Performance Analysis of Reflection Paths for Millimeter Wavelength Systems

Muhi-Eldeen, Z.; Al-Nuaimi, M.O.; Richter, J.; Ivrissimtzis, L.P.

doi:10.1109/aiccsa.2007.370875

Cited by 3 publications

(6 citation statements)

References 7 publications

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“…1 (4) in which is the Fresnel dyadic reflection coefficient, a function of the unit vector at each point on the surface and the direction of incidence , as well as the complex dielectric constant of the surface. Expressions for the scalar Fresnel reflection coefficients for the field components that are parallel and perpendicular to the plane of incidence can be found in the literature [6].…”

Section: B Scattering Field Formulationmentioning

confidence: 99%

“…Expressions for the scalar Fresnel reflection coefficients for the field components that are parallel and perpendicular to the plane of incidence can be found in the literature [6]. The reflection coefficient for critical surfaces can be corrected by a surfaces roughness factor [4], [7], once the standard deviation of the elevation of the surface irregularities relative to its mean plane are obtained from high resolution data. In (3), signifies the unit vector in the direction of specular reflection of the surface mean plane due to incidence from the direction .…”

Section: B Scattering Field Formulationmentioning

confidence: 99%

“…The K-factor can be mapped to the outage probability for given data rates, modulation schemes, and transmitted power [4]. On the other hand, cross-polarized received power is characterized by the XPD of the link.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Modeling of High-Frequency Links With High-Resolution Terrain Data

Al-Daher

Ivrissimtzis

Hammoudeh

2012

Antennas Wirel. Propag. Lett.

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A quasi-deterministic model for the analysis of the electromagnetic propagation and estimation of main link parameters in fixed microwave and millimeter-wave links operating within urban or suburban environments is presented. The propagation geometry is modeled by a triangular mesh from the transformation of high-resolution LIDAR data. Subsequently, an efficient physical optics approximation is employed for the estimation of the mean scattered field power from surfaces within the main beams of the antennas. Random realizations of principal reflected and scattered fields constituents superimposed to the direct field allow for the prediction of worst-case link performance, in terms of outage probability, power delay spread, and cross-polar discrimination, for different design parameters: antenna position, gain, and height. The computations are compared to measurements of fixed links at 40 GHz.Index Terms-Directive antennas, electromagnetic (EM) modeling, microwave and millimeter-wave propagation, physical optics.

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Section: B Scattering Field Formulationmentioning

confidence: 99%

Section: B Scattering Field Formulationmentioning

confidence: 99%

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Electromagnetic Modeling of High-Frequency Links With High-Resolution Terrain Data

Al-Daher

Ivrissimtzis

Hammoudeh

2012

Antennas Wirel. Propag. Lett.

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“…The reflection coefficient for critical surfaces can be multiplicatively corrected by a surface roughness factor [4], [8], once the standard deviation of the elevation of the surface irregularities relative to its mean plane are obtained from high resolution data. In (3), r ŝ signifies the unit vector in the direction of specular reflection of the surface mean plane due to incidence from the direction ' s .…”

Section: B Scattering Fieldsmentioning

confidence: 99%

“…The Kfactor can be mapped to the outage probability for a given modulation scheme, data rate, and transmitted power [4]. On the other hand, cross-polarized received power is fully characterized by the XPD of the link.…”

Section: Introductionmentioning

confidence: 99%

Physical Optics modeling of fixed microwave links with digital terrain data

Al-Daher

Ivrissimtzis²,

Hammoudeh

2012

2012 Loughborough Antennas &Amp; Propagation Conference (LAPC)

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A Physical Optics approach to the analysis of the electromagnetic propagation and the estimation of main link parameters in LOS, point-to-point microwave links operating within urban environments is proposed and discussed. The propagation geometry is modeled by a triangular mesh obtained from the transformation of digital terrain (LIDAR) data. An asymptotic Physical Optics approximation is subsequently employed in the calculation of the scattered field power from surfaces within the main beamwidth of the two antennas. Random realizations of reflected and scattered field constituents are superimposed to the direct field and predict with reasonable accuracy link performance for main design variables, such as antenna position, gain and height. Direct and scattered field calculations are compared with measurements of fixed links of variable distance at 40GHz.Index Terms-electromagnetic modeling, microwave & millimeter wave propagation, microwave communications, physical optics, directive antennas.

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Analysis and comparison of 24 GHz cmWave radio propagation in urban and suburban scenarios

Rodríguez

Almeida

Abreu

et al. 2016

2016 IEEE Wireless Communications and Networking Conference

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This paper presents a measurement-based comparison of cm-wave propagation in urban and suburban scenarios at 24 GHz with transmitter antennas located above rooftop level. Different sets of directional measurements, exploring the full azimuth and the range from -30 to +30 degrees in elevation, were performed with horn antennas located close to street level, in order to explore the spatial characteristics of the channel in both LOS and NLOS conditions. The statistical analysis of different directional indicators shows how, at 24 GHz, outdoor propagation is quite different in the suburban scenario as compared to the urban case. Increased spatial multipath, in average 1.23 times higher, is observed in the suburban scenario, mainly due to the strong presence of vegetation. This results in reduced suburban NLOS path loss exponents (3.4) in comparison to the urban scenario (3.7), as detailed in the outdoor path loss analysis. The paper also highlights the potential of using beam combining techniques in order to improve cell-edge coverage by 17% and 37% in the urban and suburban scenarios, respectively. Outdoor-to-indoor propagation was also investigated, finding an average penetration loss of 6.5 dB for buildings composed of light construction materials. The different results and observations provided in the paper are useful for modeling and simulation of future wireless networks operating at 24 GHz in urban and suburban scenarios.

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Performance Analysis of Reflection Paths for Millimeter Wavelength Systems

Cited by 3 publications

References 7 publications

Electromagnetic Modeling of High-Frequency Links With High-Resolution Terrain Data

Electromagnetic Modeling of High-Frequency Links With High-Resolution Terrain Data

Physical Optics modeling of fixed microwave links with digital terrain data

Analysis and comparison of 24 GHz cmWave radio propagation in urban and suburban scenarios

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