Multipath performance of handset adaptive array antennas in the vicinity of a human operator

Ogawa, Kōichi; Yamamoto, Akira; Takada, Jun‐ichi

doi:10.1109/tap.2005.852283

Cited by 29 publications

(13 citation statements)

References 14 publications

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“…In general, because of co-channel interference cell size radius cannot be reduced indefinitely to achieve higher information capacity [121]. Therefore, there is a limit to cell size reduction, which is in agreement with the suggestion by Zhou et al in [7].…”

Section: Introductionsupporting

confidence: 87%

Minimum Cell Size for Information Capacity Increase in Cellular Wireless Network

Anang

Rpajic

Eneh

et al. 2011

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)

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Section: Introductionsupporting

confidence: 87%

Minimum Cell Size for Information Capacity Increase in Cellular Wireless Network

Anang

Rpajic

Eneh

et al. 2011

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)

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“…Initially, we focus on the reflected wave components P r [22], [23], which indicate the multipath radio wave propagation environment, as shown in Fig. 3(a).…”

Section: Implementation Of Rice Channel To a Fading Emulatormentioning

confidence: 99%

Rice Channel Realization for BAN Over-The-Air Testing Using a Fading Emulator with an Arm-Swinging Dynamic Phantom

Honda

Ogawa

2015

IEICE Trans. Commun.

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This paper presents a new methodology for realizing a Rice channel in BAN Over-The-Air (OTA) testing using a fading emulator with a dynamic phantom. For the proposed apparatus to be effective, the fading emulator must be provided with an appropriate K-factor that represents the actual propagation environment indoors. Further, an implementation of the Rice channel to the proposed fading emulator in a BAN situation is presented. Thereafter, a calibration method for the fading emulator to adjust the actual K-factor of the on-body Rice channel is advanced. This calibration method is validated by analyzing the variations in the instantaneous K-factor attributed to the arm-swinging motion. Finally, an experiment is conducted for a continuous human walking motion with the fading emulator using an arm-swinging dynamic phantom. The results show that the developed fading emulator allows BAN-OTA testing to replicate the actual Rice channel propagation environment with the consideration of the dynamic characteristics of human walking motion.

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“…3. This model is improved for simulating handset adaptive and MIMO arrays with a uniform APS in azimuth [16].…”

Section: Cluster Modelmentioning

confidence: 99%

A Spatial Fading Emulator for Evaluation of MIMO Antennas in a Cluster Environment

Sakata

Yamamoto

Ogawa

et al. 2014

IEICE Trans. Commun.

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This paper presents a spatial fading emulator for evaluating handset MIMO antennas in a cluster environment. The proposed emulator is based on Clarke's model and has the ability to control RF signals directly in spatial domain to generate an accurate radio propagation channel model, which includes both uniform and non-uniform angular power spectra (APS) in the horizontal plane. Characteristics of a propagation channel such as fading correlations, eigenvalues and MIMO channel capacities of handset antennas located in the vicinity of the emulator's ring can be evaluated. The measured results show that the fading emulator with 31 antenna probes is sufficient to evaluate fading correlation and MIMO channel capacity of handset antenna in the case of a narrow APS with the standard deviation of more than 20 degrees.

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Multipath performance of handset adaptive array antennas in the vicinity of a human operator

Cited by 29 publications

References 14 publications

Minimum Cell Size for Information Capacity Increase in Cellular Wireless Network

Minimum Cell Size for Information Capacity Increase in Cellular Wireless Network

Rice Channel Realization for BAN Over-The-Air Testing Using a Fading Emulator with an Arm-Swinging Dynamic Phantom

A Spatial Fading Emulator for Evaluation of MIMO Antennas in a Cluster Environment

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