A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements

George R. Maccartney, Hangsong Yan, Shu Sun, Theodore Rappaport

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a millimeter-wave (mmWave) wideband sliding correlator channel sounder with flexibility to operate at various transmission rates. The channel sounder can transmit and receive up to 1 GHz of RF null-to-null bandwidth while measuring a 2 nanosecond multipath time resolution. The system architecture takes advantage of field-programmable gate arrays (FPGAs), high-speed digital-to-analog converters (DACs), and low phase noise Rubidium (Rb) references for synchronization. Using steerable narrowbeam antennas, the system can measure up to 185 dB of path loss. The channel sounder is used to measure the directional and omnidirectional received power as a receiver transitions from line-of-sight to non-line-of-sight conditions down an urban canyon. A 25 dB drop in omnidirectional received power was observed as the receiver transitioned from line-of-sight (LOS) conditions to deeply shadowed non-LOS (NLOS) conditions. The channel sounder was also used to study signal variation and spatial consistency for a local set of receiver locations arranged in a cluster spanning a 5 m × 10 m local area, where the omnidirectional received power in LOS and NLOS environments is found to be relatively stable with standard deviations of received power of 2.2 dB and 4.3 dB, respectively. This work shows that when implementing beamforming at the transmitter at mmWave, the omnidirectional received power over a local area has little fluctuation among receiver locations separated by a few to several meters.

Original languageEnglish (US)
Title of host publication2017 IEEE International Conference on Communications, ICC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467389990
DOIs
StatePublished - Jul 28 2017
Event2017 IEEE International Conference on Communications, ICC 2017 - Paris, France
Duration: May 21 2017May 25 2017

Other

Other2017 IEEE International Conference on Communications, ICC 2017
CountryFrance
CityParis
Period5/21/175/25/17

Fingerprint

Millimeter waves
Acoustic waves
Steerable antennas
Rubidium
Correlators
Digital to analog conversion
Phase noise
Beamforming
Field programmable gate arrays (FPGA)
Transmitters
Synchronization
Bandwidth

Keywords

  • 73 GHz
  • channel sounder
  • local area
  • Millimeter-wave
  • mmWave
  • route
  • sliding correlator
  • spatial consistency

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Maccartney, G. R., Yan, H., Sun, S., & Rappaport, T. (2017). A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements. In 2017 IEEE International Conference on Communications, ICC 2017 [7996791] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.2017.7996791

A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements. / Maccartney, George R.; Yan, Hangsong; Sun, Shu; Rappaport, Theodore.

2017 IEEE International Conference on Communications, ICC 2017. Institute of Electrical and Electronics Engineers Inc., 2017. 7996791.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Maccartney, GR, Yan, H, Sun, S & Rappaport, T 2017, A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements. in 2017 IEEE International Conference on Communications, ICC 2017., 7996791, Institute of Electrical and Electronics Engineers Inc., 2017 IEEE International Conference on Communications, ICC 2017, Paris, France, 5/21/17. https://doi.org/10.1109/ICC.2017.7996791
Maccartney GR, Yan H, Sun S, Rappaport T. A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements. In 2017 IEEE International Conference on Communications, ICC 2017. Institute of Electrical and Electronics Engineers Inc. 2017. 7996791 https://doi.org/10.1109/ICC.2017.7996791
Maccartney, George R. ; Yan, Hangsong ; Sun, Shu ; Rappaport, Theodore. / A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements. 2017 IEEE International Conference on Communications, ICC 2017. Institute of Electrical and Electronics Engineers Inc., 2017.
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