Estimating the omni-directional pathloss from directional channel sounding

Haneda, Katsuyuki; Nguyen, Sinh Le Hong; Järveläinen, Jan; Putkonen, Jyri

doi:10.1109/eucap.2016.7481455

Cited by 38 publications

(31 citation statements)

References 9 publications

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“…Combined with a limited number of measurement sites, these assumptions may have limited the applicability of the analysis results. However, these same assumptions were widely accepted when measurement data were provided from rotating horn antenna measurements , , , .…”

Section: Measurement Overviewmentioning

confidence: 98%

“…By utilizing the measurement data, we developed an algorithm that synthesized an arbitrary beamwidth propagation loss and determined that the additional loss in the Daejeon measurements was due to the horn‐antenna beamwidth. The synthesis algorithm is a modification of the omnidirectional synthesis algorithms in with an incorporated beamwidth effect.…”

Section: Effects Of Directional‐antenna Beamwidth On Received Powermentioning

confidence: 99%

“…In the development of standardized omnidirectional‐antenna channel models, there have been several algorithm proposals for synthesizing omnidirectional characteristics from rotational scanning horn‐antenna measurement data . Although some differences exist, such as the level of information that is merged to yield synthesized characteristics, all proposed algorithms are limited because they are applicable only for omnidirectional characteristics, not for certain beamwidth characteristics.…”

Section: Effects Of Directional‐antenna Beamwidth On Received Powermentioning

confidence: 99%

See 2 more Smart Citations

Field-Measurement-Based Received Power Analysis for Directional Beamforming Millimeter-Wave Systems: Effects of Beamwidth and Beam Misalignment

Lee¹,

Kim²,

Park³

et al. 2018

ETRI Journal

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To overcome considerable path loss in millimeterwave propagation, high-gain directional beamforming is considered to be a key enabling technology for outdoor 5G mobile networks. Associated with beamforming, this paper investigates propagation power loss characteristics in two aspects. The first is beamwidth effects. Owing to the multipath receiving nature of mobile environments, it is expected that a narrower beamwidth antenna will capture fewer multipath signals, while increasing directivity gain. If we normalize the directivity gain, this narrowbeamwidth reception incurs an additional power loss compared to omnidirectional-antenna power reception. With measurement data collected in an urban area at 28 GHz and 38 GHz, we illustrate the amount of these additional propagation losses as a function of the halfpower beamwidth. Secondly, we investigate power losses due to steering beam misalignment, as well as the measurement data. The results show that a small angle misalignment can cause a large power loss. Considering that most standard documents provide omnidirectional antenna path loss characteristics, these results are expected to contribute to mmWave mobile system designs.

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Section: Measurement Overviewmentioning

confidence: 98%

Section: Effects Of Directional‐antenna Beamwidth On Received Powermentioning

confidence: 99%

Section: Effects Of Directional‐antenna Beamwidth On Received Powermentioning

confidence: 99%

See 1 more Smart Citation

Field-Measurement-Based Received Power Analysis for Directional Beamforming Millimeter-Wave Systems: Effects of Beamwidth and Beam Misalignment

Lee¹,

Kim²,

Park³

et al. 2018

ETRI Journal

View full text Add to dashboard Cite

show abstract

“…Another way to prevent the high loss of RF cables is to install an RF-over-fiber solution [48], [49] with only a few dBs of losses for 100 m cable length, and gain at the electric/optical and optical/electric converters. The VNA set up cannot be used for moving antenna platforms.…”

Section: Mm-wave Channel Soundingmentioning

confidence: 99%

Millimeter-Wave Propagation: Characterization and modeling toward fifth-generation systems. [Wireless Corner]

Salous

Degli-Esposti²,

Fuschini

et al. 2016

IEEE Antennas Propag. Mag.

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101

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Abstract-The World Radiocommunications Conference WRC15 identified a number of frequency bands between 24-86 GHz as candidate frequencies for future cellular networks. In this paper an extensive review of propagation characteristics and challenges related to the use of millimetre wave in future wireless systems is presented. Reference to existing path loss models including atmospheric and material attenuation in recommendations of the International Telecommunication Union is given and the need for new multidimensional models and measurements is identified. A description of state of the art mm wave channel sounders for single and multiple antenna measurements is followed by a discussion of the most recent deterministic, semi-deterministic and stochastic propagation and channel models. Finally, standardization issues are outlined with recommendations for future research.

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“…To express power at a given point for use in omnidirectional path-loss models, this directivity of the used antenna is unwanted. Due to this, synthesizing techniques have been applied to create virtual omnidirectional antennas [5]- [9]. The approach of synthesizing with directional elements is not new, as shown by [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Validation of emulated omnidirectional antenna output using directive antenna data

Hejselbak

Karstensen

Nielsen

et al. 2017

2017 11th European Conference on Antennas and Propagation (EUCAP)

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Abstract-In this paper, we present validation of a method for constructing a virtual omnidirectional antenna in the azimuth plane. The virtual omnidirectional antenna utilizes a combination of data from directive horn antennas. The aim is to utilize the high gain of the horn antenna to improve the dynamic range of channel sounding measurements conducted in the centimeter and millimeter wave bands. The resulting complex impulse response from the virtual omnidirectional antenna is used to find the powerdelay-profile (PDP). This is then compared to measurements conducted at the same time using a real omnidirectional antenna. The validation shows that the synthesized omnidirectional is capable of predicting main components and the slope of the PDP. Further, it is shown that by choosing angular sampling steps corresponding to the half power beam width (HPBW) of the used antenna similar power levels can be achieved.

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Estimating the omni-directional pathloss from directional channel sounding

Cited by 38 publications

References 9 publications

Field-Measurement-Based Received Power Analysis for Directional Beamforming Millimeter-Wave Systems: Effects of Beamwidth and Beam Misalignment

Field-Measurement-Based Received Power Analysis for Directional Beamforming Millimeter-Wave Systems: Effects of Beamwidth and Beam Misalignment

Millimeter-Wave Propagation: Characterization and modeling toward fifth-generation systems. [Wireless Corner]

Validation of emulated omnidirectional antenna output using directive antenna data

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