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Path loss information


Path loss, or path attenuation, is the reduction in power density (attenuation) of an electromagnetic wave as it propagates through space.[1] Path loss is a major component in the analysis and design of the link budget of a telecommunication system.

This term is commonly used in wireless communications and signal propagation. Path loss may be due to many effects, such as free-space loss, refraction, diffraction, reflection, aperture-medium coupling loss, and absorption. Path loss is also influenced by terrain contours, environment (urban or rural, vegetation and foliage), propagation medium (dry or moist air), the distance between the transmitter and the receiver, and the height and location of antennas.

  1. ^ Sari, Arif; Alzubi, Ahmed (2018-01-01), Ficco, Massimo; Palmieri, Francesco (eds.), "Chapter 13 - Path Loss Algorithms for Data Resilience in Wireless Body Area Networks for Healthcare Framework", Security and Resilience in Intelligent Data-Centric Systems and Communication Networks, Intelligent Data-Centric Systems, Academic Press, p. 303, ISBN 978-0-12-811373-8, retrieved 2023-06-03

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Path loss

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Path loss, or path attenuation, is the reduction in power density (attenuation) of an electromagnetic wave as it propagates through space. Path loss is...

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Loss

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event Path loss, the attenuation undergone by an electromagnetic wave in transit from a transmitter to a receiver Free-space path loss, the loss in signal...

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Signal strength in telecommunications

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0\ \log _{10}\left({\frac {r}{R}}\right)} In general, you can take the path loss exponent into account: d B m e = − 43.0 − 10.0   γ   log 10 ⁡ ( r R )...

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Radio propagation

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propagated from one place to another, such models typically predict the path loss along a link or the effective coverage area of a transmitter. The inventor...

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Link budget

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L_{\text{TX}}} , transmitter losses (coax, connectors...) (dB) L FS {\displaystyle L_{\text{FS}}} , path loss, usually free space loss (dB) L M {\displaystyle...

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PL

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squelching of an audio signal Packet loss, one of the three main error types encountered in digital communications Path loss, in telecommunication engineering...

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Hair loss

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Hair loss, also known as alopecia or baldness, refers to a loss of hair from part of the head or body. Typically at least the head is involved. The severity...

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ITU model for indoor attenuation

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for indoor attenuation, is a radio propagation model that estimates the path loss inside a room or a closed area inside a building delimited by walls of...

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Downlink CNR

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is simply F = 10   log 10 ⁡ ( f ) {\displaystyle F=10\ \log _{10}(f)} Path loss is defined as l = ( 4 ⋅ π ⋅ d λ ) 2 {\displaystyle l=({\frac {4\cdot \pi...

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Propagation path obstruction

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propagation path obstruction is a man-made or natural physical feature that lies near enough to a radio path to cause a measurable effect on path loss, exclusive...

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Decibel

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in topics such as optical fiber communication and radio propagation path loss, are often expressed as a fraction or ratio to distance of transmission...

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Attenuation

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for natural attenuation Extinction (astronomy) ITU-R P.525 Mean free path Path loss Radar horizon Radiation length Radiography Rain fade Sunset#Colors Twinkling...

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Hata model

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The Hata model is a radio propagation model for predicting the path loss of cellular transmissions in exterior environments, valid for microwave frequencies...

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Okumura model

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{K_{\text{correction}}}\;} where, L = The median path loss. Unit: Decibel (dB) LFSL = The free space loss. Unit: decibel (dB) AMU = Median attenuation. Unit:...

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Radio frequency

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called RF burns. RF current can easily ionize air, creating a conductive path through it. This property is exploited by "high frequency" units used in...

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Shining Path

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The Shining Path (Spanish: Sendero Luminoso), officially the Communist Party of Peru (Partido Comunista del Perú, abbr. PCP), is a far-left political party...

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Gigabit Ethernet

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distances of 20, 40 and 80 km, or greater depending on module cost, fiber path loss, splices, connectors and patch panels. Very long reach BiDi optics may...

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ITU terrain model

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The ITU terrain loss model is a radio propagation model that provides a method to predict the median path loss for a telecommunication link. Developed...

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Air to ground channel

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NLOS = 1 − P LOS . {\displaystyle P_{\text{NLOS}}=1-P_{\text{LOS}}.} Path loss represents the reduction in power density of an electromagnetic wave as...

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COST Hata model

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The COST Hata model is a radio propagation model (i.e. path loss) that extends the urban Hata model (which in turn is based on the Okumura model) to cover...

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Microwave transmission

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detrimental factors mentioned in this section, collectively known as path loss, make it necessary to compute suitable power margins, in order to maintain...

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