A wide-band propagation model based on UTD for cellular mobile radio communications

Zhang, Wei

doi:10.1109/8.650079

Cited by 65 publications

(27 citation statements)

References 23 publications

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“…Figure 3 depicts the visualization of the propagation geometry in a small cell with the presence of buildings. These kind of losses are caused by the wave di!raction in the buildings on the vicinity of the mobile subscriber and are derived from the next formula [8]:…”

Section: Obstructed Line Of Sight (Olos)mentioning

confidence: 99%

On optimal cell planning: Case study for a DCS 1800 system

Bouzouki

Kotsopoulos

Karagiannidis

et al. 2001

Int J Communication

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SUMMARYMicro and pico cell planning strategies are adopted in personal communication systems (PCS) in order to increase their capacity. The usage of the upper UHF band in combination with greater bandwidth is already proposed by telecom engineers in order to achieve the promised service quality and data rates. These strategies are characterized by an increased number of cells in speci"c geographical areas with the corresponding operating base transceiving stations (BTS) located at relatively low heights above the street level. In this case, the cell planning procedure in linear streets under line-of-sight (LOS) conditions needs further study concerning the technical characteristics of the PCS.In this paper, the propagation characteristics of a DCS 1800 system are investigated on a theoretical and experimental basis in a speci"c geographical area (center of Patras City in Northern Pelloponesse). An improved RF propagation model is proposed in order to determine the propagation path losses occurring under certain multipath fading conditions. Hence an optimum determination of a system's cellular area can be achieved.

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Section: Obstructed Line Of Sight (Olos)mentioning

confidence: 99%

On optimal cell planning: Case study for a DCS 1800 system

Bouzouki

Kotsopoulos

Karagiannidis

et al. 2001

Int J Communication

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“…is the path loss of a multiple diffraction ray, that was expressed in [8], and E,, is the electric field of rays for vertical polarisation transmission and reception applying to most cases of mobile radio and this work. This work uses about M =8 dominant rays which appear adequate for model prediction in urban street grid environments as indicated by Fig 1, where the base station was in the centre of the main street.…”

Section: Two-dimensional Diffraction Modellingmentioning

confidence: 99%

Fast Two-Dimensional Diffraction Modelling for Mobile Radio Propagation Prediction in Urban Micro-Cellular Environments

Zhang¹,

Lähteenmäki

Vainikainen³

et al. 1998

1998 28th European Microwave Conference

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The paper presents fast two-dimensional (2-D) diffraction modelling in te horizontal plane for site-specific propagation prediction in urban micro-cellular environments. Comparison with measurements and simulation of published results validate the 2-D modelling that significantly reduces the computation time and overcomes the limitation and difficulty of existing techniques for multiple buildina diffraction. The modelling makes three contributions which are 1) extension of an expression for multiple building forward diffraction and use of the extended formulation, 2) equivalent source technique for parallel-street multiple diffraction and 3) inclusion of reflections from curved surfaces of street building comers. Additional comparisons of three-dimensional model prediction with measurements for an urban line-of-sight environment place the work in a more complete context The results show that an increase in the number of rays may not enhance the accuracy ofray-tracing model prediction.

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“…These papers mainly analyzed and examined the propagation path of radio waves when in the urban area there are many buildings. For the case when the waves exceed building roof, Zhang analyzed propagating radio wave over a large number of buildings [3].…”

Section: Introductionmentioning

confidence: 99%

A Method for Finding Diffraction Points on Two Edges with Arbitrary Angle and Its Diffracted Fields

Iwaida

Iwashige

Kameyama

et al. 2013

2013 Seventh International Conference on Complex, Intelligent, and Software Intensive Systems

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Estimation of the scattering of electromagnetic waves by buildings and other obstacles is very important for wireless communications in urban area. In our previous work, we have examined the diffracted fields by two horizontal edges with an arbitrary angle. In this paper, we consider the diffracted fields by two edges with an arbitrary angle which change in both horizontal and vertical directions. The numerical calculations are carried out for two wedges. The results show that when the angle between two edges increases, relatively strong orthogonal polarized wave components appear to the incident wave.

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A wide-band propagation model based on UTD for cellular mobile radio communications

Cited by 65 publications

References 23 publications

On optimal cell planning: Case study for a DCS 1800 system

On optimal cell planning: Case study for a DCS 1800 system

Fast Two-Dimensional Diffraction Modelling for Mobile Radio Propagation Prediction in Urban Micro-Cellular Environments

A Method for Finding Diffraction Points on Two Edges with Arbitrary Angle and Its Diffracted Fields

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