Investigation of short term statistical distributions for path amplitudes and phases in indoor environment

Kattenbach, R.; Englert, Torsten

doi:10.1109/vetec.1998.686131

Cited by 13 publications

(5 citation statements)

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“…The description in the present paper intentionally has been kept on a more general and, thus, more universal level. For the application on a certain type of channel, the distribution functions and parameters can readily be determined from appropriate measurements by the same means as already used e.g., for nondirectional indoor radio channels in [1], [11], [12]. The description has also been confined to the modeling of smallscale fading.…”

Section: Discussionmentioning

confidence: 99%

Statistical modeling of small-scale fading in directional radio channels

Kattenbach

2002

IEEE J. Select. Areas Commun.

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After a brief review of the known description of time-variant channels by means of system and correlation functions, a consistent extension of this description to directional time-variant channels is described in the present paper. This extension allows a clear distinction between time-and space-variant effects in directional mobile radio channels. The major intention of the described directional extension however is the derivation of a statistical modeling approach for small-scale fading effects in time-variant wideband directional channels, which can be regarded as a consistent extension of the well established Rayleighor Rice-fading approach for nondirectional time-variant narrowband channels. The approach, which is based on the time and aperture-variant transfer function, appears to be preferable to the frequently used statistical modeling of the time-variant angle-resolved impulse response for several reasons. The major advantage is that the approach can cope with the demand for a great number of superimposing components as the basis for statistical modeling. The correlation between adjacent values is proposed to be achieved by filtering with appropriate directional scattering functions. The description of the modeling approach, as done in the present paper, is intended to be general and universal; for the application on certain channel types statistical distribution functions and parameters to be used with the approach can readily be determined from appropriate measurements.

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Section: Discussionmentioning

confidence: 99%

Statistical modeling of small-scale fading in directional radio channels

Kattenbach

2002

IEEE J. Select. Areas Commun.

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“…Data sets that more closely follow a Ricean distribution have a smaller MSE than those that don't. It is generally accepted that a MSE of less than 0.0005 indicates a good fit Ricean distribution [16].…”

Section: Number Of Points Nmentioning

confidence: 99%

Assessment of Radio Frequency Propagation in a Naval Shipboard Environment

Estes¹

2001

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Subject Terms Document Classification unclassified Classification of SF298 unclassified Classification of Abstract unclassified Limitation of Abstract unlimited Number of Pages 130 REPORT DOCUMENTATION PAGE Form Approved OMB No. 074-0188Public reporting burden for this collection of information is estimated to average 1 hour per response, including g the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Assessment of radio frequency propagation in a naval shipboard environment AUTHOR(S)Estes, Daniel R.J. FUNDING NUMBERS PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBER SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING/MONITORING AGENCY REPORT NUMBER US Naval Academy Annapolis, MD 21402Trident Scholar project report no. (2001) SUPPLEMENTARY NOTES 12a. DISTRIBUTION/AVAILABILITY STATEMENTThis document has been approved for public release; its distribution is UNLIMITED. 12b. DISTRIBUTION CODE ABSTRACT:The Navy, in an effort to reduce costs and operate within future budgetary constraints, is planning to reduce the manning on combat ships. To support this reduction in manning, several wireless technologies are being considered, including wireless LANs and a wireless sensor system augmented by a computer-controlled log keeping system. The internal volume of a combat ship is a generally un-studied wireless environment. While a preliminary study demonstrated that radio energy can be radiated and received from compartment to compartment (room to room) within a ship, a detailed analysis of this environment has not been done. In this project, data was collected aboard decommissioned and active ships to characterize the wireless channel on combat ships and to attempt to determine the effect of bulkheads (walls) and hatches (doors) on the information path. Both narrowband and ultrawideband techniques have been used to demonstrated and measure transmissions through the shipboard environment. Each bulkhead attenuated the test signal roughly 20dB. Computer modeling of the bulkhead supported the hypothesis that the radio energy is propagating through the non-conductive structures within the bulkhead -hatch seals, for example -rather than through the steel. AbstractThe Navy, in an effort to reduce costs and operate within the budgetary constraints of the near future, is planning to reduce the manning on combat ships. To accomplish this without reducing the readiness or capability of these ships, the remaining personnel must work more efficiently. To support this required increase in efficiency, several wireless technologies are being considered, including wireless LANs and a wireless sensor system augmented by a computer-controlled log keeping system.The internal volume of a combat ship is a generally un-studied wireless environment. While a preliminary study demonstrated that radio energy can be radiated and received from compartment to compartmen...

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“…The Weibull distribution has been found empirically in [1–16] to be descriptive of the received signal's magnitude, for some wireless propagation scenarios indoor/outdoor/vehicle‐to‐vehicle/on‐body and at various frequency bands.…”

Section: Introductionmentioning

confidence: 99%

Copula – to model multi‐channel fading by correlated but arbitrary Weibull marginals, giving a closed‐form outage probability of selection‐combining reception

Huang

Wong

et al. 2015

IET Microwaves, Antennas & Propagation

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This study introduces the mathematical paradigm of 'copula' to the technical field of channel modelling. Copulabased modelling allows each sensor of its distinct set of fading parameters, and allows cross-correlation among various sensors' parameter sets. Hence, the branch statistics may be non-identical over various branches, yet cross-correlated between branches. This scenario is realistic especially for sensors of different polarisations/constructions and/or for sensors at widely separate locationsas increasingly common for wireless transceivers. Despite such versatility in modelling, this copula-based multivariate fading distribution may yet be so simple in mathematical form that the system's outage probability can be analytically derived in a closed form, free of any infinite-term summation and free of any unsolved integration.

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Investigation of short term statistical distributions for path amplitudes and phases in indoor environment

Cited by 13 publications

References 13 publications

Statistical modeling of small-scale fading in directional radio channels

Statistical modeling of small-scale fading in directional radio channels

Assessment of Radio Frequency Propagation in a Naval Shipboard Environment

Copula – to model multi‐channel fading by correlated but arbitrary Weibull marginals, giving a closed‐form outage probability of selection‐combining reception

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