Wireless RF Energy Propagation in Multiply-Connected Reverberant Spaces

Giuseppe, J. S.; Hager, Carl E.; Tait, Gregory B.

doi:10.1109/lawp.2011.2175195

Cited by 12 publications

(3 citation statements)

References 8 publications

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“…Applications of the PWB method to nested reverberation chambers (RC) to emulate fading in multiply connected wireless channels have been considered in the literature. Both two-and threecavity RC environments have been studied in the time [14] and frequency [15][16][17][18] domains. More recently, hybrid deterministic-statistical models have been developed to study complex single cavity environments [19] in an electromagnetic compatibility (EMC) context and to accelerate ray tracing in wireless coverage planning tools [20].…”

Section: Introductionmentioning

confidence: 99%

Wireless power distributions in multi-cavity systems at high frequencies

et al. 2021

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The next generations of wireless networks will work in frequency bands ranging from sub-6 GHz up to 100 GHz. Radio signal propagation differs here in several critical aspects from the behaviour in the microwave frequencies currently used. With wavelengths in the millimetre range (mmWave), both penetration loss and free-space path loss increase, while specular reflection will dominate over diffraction as an important propagation channel. Thus, current channel model protocols used for the generation of mobile networks and based on statistical parameter distributions obtained from measurements become insufficient due to the lack of deterministic information about the surroundings of the base station and the receiver-devices. These challenges call for new modelling tools for channel modelling which work in the short-wavelength/high-frequency limit and incorporate site-specific details—both indoors and outdoors. Typical high-frequency tools used in this context—besides purely statistical approaches—are based on ray-tracing techniques. Ray-tracing can become challenging when multiple reflections dominate. In this context, mesh-based energy flow methods have become popular in recent years. In this study, we compare the two approaches both in terms of accuracy and efficiency and benchmark them against traditional power balance methods.

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Section: Introductionmentioning

confidence: 99%

Wireless power distributions in multi-cavity systems at high frequencies

et al. 2021

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“…Applications of the PWB method to nested reverberation chambers (RC) to emulate fading in multiplyconnected wireless channels have been considered in the literature. Both two-and three-cavity RC environments have been studied in the time [13] and frequency [14][15][16] domain. More recently, hybrid deterministic-statistical models have been developed to study complex single cav-ity environments [17] in an electromagnetic compatibility (EMC) context and to accelerate ray tracing in wireless coverage planning tools [18].…”

Section: Introductionmentioning

confidence: 99%

Wireless Power Distributions in Multi-Cavity Systems at High Frequencies

Adnan,

Blakaj,

Phang

et al. 2020

Preprint

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The next generations of wireless networks will work in frequency bands ranging from sub-6 GHz up to 100 GHz. Radio signal propagation differs here in several critical aspects from the behaviour in the microwave frequencies currently used. With wavelengths in the millimeter range (mmWave), both penetration loss and free-space path loss increase, while specular reflection will dominate over diffraction as an important propagation channel. Thus, current channel model protocols used for the generation of mobile networks and based on statistical parameter distributions obtained from measurements become insufficient due to the lack of deterministic information about the surroundings of the base station and the receiver-devices. These challenges call for new modelling tools for channel modelling which work in the short wavelength/high-frequency limit and incorporate site-specific details -both indoors and outdoors.Typical high-frequency tools used in this context -besides purely statistical approaches -are based on ray-tracing techniques. Ray-tracing can become challenging when multiple reflections dominate. In this context, mesh-based energy flow methods have become popular in recent years. In this study, we compare the two approaches both in terms of accuracy and efficiency and benchmark them against traditional power balance methods.

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“…A reverberation chamber (RC) is used to reproduce different indoor environments [12], [13] where the amount of multipath [14], [15] and radio coverage can be well controlled systematically without any unwanted effects of external interfering signals. Single [16] or coupled RCs [17]- [19] were successfully used to emulate a Rician environment and to check antenna behavior in this kind of propagation [20]- [24]. An RC can be loaded with electromagnetic absorbing materials [25] in order to modulate its multipath behavior [26]- [28] by tuning it from typical indoor environment up to an extreme reflecting place.…”

mentioning

confidence: 99%

Testing of the Carrier Aggregation Mode for a Live LTE Base Station in Reverberation Chamber

Micheli

Barazzetta

Carlini

et al. 2017

IEEE Trans. Veh. Technol.

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For the first time, the carrier aggregation feature of a live 4G-LTE base station (BS) is checked adopting a reverberation chamber as a propagating environment. To that purpose, two non adjacent bands were chosen: 800 and 1800 MHz and alternatively set as primary and secondary cells. The multipath conditions were tuned by adding the absorbing material inside the chamber and ranging from an empty condition with a rich multipath to a real environment like an indoor scenario. The latter is a very interesting and popular situation as it represents one in which people use mobile phones. The multipath variation effect on the BS performance was accurately verified by introducing power compensation in order to account for the variation of the chamber quality factor Q due to the insertion of absorbers. A complete over-the-air test was carried out by checking typical transmission quality parameters, that are of interest to manufacturers and mobile network operators. Results highlight differences between the performance of the two bands as a function of multipath degree and signal strength

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Wireless RF Energy Propagation in Multiply-Connected Reverberant Spaces

Cited by 12 publications

References 8 publications

Wireless power distributions in multi-cavity systems at high frequencies

Wireless power distributions in multi-cavity systems at high frequencies

Wireless Power Distributions in Multi-Cavity Systems at High Frequencies

Testing of the Carrier Aggregation Mode for a Live LTE Base Station in Reverberation Chamber

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