Physical characteristics of urban micro-cellular propagation

Dersch, U.; Zollinger, E.

doi:10.1109/8.362784

Cited by 30 publications

(12 citation statements)

References 9 publications

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“…Calculation of the impulse response (1) correlation function [24] presumes that the WSSUS assumption of the radio channel is valid. Then the average normalized spatial correlation ( square root of the envelope correlation [25]) on a stretch from to as a function of distance can be calculated by the following equation [26] ( 6) where energy received at each point from (4). Fig.…”

Section: B Spatial Correlation Functionsmentioning

confidence: 99%

Empirical characterization of wideband indoor radio channel at 5.3 GHz

Kivinen

Zhao

Vainikainen

2001

IEEE Trans. Antennas Propagat.

113

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Characteristics of wideband indoor radio channel at 5.3 GHz were defined based on an extensive measurement campaign using a wideband channel sounder with 19 ns delay resolution. Pathloss exponents were 1.3-1.5 in LOS and 2.9-4.8 in non line of sight (NLOS). Large difference in NLOS exponents was due to different dominating propagation mechanisms in different types of building structures. The delay dispersion was characterized by cumulative distribution functions (cdf) of the rms delay spreads, the values for cdf = 0 9 varied from 20 to 180 ns in different setups in office building and large hall environments. The correlation functions of the radio channel in spatial and frequency domains were extracted. Small scale models for five typical indoor scenarios were developed using tapped delay lines.

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Section: B Spatial Correlation Functionsmentioning

confidence: 99%

Empirical characterization of wideband indoor radio channel at 5.3 GHz

Kivinen

Zhao

Vainikainen

2001

IEEE Trans. Antennas Propagat.

113

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“…Thus, terms and are, respectively, the mean received power of the VP isotropic antennas and that of the HP isotropic antennas, and the XPR equals . By using (3) and the notation , the theoretical expression for MEG can be reduced to the following: (13) The MEG of actual mobile antennas with respect to a reference antenna is given by the following:…”

Section: A Three-dimensional Expression Of Megmentioning

confidence: 99%

Mean Effective Gain of Mobile Antennas in Line-of-Sight Street Microcells With Low Base Station Antennas

Ando

Taga

Kondô

et al. 2008

IEEE Trans. Antennas Propagat.

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A method for evaluating the mean effective gain (MEG) of mobile antennas in line-of-sight (LOS) street microcells with low base station antennas is investigated. The received power patterns of incident radio waves along typical streets measured in actual street microcells in urban areas of Tokyo are presented to clarify the proper distribution model for the incident radio waves. A two-dimensional statistical distribution model is proposed based on the measured received power patterns for the incident radio waves that follow a Gaussian distribution in the azimuth angle, but are concentrated in the horizontal plane in the elevation angle. The two-dimensional theoretical expression of the MEG that consists of the incident distribution model function and the radiation patterns in the horizontal plane of the mobile antennas is derived to evaluate easily the MEG. We show that the MEG values in street microcells are not defined as only one value and form the MEG pattern because the MEG values are changed by the relative direction of the radio waves arriving at the mobile station antennas. The measured and calculated MEG values (MEG patterns) of the whip antennas used in the experiments are in good agreement. The average error between the measured and calculated MEG values is within approximately 4.5 dB at maximum. The results show that the MEG degradation of the mobile station antennas due to the effect of the human body is properly evaluated by the proposed distribution model. The proposed statistical distribution model is valid and effective in both estimating the MEG values of mobile antennas and designing the LOS street microcell systems with low base station antennas.Index Terms-Line-of-sight (LOS) street microcells, low base station antennas, mean effective gain (MEG), mobile antennas, statistical distribution model of incoming radio waves.

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“…The two sets of field components make th, angle CP'5, derived from (9) Predictions of Ln can be made for independent input parameters ht, hr, hb, dt, cPo, Y2, X3, y4, 15 a and P5. In The correlation properties of a periodically repeated pseudo-noise (PN) sequence [10][11][12] used in the wideband propagation measurement system (WPMS) of [4] have been well applied to wide-band propagation measurements [13]. However, the method [4], simulating the wide-band radiowave propagation, has been less referenced.…”

Section: Narrow-band Channel Transfer Functionmentioning

confidence: 99%

A physical wide-band propagation model for outdoor mobile radio communications

Zhang¹

1996

1996 26th European Microwave Conference

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This new work makes a physical wide-band propagation model for outdoor mobile radio communications. First, the narrow-band channel transfer function resulting in the narrow-band path loss is derived. It contains the diffraction as well as single and double reflections by local buildings in the vicinity of the mobile, the reflection by remote large buildings and that by distant mountain surfaces. Second, new refinements including a number of explicit form expressions to an existing method, experimentally confirmed, simulating wide-band radiowave propagation for rural environment are added, making it applicable here. This method using the narrow-band channel transfer function as an important element generates time domain path loss, wide-band path loss and relative power in frequency domain. In particular, the time domain path loss physically interprets and reasonably predicts the power delay profile. The presence of such and similar power delay profiles, as well as the frequency range span behaviour of relative power in frequency domain, has been confirmed by the exising wide-band propagation measurements. The wide-band path loss is in the order of the narrow-band path loss at the carrier frequency.

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Physical characteristics of urban micro-cellular propagation

Cited by 30 publications

References 9 publications

Empirical characterization of wideband indoor radio channel at 5.3 GHz

Empirical characterization of wideband indoor radio channel at 5.3 GHz

Mean Effective Gain of Mobile Antennas in Line-of-Sight Street Microcells With Low Base Station Antennas

A physical wide-band propagation model for outdoor mobile radio communications

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