Analyzing 60 GHz radio links for indoor communications

Wang, Jing; Prasad, R. Venkatesha; Niemegeers, Ignas

doi:10.1109/tce.2009.5373739

Cited by 17 publications

(8 citation statements)

References 21 publications

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“…The received power under the presence of human activity between the transmitting and receiving antennas is given by [7] ( ) ( ) Pt in a dB scale follows a Gaussian distribution within the time intervals of similar shadowing processes, i.e. when shadowing arises from the same effect, for example, realistic mobility of two people as in the first category, or static bodies between the antennas as in the second category.…”

Section: Statistical Analysis and Resultsmentioning

confidence: 99%

“…In [6], it was shown that the whole ensemble of power levels when human shadowing occurs cannot be modeled by a Gaussian distribution. In [7], the shadowing spatial variations were separated from the shadowing temporal variations due to human activity. In [8], it was considered that human activity influences the first and second order reflections, whereas the LOS path remained unobstructed.…”

mentioning

confidence: 99%

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Human Body Shadowing Characterization for 60-GHz Indoor Short-Range Wireless Links

Karadimas

Allen

Smith

2013

Antennas Wirel. Propag. Lett.

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60GHz short-range wireless transmissions are susceptible to shadowing loss due to the inherent human activity obstructing the line-of-sight (LOS) path [4]- [8]. Shadowing loss is further influenced because of the utilization of directional antennas to overcome the increased path loss and effects of multipath propagation that are present at these frequencies [9]. It is wellknown that spatial shadowing variations in dB scale are modeled by a Gaussian distribution [10], [11]. However, there is not a rigorous statistical description in the published literature for the temporal variability of shadowing of LOS paths due to human activity. This seems surprising due to the significant impact human body shadowing has on 60GHz wireless links. Very recent advances based on measurements and simulations revealed that knowledge of human body shadowing is essential to estimate the performance [12] and

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Section: Statistical Analysis and Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Human Body Shadowing Characterization for 60-GHz Indoor Short-Range Wireless Links

Karadimas

Allen

Smith

2013

Antennas Wirel. Propag. Lett.

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“…The diffraction gain follows an overshoot-type function (with theoretical positive gain) for Fresnel diffraction parameters below v ¼ 20.75 (simplified to 0 dB) and the gain decreases at approximately 25 dB per decade and reaches its asymptote at 228 dB for v . 5 [1]. The Fresnel diffraction parameter as a function of attenuation can be simulated by an LPF structure as proposed; however, dependent on the maximum variable attenuation attainable of the filter structure.…”

Section: A) Mm-wave Path Lossesmentioning

confidence: 99%

“…The four largest contributing mechanisms that account for losses in electromagnetic (EM) signal propagation are frequency-dependent free-space losses, reflection, diffraction, and scattering. In the millimeter-wave (mm-wave) frequency band near 60 GHz, mechanisms such as oxygen absorption and rain-rate attenuation become significant contributors to the overall losses and must be prioritized to estimate the coverage area of transmitted radio signals [1]. This paper analyzes the expected EM signal attenuation over a short distance (<30 m) as a function of free-space losses, oxygen absorption, reflection, and diffraction losses, as well as rain-rate attenuation with climate conditions specific to South Africa, but presented as a general model.…”

Section: Introductionmentioning

confidence: 99%

Estimation of signal attenuation in the 60 GHZ band with an analog BiCMOS passive filter

Lambrechts

Sinha

2014

Int. J. Microw. Wireless Technol.

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Prediction of millimeter(mm)-wave radio signals can be beneficial in recreating and repeating atmospheric conditions in a controlled, laboratory environment. A path-loss model has been proposed that accounts for free-space losses, oxygen absorption, reflection and diffraction losses, and rain-rate attenuation at mm-wave frequencies. Two variable passive low-pass-integrated circuit filter structures for attenuation in the 57–64 GHz unlicensed frequency band have been proposed, designed, simulated, prototyped in a 130-nm SiGe bipolar complementary metal-oxide semiconductor process, and measured. The filters are based on the Butterworth and Chebyshev low-pass filter topologies and investigate the possibility of using the structures to perform amplitude attenuation of mm-wave frequencies over a short distance. Both filters are designed and matched for direct coupling with equivalent circuit models of dipole antennas operating in this frequency band. Full integration therefore allows prediction of atmospheric losses on an analog, real-time, basis without the requirement of down-converting (sampling) to analyze high-frequency signals through a digital architecture. On-wafer probe measurements were performed to limit parasitic interference from bonding wires and enclosed packaging.

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“…Both the telecommunications industry and academia are aware of the anticipated spectrum crunch and started taking actions. One possible solution is increasing the carrier frequency to the industrial, scientific and medical (ISM) radio band centered at 61.25 gigahertz (GHz), not just for small cell networks [7], [8], but for beyond 4G (B4G) mobile systems too [9]. Duly, through Resolution COM6/20, World Radiocommunication Conference 2015 (WRC-15) also determined to invite ITU-R to conduct studies on the spectrum needs of International Mobile Telecommunications (IMT) in the frequency range between 24.25 and 86 GHz, and WRC-19 to consider additional primary service spectrum allocations for mobile communications.…”

Section: Introductionmentioning

confidence: 99%

State-of-the-art and research challenges for consumer wireless communications at 60 GHz

Yilmaz

Akan

2016

IEEE Trans. Consumer Electron.

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The demand on performance of wireless networks is constantly increasing. To date, conventional sub 6 gigahertz (GHz) bands were able to keep up with the requirements through continuous spectral efficiency improvements. Consequently, advancing this area further became exceptionally costly. Therefore, despite the industry resistance towards changing the already established communications spectrum and unavailability of sufficient number of suitable frequency bands for typical communication purposes, carrier frequency, hence operation bandwidth, increase method is chosen as an alternative. In this paper, the first spectrum chosen for utilization, the 60 GHz band, is surveyed. Detailed explanations of the standards and their processes are provided, in addition to the characteristics of the channel and 60 GHz technologies, devices and consumer applications. As its initial standards are already complete and widespread communications usage expected to start in 2016, the 60 GHz band is a genuine candidate for the next generation of mass market wireless communication systems 1 .

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Analyzing 60 GHz radio links for indoor communications

Cited by 17 publications

References 21 publications

Human Body Shadowing Characterization for 60-GHz Indoor Short-Range Wireless Links

Human Body Shadowing Characterization for 60-GHz Indoor Short-Range Wireless Links

Estimation of signal attenuation in the 60 GHZ band with an analog BiCMOS passive filter

State-of-the-art and research challenges for consumer wireless communications at 60 GHz

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