Propagation measurements at 28 GHz for coverage evaluation of local multipoint distribution service

Elrefaie, Aly F.; Shakouri, M.S.

doi:10.1109/wcc.1997.622239

Cited by 22 publications

(11 citation statements)

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“…Recently, most research has focused on the 28 GHz band, the 38 GHz band, and the E-band (71-76 GHz and 81-86 GHz) [6]. In the past two decades, measurement campaigns were conducted in 28 GHz and 38 GHz mmWave bands for Local Multipoint Distribution Service (LMDS) [7,8]. In addition, wideband NLOS measurements were performed by Violette et al at the 9.6, 28.8, and 57.…”

Section: Introductionmentioning

confidence: 99%

Indoor Corridor Wideband Radio Propagation Measurements and Channel Models for 5G Millimeter Wave Wireless Communications at 19 GHz, 28 GHz, and 38 GHz Bands

Al-Samman

Rahman

Azmi

2018

Wireless Communications and Mobile Computing

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This paper presents millimeter wave (mmWave) measurements in an indoor environment. The high demands for the future applications in the 5G system require more capacity. In the microwave band below 6 GHz, most of the available bands are occupied; hence, the microwave band above 6 GHz and mmWave band can be used for the 5G system to cover the bandwidth required for all 5G applications. In this paper, the propagation characteristics at three different bands above 6 GHz (19, 28, and 38 GHz) are investigated in an indoor corridor environment for line of sight (LOS) and non-LOS (NLOS) scenarios. Five different path loss models are studied for this environment, namely, close-in (CI) free space path loss, floating-intercept (FI), frequency attenuation (FA) path loss, alpha-beta-gamma (ABG), and close-in free space reference distance with frequency weighting (CIF) models. Important statistical properties, such as power delay profile (PDP), root mean square (RMS) delay spread, and azimuth angle spread, are obtained and compared for different bands. The results for the path loss model found that the path loss exponent (PLE) and line slope values for all models are less than the free space path loss exponent of 2. The RMS delay spread for all bands is low for the LOS scenario, and only the directed path is contributed in some spatial locations. For the NLOS scenario, the angle of arrival (AOA) is extensively investigated, and the results indicated that the channel propagation for 5G using high directional antenna should be used in the beamforming technique to receive the signal and collect all multipath components from different angles in a particular mobile location.

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Section: Introductionmentioning

confidence: 99%

Indoor Corridor Wideband Radio Propagation Measurements and Channel Models for 5G Millimeter Wave Wireless Communications at 19 GHz, 28 GHz, and 38 GHz Bands

Al-Samman

Rahman

Azmi

2018

Wireless Communications and Mobile Computing

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“…Moreover, several mmWave channel measurement campaigns for the 28 GHz band have been conducted and path loss (PL), root mean square (RMS) delay spread, and multipath effects have been studied. For instance, measurements presented in the work of Elrefaie and Shakouri have showed that higher transmitter (TX) antenna can increase the coverage compared to the TX with lower antenna heights because of fewer obstructions. Multipath delay spreads, number of multipath components, and large‐scale PL have been studied by New York University wireless research center at 28 GHz, 38 GHz, and 73 GHz for both access and backhaul scenario, and the first 3D measurement‐based mmWave wideband statistical channel impulse model for 28 GHz propagation is presented …”

Section: Introductionmentioning

confidence: 99%

Indoor wideband directional millimeter wave channel measurements and analysis at 26 GHz, 32 GHz, and 39 GHz

Khalily

Taheri

Payami

et al. 2018

Trans Emerging Tel Tech

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This paper presents details of the wideband directional propagation measurements of millimeter‐wave (mmWave) channels in the 26 GHz, 32 GHz, and 39 GHz frequency bands in an indoor typical office environment. More than 14 400 power delay profiles (PDPs) were measured across the 26 GHz band and over 9000 power delay profiles have been recorded for the 32 GHz and 39 GHz bands at each measurement point. A mmWave wideband channel sounder has been used, where signal analyzer and vector signal generator were employed. Measurements have been conducted for both co and cross‐antenna polarization. The setup provided 2 GHz bandwidth and the mechanically steerable directional horn antenna with 8 degrees beamwidth provides 8 degrees of directional resolution over the azimuth for 32 GHz and 39 GHz, whereas 26 GHz measurement setup provides the angular resolution of 5 degrees. Measurements provide path loss, delay, and spatial spread of the channel. Large‐scale fading characteristics, RMS delay spread, RMS angular spread, and angular and delay dispersion are presented for 3 mmWave bands for the line‐of‐sight scenario.

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“…For 28 GHz LMDS systems, early research showed the need for highly directional antennas to reduce channel dispersion and to improve link budget at the receivers [7]. An evaluation of 28 GHz LMDS showed the coverage ranged from 60% using a 40 foot tall antenna, to 80% using an 80 foot tall antenna for a cell radius of two kilometers [8]. These studies suggest that future wireless communication networks may deploy highly directional antennas for much smaller cell sizes as compared to current systems.…”

Section: Introductionmentioning

confidence: 99%

28 GHz and 73 GHz signal outage study for millimeter wave cellular and backhaul communications

Nie¹,

MacCartney²,

Sun³

et al. 2014

2014 IEEE International Conference on Communications (ICC)

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This paper presents millimeter wave propagation measurements in New York City and an analysis of signal outage at 28 and 73 GHz using similar spread spectrum sliding correlator channel sounders that employed high gain, directional steerable antennas (24.5 dBi gain antennas at 28 GHz and 27 dBi gain antennas at 73 GHz) at both the transmitter and receiver. Three identical transmitter locations were used for both the 28 and 73 GHz campaigns, while the 73 GHz campaign included two new TX locations. The 28 GHz campaign tested 25 receiver locations for each of the three transmitter locations, and the 73 GHz campaign tested 27 receiver locations in various combinations with the five transmitter sites. Overall, 75 TX-RX location combinations were tested at 28 GHz and 74 TX-RX combinations were tested at 73 GHz, with T-R (transmitterreceiver) separation distances up to 425 m. The maximum transmit power was 30 dBm at 28 GHz and 14.6 dBm at 73 GHz. Our analysis shows that the estimated outage probabilities at 28 and 73 GHz for the cellular communication scenario are 14% and 17%, respectively, and is 16% for the 73 GHz backhaul scenario.

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Propagation measurements at 28 GHz for coverage evaluation of local multipoint distribution service

Cited by 22 publications

References 0 publications

Indoor Corridor Wideband Radio Propagation Measurements and Channel Models for 5G Millimeter Wave Wireless Communications at 19 GHz, 28 GHz, and 38 GHz Bands

Indoor Corridor Wideband Radio Propagation Measurements and Channel Models for 5G Millimeter Wave Wireless Communications at 19 GHz, 28 GHz, and 38 GHz Bands

Indoor wideband directional millimeter wave channel measurements and analysis at 26 GHz, 32 GHz, and 39 GHz

28 GHz and 73 GHz signal outage study for millimeter wave cellular and backhaul communications

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