Subnanosecond UWB channel sounding in frequency and temporal domain

Keignart, J.; Daniele, N.

doi:10.1109/uwbst.2002.1006311

Cited by 64 publications

(42 citation statements)

References 6 publications

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“…The UWB measurement results of [5] and [2] show that the PDP decreases exponentially with excess delay. The time decay constant (TDC) seems to follow a Lognormal distribution with mean of 39.8 ns and standard deviation of 1.2 dB for NLOS situations [5].…”

Section: ) Power Delay Profile (Pdp)mentioning

confidence: 98%

An overview of ultra wide band indoor channel measurements and modeling

Irahhauten

Nikookar

Janssen

2004

IEEE Microw. Wireless Compon. Lett.

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Abstract-In this letter, an overview of reported measurements and modeling of the ultra wide band (UWB) indoor wireless channel is presented. An introduction to UWB technology and UWB channels is provided. Different UWB channel sounding techniques are discussed and approaches for the modeling of the UWB channel are reviewed. The available indoor UWB channel measurement results are consulted and accordingly, the major UWB channel parameters are presented and compared to those of narrowband systems. The novelty of this work is the gathering of different UWB channel parameters, analysis, and comparison. Added with the influence of UWB antenna in channel-modeling as well as the frequency-dependency of the channel parameters, leading to a conclusion on the UWB radio channel modeling.Index Terms-Conventional narrowband and wide-band systems (CNWS), inverse Fourier transform (IFT), time decay constant (TDC), ultra wide band (UWB) indoor wireless channel.

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Section: ) Power Delay Profile (Pdp)mentioning

confidence: 98%

An overview of ultra wide band indoor channel measurements and modeling

Irahhauten

Nikookar

Janssen

2004

IEEE Microw. Wireless Compon. Lett.

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“…The average IPDP is made over a local area (a neighborhood at the moving antenna's nominal location) for spatial small-scale or over a short period of time (mostly a delay resolution bin) for temporal small-scale. As shown in (17), (21), (22), (24), (25), (28), (31), (37), (38), (52) and (57), the power delay profile is related to the excess delay as where a 2 0 denotes the first multipath's average power and γ symbolized power decay-rate. Moreover, the presented data in (17), (52) and (57) verify the double exponential decay law of (15):…”

Section: Multipath Delay Spread 521 Power Delay Profilementioning

confidence: 99%

Ultra-Wideband (UWB) Communications Channel – Theory and Measurements

Ahmadi‐Shokouh¹,

Qiu²

2011

Ultra Wideband Communications: Novel Trends - Antennas and Propagation

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“…Whereas this was useful, they do not indicate how the calibration was achieved, nor do they provide the reasons for the adopted calibration technique. Other researchers have measured certain UWB channels, however they have not explained whether a calibration process was in fact used at all (Bellens et al, 2009;Donlan et al, 2006;Katayama et al, 2006;Keignart and Daniele, 2002;Kobayashi, 2006;Nakahata et al, 2008;Nkakanou et al, 2011a;Nkakanou et al, 2011b;Bieder et al, Dec.2006;Abbasi et al, 2011;Gelabert et al, 2011;Elmansouri and Filipovic, 2011;Chen et al, 2009). …”

Section: Related Workmentioning

confidence: 99%

An approach to ultra-wideband channel calibration using a vector network analyser

Alshabo¹,

Stirling²,

Ros³

et al. 2014

AJEEE

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approach to ultra-wideband channel calibration using a vector network analyser," Australian Journal of Electrical and Electronics Engineering, vol. 11, (4) pp. 347-356, 2014. An approach to ultra-wideband channel calibration using a vector network analyser AbstractIn this paper, two calibration methods are investigated to determine the most suitable approach for ultrawideband (UWB) communication channel measurements. The fi rst method is the through, open, short and match (TOSM) calibration technique. The second method is through, refl ection and load calibration technique. Presented experiment results show that the through, refl ection and load calibration process is more precise for calibration of coaxial cables and the UWB channel as clearly seen by increased magnitudes of the channel transfer function. It is also shown that the proposed through, refl ection and load technique leads to an improved larger measured root-mean-square value and that the measured magnitude transfer function of the wireless channel is increased by an absolute value of approximately 5 dB after calibration compared with results achieved when TOSM technique is used. In the paper, it is also shown that the time delay associated with test equipment of the UWB channel measurement can be equally well removed by using either the through, refl ection and load or TOSM calibration techniques. KeywordsVector network analyser, calibration kit, cables, indoor ultra-wideband channels Presented experiment results show that the TRL calibration process is more precise for calibration of coaxial cables and the UWB channel as clearly seen by increased magnitudes of the channel transfer function. It is also shown that the proposed TRL technique leads to an improved larger measured RMS value and that the measured magnitude transfer function of the wireless channel is increased by an absolute value of approximately 5 dB after calibration compared with results achieved when TOSM technique is used. In the paper, it is also shown that the time delay associated with test equipment of the UWB channel measurement can be equally well removed by using either the TRL or TOSM calibration techniques.

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Subnanosecond UWB channel sounding in frequency and temporal domain

Cited by 64 publications

References 6 publications

An overview of ultra wide band indoor channel measurements and modeling

An overview of ultra wide band indoor channel measurements and modeling

Ultra-Wideband (UWB) Communications Channel – Theory and Measurements

An approach to ultra-wideband channel calibration using a vector network analyser

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