A Time-Domain Based Approach for Short-Term Fading Depth Evaluation in Wideband Mobile Communication Systems

Cardoso, Filipe D.; Correia, Luıs M.

doi:10.1007/s11277-005-7681-x

Cited by 2 publications

(2 citation statements)

References 7 publications

(9 reference statements)

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“…The received power can suffer severe fading, and additional amount of power, known as fade margin, should be provided in order to enhance the system quality. These aspects are beyond the scope of this paper but the interested reader can refer to [22] and [23] for further details.…”

Section: Time-dispersive Channel Modelsmentioning

confidence: 99%

Preliminary Results on 3D Channel Modeling: From Theory to Standardization

Kammoun

Khanfir

Altman

et al. 2014

IEEE J. Select. Areas Commun.

117

112

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Three dimensional beamforming (3D) (also elevation beamforming) is now gaining a growing interest among researchers in wireless communication. The reason can be attributed to its potential to enable a variety of strategies like sector or user specific elevation beamforming and cell-splitting. Since these techniques cannot be directly supported by current LTE releases, the 3GPP is now working on defining the required technical specifications. In particular, a large effort is currently made to get accurate 3D channel models that support the elevation dimension. This step is necessary as it will evaluate the potential of 3D and FD(Full Dimensional) beamforming techniques to benefit from the richness of real channels. This work aims at presenting the on-going 3GPP study item "Study on 3D-channel model for Elevation Beamforming and FD-MIMO studies for LTE", and positioning it with respect to previous standardization works.

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Section: Time-dispersive Channel Modelsmentioning

confidence: 99%

Preliminary Results on 3D Channel Modeling: From Theory to Standardization

Kammoun

Khanfir

Altman

et al. 2014

IEEE J. Select. Areas Commun.

117

112

View full text Add to dashboard Cite

show abstract

“…The problem of the propagation channel dependence on system bandwidth, hence, of the fading margins that need to be considered, was already addressed in the past [8], [9], [10], [11], [12]. Still, as far as the authors are aware of, no such studies exist for BANs in indoor circular metallic environments.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth Dependence of the Propagation Channel in Circular Metallic BAN Environments

Ferreira¹,

Cardoso²,

Ambroziak

et al. 2023

IEEE Access

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In this paper, the bandwidth dependence of the propagation channel for Body Area Networks (BANs) in circular metallic environments is addressed and models are proposed to evaluate the appropriate short-term fading margins that should be considered as a function of the system bandwidth. The deployment of BANs in metallic indoor environments, such as ships, factories, warehouses and other similar environments, involves additional challenges compared to other indoor environments due to the specific propagation effects in this type of environments (i.e., with strong reflections). No studies of this kind and for this type of environment can be found in literature, giving the motivation for this work. Bandwidth dependent values of delay spread are also presented and discussed. It is observed that for a system bandwidth up to 100 MHz the fading depth is composed of three main stages, with the transitions between these stages being associated with the system ability to discriminate arriving rays at the receiver. Average values of fading depth are 16.4, 13.2 and 11.0 dB for stages 1, 2 and 3, respectively, the difference between consecutive stages ranging between 2.2 to 3.2 dB. For a system bandwidth larger than 100 MHz, the fading depth decreases with an increasing system bandwidth, with an average decay rate close to 3 dB per 100 MHz bandwidth, being about 2 dB for system bandwidths above 400 MHz.INDEX TERMS Body area networks, metallic structures, propagation channel, fading-depth, short-term fading margin, bandwidth dependence.

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A Time-Domain Based Approach for Short-Term Fading Depth Evaluation in Wideband Mobile Communication Systems

Cited by 2 publications

References 7 publications

Preliminary Results on 3D Channel Modeling: From Theory to Standardization

Preliminary Results on 3D Channel Modeling: From Theory to Standardization

Bandwidth Dependence of the Propagation Channel in Circular Metallic BAN Environments

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