NLOS) environments, ranging based on ToF alone introduces a positive bias in the position estimates since the path length of reflected multipath rays is longer than the true distance between the user and the BS.…”

Section: Introductionmentioning

confidence: 99%

Map-Assisted Millimeter Wave Localization for Accurate Position Location

Kanhere¹,

Ju²,

Xing³

et al. 2019

2019 IEEE Global Communications Conference (GLOBECOM)

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Accurate precise positioning at millimeter wave frequencies is possible due to the large available bandwidth that permits precise on-the-fly time of flight measurements using conventional air interface standards. In addition, narrow antenna beamwidths may be used to determine the angles of arrival and departure of the multipath components between the base station and mobile users. By combining accurate temporal and angular information of multipath components with a 3-D map of the environment (that may be built by each user or downloaded a-priori), robust localization is possible, even in non-line-of-sight environments. In this work, we develop an accurate 3-D ray tracer for an indoor office environment and demonstrate how the fusion of angle of departure and time of flight information in concert with a 3-D map of a typical large office environment provides a mean accuracy of 12.6 cm in line-of-sight and 16.3 cm in non-line-of-sight, over 100 receiver distances ranging from 1.5 m to 24.5 m using a single base station. We show how increasing the number of base stations improves the average non-line-of-sight position location accuracy to 5.5 cm at 21 locations with a maximum propagation distance of 24.5 m.

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Position Locationing for Millimeter Wave Systems

Cited by 74 publications

References 28 publications

Propagation Measurement System and Approach at 140 GHz-Moving to 6G and Above 100 GHz

Propagation Measurement System and Approach at 140 GHz-Moving to 6G and Above 100 GHz

Indoor Wireless Channel Properties at Millimeter Wave and Sub-Terahertz Frequencies

Map-Assisted Millimeter Wave Localization for Accurate Position Location

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