The dependence of indoor radio channel multipath characteristics of transmit/receiver ranges

Bultitude, R.J.C.; Melancon, P.; Zaghloul, H.; Morrison, G.C.; Prokki, M.

doi:10.1109/49.233211

Cited by 48 publications

(13 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We conjecture that this behavior may be due to the used rms delay spread estimators. The measurements and results from ray-tracing simulations reported in [18], [19] agree with (20). In summary, the model (2)- (4) of the delay power spectrum induces secondary models for the path gain, mean delay and rms delay spread etc.…”

Section: F Relation To Other Models and Measurementssupporting

confidence: 78%

“…We observe a good agreement between predicted values and estimates of the mean delay together with a predictable distance dependency, which is critical for localization purposes. The predicted and estimated values of the root mean squared (rms) delay spread are close with a distance behavior similar to that reported in [18], [19] for small to intermediate ranges.…”

Section: Introductionsupporting

confidence: 55%

See 1 more Smart Citation

Distance Dependent Model for the Delay Power Spectrum of In-room Radio Channels

Steinböck

Pedersen

Fleury

et al. 2013

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Abstract-A model based on experimental observations of the delay power spectrum in closed rooms is proposed. The model includes the distance between the transmitter and the receiver as a parameter which makes it suitable for range based radio localization. The experimental observations motivate the proposed model of the delay power spectrum with a primary (early) component and a reverberant component (tail). The primary component is modeled as a Dirac delta function weighted according to an inverse distance power law (d −n ). The reverberant component is an exponentially decaying function with onset equal to the propagation time between transmitter and receiver. Its power decays exponentially with distance. The proposed model allows for the prediction of e.g. the path loss, mean delay, root mean squared (rms) delay spread, and kurtosis versus the distance. The model predictions are validated by measurements: they show good agreement with respect to distance dependent trends.

show abstract

Section: F Relation To Other Models and Measurementssupporting

confidence: 78%

Section: Introductionsupporting

confidence: 55%

Distance Dependent Model for the Delay Power Spectrum of In-room Radio Channels

Steinböck

Pedersen

Fleury

et al. 2013

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…For the other buildings in this motionless case, we cannot categorically state that RMS-DS increases with distance for all cases, although the simplest linear fits to the measured points would indeed show positive slopes. In cellular cases, RMS-DS typically increases with distance [16], whereas in narrow confined environments such as corridors or tunnels, RMS-DS decreases with distance once beyond a distance larger than the corridor/tunnel width [17]. In the classic indoor channel work of [11], RMS-DS was found to be generally not correlated with distance in the indoor environment with transmitter and receiver located in the same floor without LOS.…”

Section: Rms Delay Spreadmentioning

confidence: 96%

Characterization of the 5-GHz Elevator Shaft Channel

Sun

Matolak

2013

IEEE Trans. Wireless Commun.

View full text Add to dashboard Cite

Abstract-In this paper we provide channel characterization results for the elevator shaft channel in the 5-GHz band, based upon measurements conducted in four buildings. This channel is of interest for several applications, including WiFi and public safety. Although several authors have provided elevator shaft channel characteristics for lower-frequency bands (255-MHz, 900-MHz, 1.9-GHz), to our knowledge this is the first work that addresses the 5-GHz band. Moreover, prior work has not thoroughly addressed channel characteristics when the elevator car is in motion, whereas here we provide measurement and modeling results for this dynamic condition. Our measurements were of power delay profiles, from which we estimated propagation path loss and root-mean square delay spread (RMS-DS). Path loss exponents were approximately 2.5 in one building and 5.5 in the other three buildings, with standard deviations about the log-distance linear fits equal to approximately 3 dB and 5.5 dB, respectively. Mean RMS-DS values range from approximately 14-60 ns when the elevator car is motionless. Maximum RMS-DS values were 144 ns and 152 ns in the two different types of buildings when the elevator car is moving. The significant differences in these channel characteristics among the four buildings are likely attributable to the distinct physical features of the buildings.Index Terms-Path loss, RMS delay spread, tapped delay line.

show abstract

“…A three-term Blackman-Harris window was applied to the CFR to reduce the temporal sidelobes introduced by the rectangular frequency window [21]. The CFRs at a given look angle ( , ), which are the complex channel amplitudes in the discrete frequency domain, were inverse Fourier transformed to yield the CIR in the time domain for that AoA.…”

Section: Data Post-processingmentioning

confidence: 99%

Characterization of the Angle, Delay and Polarization of Multipath Signals for Indoor Environments

Gurrieri

Willink

Petosa

et al. 2008

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Abstract-A high-resolution channel sounding technique has been used to investigate the cross-polarization of electromagnetic waves in the 5-6 GHz band. Experiments were performed in two non-line-of-sight indoor locations, and it was found that there is a strong dependency of the cross-polarization of multipath components on the elevation angle-of-arrival. For a vertically polarized transmitting antenna, clusters of co-polarized multipath components were confined predominantly to the region around the horizontal plane that contains the virtual line-of-sight between transmitter and receiver. In contrast, cross-polarized signals were detected for a variety of elevation angles with considerable power levels. The surroundings of the receiver were identified as the principal source of depolarized signals. In addition, time dispersion analysis of the multipath signals led to the determination of the AoAs where there is a strong correspondence between co-and cross-polarized signals as a consequence of the partial depolarization of MPCs. This work supports the exploitation of the joint space and polarization diversities in indoor propagation scenarios to improve the system performance.

show abstract

The dependence of indoor radio channel multipath characteristics of transmit/receiver ranges

Cited by 48 publications

References 17 publications

Distance Dependent Model for the Delay Power Spectrum of In-room Radio Channels

Distance Dependent Model for the Delay Power Spectrum of In-room Radio Channels

Characterization of the 5-GHz Elevator Shaft Channel

Characterization of the Angle, Delay and Polarization of Multipath Signals for Indoor Environments

Contact Info

Product

Resources

About