Propagation characterization of an office building in the 60 GHz band

Lu, Jonathan S.; Steinbach, Daniel; Cabrol, Patrick; Pietraski, Phil; Pragada, Ravikumar

doi:10.1109/eucap.2014.6901885

Cited by 48 publications

(29 citation statements)

References 9 publications

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“…As far as the brick wall is concerned, values of ε R and σ in Table 3 are not in full agreement with the existing experimental studies, where ε R values at millimeter frequencies between 2.55 [25] and 4.4 [27] have been found, and σ up to 1.4 S/m has been proposed [25]. A general, rather clear conclusion can be however drawn from the overall different investigations: if compared to the values commonly adopted at UHF frequencies (ε R ≈ 5, σ ≈ 10 -2 around 1 GHz [22,28]), the permittivity value at mm-wave is basically the same, whereas the conductivity is increased by one/two order of magnitude, that is also in agreement with the already discussed increase of the obstruction loss experienced at mm-waves.…”

Section: Rt Parameters Tuningcontrasting

confidence: 65%

“…Such approach has been also extended to the electromagnetic parameters of the OUT (relative permittivity-ε R -and electrical conductivity-σ), in order to estimate their values for the OUT never addressed so far (e.g., the monitor or the bookshelf ) or to consolidate their evaluation for the most common objects (like the wall sample and the wooden panel), still not reliably and extensively investigated at mm-waves in the few studies available in the literature ( [25][26][27] for a brick wall).…”

Section: Rt Parameters Tuningmentioning

confidence: 99%

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Item level characterization of mm-wave indoor propagation

Fuschini

Häfner

Zoli

et al. 2016

J Wireless Com Network

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According to the current prospect of allocating next generation wireless systems in the underutilized millimeter frequency bands, a thorough characterization of mm-wave propagation represents a pressing necessity. In this work, an "item level" characterization of radiowave propagation at 70 GHz is carried out. The scattering properties of several, different objects commonly present in indoor environment are investigated by means of measurements carried out in an anechoic chamber. The measured data have been also exploited to tune some parameters of a 3D ray tracing model.

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Section: Rt Parameters Tuningcontrasting

confidence: 65%

Section: Rt Parameters Tuningmentioning

confidence: 99%

Item level characterization of mm-wave indoor propagation

Fuschini

Häfner

Zoli

et al. 2016

J Wireless Com Network

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“…Typical relative permittivity and conductivity for different building materials are reported by [23] and [24] while a comparative study between 5.8 GHz and 62.4 GHz is given by [25]. ITU-R recommendation 2040-1 [26] provides an expression for the conductivity σ -which gives rise to the dB/m specific attenuation factor -as a function of frequency f in GHz Reported penetration losses at 60 GHz are on the order of some dBs for very thin plastic, wood or plaster partitions, 4 dB for a 0.7 cm single-panel tempered glass and 25 dB for a 9 cm indoor brick wall when both the transmit and receive antennas are vertically polarised [28] [29].…”

Section: Propagation Characteristicsmentioning

confidence: 99%

“…For outdoor urban databases, a good accuracy can be attained through aerial stereo photogrammetry instead of using satellite images, but even in this case the error still has a lower bound of about 0.5 m. The representation of the scenario must include both its geometrical and electromagnetic properties. For reference, the electrical permittivity and the conductivity values measured on some common building materials at millimetre frequencies are listed in Table 2 [24], [25], [58]- [60]. RT models represent an appropriate choice when it comes to deterministic, mm-wave propagation and channel modelling.…”

Section: A Deterministic and Semi-deterministic Modelsmentioning

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.

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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“…(1) and (3). We also inserted the penetration loss of the lens (10 dB) to the comparison considering the penetration loss of other materials measured at 60 GHz [59]. The penetration losses of the glass, Plexiglas, and brick wall were respectively measured to be 4.3, 8.6, and 14.7 dB in [59].…”

Section: Rx Snr Enhancement Methods Bmentioning

confidence: 99%

Orbital Angular Momentum (OAM) Multiplexing: An Enabler of a New Era of Wireless Communications

Lee

Sasaki

Fukumoto

et al. 2017

IEICE Trans. Commun.

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SUMMARY This paper explores the potential of orbital angular momentum (OAM) multiplexing as a means to enable high-speed wireless transmission. OAM is a physical property of electro-magnetic waves that are characterized by a helical phase front in the propagation direction. Since the characteristic can be used to create multiple orthogonal channels, wireless transmission using OAM can enhance the wireless transmission rate. Comparisons with other wireless transmission technologies clarify that OAM multiplexing is particularly promising for point-to-point wireless transmission. We also clarify three major issues in OAM multiplexing: beam divergence, mode-dependent performance degradation, and reception (Rx) signal-to-noise-ratio (SNR) reduction. To mitigate mode-dependent performance degradation we first present a simple but practical Rx antenna design method. Exploiting the fact that there are specific location sets with phase differences of 90 or 180 degrees, the method allows each OAM mode to be received at its high SNR region. We also introduce two methods to address the Rx SNR reduction issue by exploiting the property of a Gaussian beam generated by multiple uniform circular arrays and by using a dielectric lens antenna. We confirm the feasibility of OAM multiplexing in a proof of concept experiment at 5.2 GHz. The effectiveness of the proposed Rx antenna design method is validated by computer simulations that use experimentally measured values. The two new Rx SNR enhancement methods are validated by computer simulations using wireless transmission at 60 GHz.

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Propagation characterization of an office building in the 60 GHz band

Cited by 48 publications

References 9 publications

Item level characterization of mm-wave indoor propagation

Item level characterization of mm-wave indoor propagation

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

Orbital Angular Momentum (OAM) Multiplexing: An Enabler of a New Era of Wireless Communications

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